New Circuits Page 137
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The following circuit shows about LEGO Light Sensor Circuit Diagram. This circuit based on the LM358IC. Features: dual opamp,high speed double ....
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The schematic shows these a regular light bulbs, so there is the chance that the bulbs are burned out. I don`t know at this point if the bulbcan be easily replaced. I did some more checking and it does look like the bulbs in the HVAC control can be replaced,....
-
-
All Things Pros covers a variety of patent prosecution topics. Here you will find prosecution strategies for handling 102, 103, 101 and 112 rejections, often discussed in the context of BPAI decisions. You`ll also find procedural topics from the MPEP such as....
-
-
UTC7642 is suitable for low voltage portable Radio cassette system and other Wireless AM system. The package of UTC7642 is TO-92. By LianShun Electronics Co. , Ltd ..
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-
The amplifier has exactly the same architecture as TX500 with the difference that TX300 has only one stage variable VHF amplifier. It is a cute schematic that was made for all of you who wanted something even simpler than TX500 and with not as many necessary....
-
This circuit was designed to detect the approximate percentage of salt contained in a liquid. After careful setting it can be useful to persons needing a quick, rough indication of the salt content in liquid foods for diet purposes etc. IC1A op-amp is wired....
-
This is the circuit diagram of lamp flasher operated from mains. By this you can flash up to 200 Watt lamps at rates determined by you. IC NE555 is wired as an astable multivibrator for producing the pulses for flashing the lamp. The flashing rate can be set....
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6DJ8 / ECC88 Symmetrical SRPP Tube Preamplifier Schematic. Gain of the preamp is 27 dB (about 23.5 times)...
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If you have plane to use this Circuit on 110V 60Hz instead of 230V, 50Hz, or want to modify this circuit, Then See the Section " Common Question about this Circuit" below the "instruction". Also Note that here is two circuit diagrams, so the first one is....
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-
The SDR hardware in its simplest form consists of a wideband switched balanced mixer and low noise LF amplifier. This simple hardware has an amazing sensitivity and linearity which is sufficient for test and even regular use. Here are some of the problems in....
-
Direct-reading" SWR meters that automatically compute the ratio of Forward and Reverse powers (i. e. you don`t have to adjust any sensitivity controls). Several years ago I built one to a design by G3WPO that was sold as a kit by Cirkit. It worked quite....
-
With the wide application of Flash technology on the microprocessor, make the one-chip computer have revolutionary changes in developing and employing the means, from the traditional simulator ICE Popular JTAG up till now, designers are looking for lower....
-
High voltage resistors for HV divider are SFERNICE or PHILIPS type VR37 (3. 5 kV - 0. 4 W). They are NOT expansive (even if they are sold by 25 or 50 units) and it is always useful to have some in junkbox if you want to make high voltage divider for other....
-
A Burrough`s B-7971 Nixie Tube clock that I built back in 1979 when I was a senior in High School. The digits are 2 ½ inches high which allowed me to read the clock from anywhere in my bedroom without needing to wear my glasses. The clock circuit is based on....
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-
ZXLD1100 is a PFM flyback DC to DC boost converter that work in discontinuos mode. The following circuit diagram show you about setting 4 LED Driver for Handset LCD Backlight using this device. The ZXLD1100 designed for driving 2,3,4 series connected white....
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Here is another example of using a CD4051 multiplexer, or more accurately a pair of CD4051s in parallel. I had lifted much of the core logic and circuits from Dave Jones designs. Again these are old designs offered from a historical perspective. I built this....
-
-
This circuit shows how far integration can be taken: IC1, a Type HT82207 from Holtek does virtually everything. Only a (small) loudspeaker and the necessary selectors need to be added. The standard 18-pin Type HT82207 is an integrated sound generator,....
-
A high voltage power supply 3V to 500V DC converter and someone suggested a circuit from techlib H. V. generator for Geiger tubes : However, when I tried to simulate it didn`t work, the output is nearly 9V, as the input. In the schematic I drew, the only....
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Above diagram is a very easy and efficient receiver for actuating garage doors, starter motors, alarms, warning systems and many some other possibilities. The SCR, which has a extremely low trigger current of 30 uA is typical - it demands an input....
-
There are not many AM transmitters that are easier to build than this one because the inductor is not tapped and has a single winding. There is no need to wind the inductor as it is a readily available RF choke (eg, Jaycar Cat LF-1536). To make the circuit....
-
Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works....
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-
This easy to build FM transmitter bug can transmit voice to exceptionally good range. Tune trimmer to hear the signal to your near radio. Transmitter frequency range is 88-108 MHz. Max current consumption is 30mA. You can power the fm transmitter bug with a....
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A simple battery charger that disconnects the battery when charge voltage reaches its nominal voltage and reconnects when battery voltage falls below a predefined level, can be designed using this circuit diagram. A fraction of the battery voltage is taken....
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-
This mobile phone repair tutorial, only applicable if after replacing a good LCD replacement or rest assured that the LCD screen is working fine but the display problem still exists. If the LCD connector is seemingly okay and the quickest method is to....
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Digital IC, Electronic Lock Here is an electronic code lock, which can be used as a door latch or key for ignition, etc. Operation is fairly tricky and there lies the beauty of the ci....
-
Voltage driving type pulse width modulator 1. feature and function of TL494 TL494 is produced by the United States IR company. It is voltage driving type pulse width modulator, which can be used as switching power circuit in display, computer and other....
-
The aboriginal accessory forms a archetypal oscillator ambit whose achievement is both a triangle waveform arresting and a aboveboard beachcomber signal. The triangle arresting is baffled to a accepted regulator circuit, which converts the triangle voltage....
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The circuit featured here is very useful to save you from burning your tongue. The coffee thermometer is composed of a voltage regulator, a temperature to voltage converter, a comparator and two LEDs. Roughly described, the circuit works this way: if the....
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LM317HV adjustable regulator is capable of supplying in excess of 1. 5A over a 1. 2V to 57V output range. The design of these high current power supply is very easy, because the LM317HV require just few external resistors to set the output voltage. Further,....
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A simple digital thermometer circuit with out a micro controller and having a seven segment LED read out is shown here. The circuit is based on three ICs: CA3162, CA3161 and LM35. CA3162 is a monolithic analogue to digital (A/D) converter that has BCD....
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The series is a series of input buffer equal to the output. In this is such a common collector circuit of air-reinforcement = 1. R value attached to restrict the current use is issued. Great value depends on the indication of its components, is usually not....
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-
Tracks the history of voltage-controlled oscillators (VCOs) since approximately 1910. Provides examples of VCO integration in RF ICs....
-
-
This automatic NiCd charger for 9V NiCd batteries is using 555 timer properties and is very easy to build. Why is an automatic 9 volts NiCd battery charger? Because you can leave the battery for charging as much as you like: it will be always completely....
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This flashing light circuit uses triacs to generate an intermittent light with variable frequency. Additional components are the D1 diode and semi adjustab....
-
A very simple circuit forexperiments with AT90S2313, 2x16 LCD display and 4x4 keypad. The clock is based on 4 MHz crystal, but you can use any other crystalbetween 1-4 MHz. The keys with the name "A", "B". "F" are typed to the LCD with numbers 10-16. Because....
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This simple Mock Flasher LED simulates the indicator of a sophisticated Alarm system. It can be placed in doors, gates and vehicles to confuse intruders. T....
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Sometimes you need a low voltage power supply of very high currents (hundreds of amperes) - whether for spot welding, heating or melting metals, starting the vehicle engine, or other physical experiments. Such a supply I have now decided to build. Given that....
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A stroboscope is an instrument which is used to view the object which is moving rapidly with a periodic motion as if they are at rest. The strobe light flashes at a frequency that synchronizes with the resolution of a wheel or moving object which seems to be....
-
-
This is a simple Electronic thermometer circuit. This is a inexpensive circuit because probe or sensor that is used in this circuit is 2N2222 silicon ...
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-
-
This inverter can deliver high-voltage ac or dc, with a rectifier and filter, up to several hundred volts. The secondary and primary of T1-a 12. 6 to 440 V power transformer, respectively-are reversed; e. g. , the primary becomes the secondary and the....
-
Software such as that available on PGM-Fi. org and from Hondata make use of the Honda ECU`s oxygen sensor input to allow real time display and data logging of wideband oxygen sensors. This involves feeding the analogue output of the wideband sensor`s....
-
-
This is a 1 watt fm amplifier with a good design that can be used to amplify a rf signal in the 88 - 108 MHz band. It is very sensitive if you use good rf....
-
-
The PCB for this amplifier can be purchased from Spare Time Gizmos for $16US. In a single afternoon you can have the whole board assembled and dropped into a chassis of your choice. The value and type of component is laid-out in the parts list. But what I....
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This little circuit can assist you to get rid of all surplus tiny ac mains adaptors from your desktop. The circuit is nothing, however a sensible dc power box directly powered by the smps of your desktop pc. Regulated, clean and guarded +12VDC is offered at....
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This subwoofer filter set Suitable for use with a great car audio system. Since this circuit is designed to operate with a 12 volt DC power. But if you....
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It relies on the smoke that is produced in the event of a fire and passes between a bulb and an LDR, the amount of light falling on the LDR decreases. This type of circuit is called optical smoke detector. Do not use it as a home smoke detector it`s jus for....
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Hello world!, The more you understand about any subject, the more interesting it becomes. As you read this article you`ll find that the subject of....
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Interfacing with a HD44780 compatible display using some DIP switches and a few other components. The module that we are using is a 16 character x 2 line display that we stock over here. It uses an ST7065C controller, which is HD44780 compatible. The figure....
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ISL83202IPZ is a sub package of ISL83202, If you need see the description, please click ISL83202. If you need ISL83202IPZ`s datasheet, please download it from below. By Intersil Corporation ..
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Brand N-Ch VFET P/N: 2SJ28 from Sony for TA-N88 Class D Amplifier, great variety of active, discrete, passive components, RF, Obsolete Components available at factory price....
-
-
Capacitive touch sensors are based on the electrical capacitance of the human body. When, for example, a finger comes close to the sensor, it creates a capacitance to Earth with a value of 30 to 100 pF. This effect can be used for proximity detection and....
-
Designs for audio amplifiers with DC coupling to the load are not often encountered these days, even though they offer definite advantages. One advantage....
-
-
The circuit consists of ICM7208 seven-decade counter U1, ICM7207A oscillator controller U2, and CA3130 biFET op amp U3. IC UI counts input signals, decodes them to 7-segment format, and outputs signals that are used to drive a 7-digit display. IC U2 provides....
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The post discuses how to modify an ordinary square wave inverter using IC 4047 into a modified sine wave inverter through PWM technology. The idea was requested by Mr. Philip I am a Nigerian living in Nigeria and I have been an avid follower of your blog and....
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This is a very basic tutorial for atmega32 microcontroller beginners to get started. You can call this little program as Hello World for atmega...
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Georgia Republic inventor, Tariel Kapaladze, claims to have invented a 5 kilowatt free energy generator. In a demonstration video, the device appears to produce copious amounts of energy from no visible source. Though it appears to be extracting energy from....
-
This design resulted from the need for a partial replacement of the well-known 8038 chip, which is no longer in production and there fore hardly obtainable. An existing design for driving an LVDT sensor (Linear Variable Differential Transformer), where the....
-
The ISL62391 controller generates supply voltage for battery-powered systems. It includes two pulse-width modulation (PWM) controllers, adjustable from 0. 6V to 5. 5V, and a linear regulator (LDO3) that generates a fixed 3. 3V and can deliver up to 100mA.....
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You can save on your electricity bills by switching to alternative sources of power. The photovoltaic module or solar panel described here is capable of delivering a power of 5 watts. At full sunlight, the solar panel outputs 16.5V. It can deliver a current....
-
This Hi Fi stereo preamplifier circuit is congenital with TDA1054 IC from SGS. TDA1054 is a 16-pin DIL amalgamation and integrates 2 abstracted preamp circuits. It is a low babble preamp with little or no botheration in the building process. The aboriginal....
-
Voltage controlled oscillator (VCO) is similar to a voltage to frequency converter (VFC), an oscillator which its output frequency is determined by a control voltage input. This is the figure of the circuit; Where d is the amplifier input voltage = 0. 6V,....
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This circuit features an intermittent siren output and automatic reset. It can be operated manually using a key-switch or a hidden switch; but it can also be wired to set itself automatically when you turn-off the ignition. By adding external relays you can....
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Network with Cadence technologists and peers in the Cadence Community. Stay abreast of technology trends, news and opinion through Blogs, forums, and social networking....
-
It uses a 6GW8 triode-pentode in an oscillator-amplifier design that combines a curious misapplication of oscillator fundamentals with insufficient attention paid to issues of amplifier stability. The result is a transmitter that shouldnot be duplicated and....
-
-
I n this circuit, the alarm will be switched on under the following four different conditions: 1. When light falls on LDR1 (at the entry to the premises). 2. When light falling on LDR2 is obstructed. 3. When door switches are opened or a wire is broken. 4.....
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This circuit uses an LM2917 frequency to voltage converter. The input was connected to the low voltage side of the ignition coil, and the various components around it design to produce a full scale output at 6000rpm, which corresponds to 12000 ignition....
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Using this electronic schematic, can be designed a very simple cellular phone detector circuit which can sense the presence of an activated mobile cell phone from a distance of one and-a-half meters. The C3 capacitor must have leads length of 18 mm with 8 mm....
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The first part of the circuit here is a preamplifier consisting of transistor Q1(2N2222). The collector of the Q3 is coupled to the base of Q2 (2N2905A), which forms a complementary symmetry pair with Q3 (2N3053). The amplified signal is available at the....
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This circuit shows the use of the XCSB servo library to control 4 RC servos. The demo runs on a 16f628 using the internal 4MHz oscilator. It uses 1 push button to select between servos and 2 push buttons to change the selected servos position. A 16x2....
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This is a complete Arduino Uno-compatible standalone system, and will be fully assembled, tested, and programmed before shipping. You may choose one of several TC4 applications to be pre-programmed into the board. If you would like to use the TC4 system, but....
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In motor control circuits, one must take precautions to keep the motor from feeding back into the power supply, causing the supply voltage to rise, consequently breaking things. But how can this be Unless some external force is accelerating the motor, the....
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This circuit can be useful to detect if the load of any battery charger or plug-in adapter supply is not properly connected. The load can be a set of batteries to be charged or any other type of battery or low dc voltage operated device. The circuit can....
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This page is browser friendly, by the way. Make your browser`s window less wide than your whole screen and you will find the narrower columns much easier to read. The page is in two parts. At the top, there`s a very basic program, showing you the RFID reader....
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Those of you who imagine that a robot voice generator box would require a whole heap of ICs are mistaken; the ISD2500 ChipCorder family of ICs from Winbond...
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We wrote about a phone bug in a previous post. Here`s an app note about a circuit for detecting and locating radio frequency transmitters. This design idea showcases a circuit that detects RF ""bugs,"" such as hidden wireless cameras, eavesdropping....
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This simple FM (frequency modulation) transmitter is powered only by a 1. 5V battery and uses only one frequency of this transmitter transistor. The is controlled by the LC resonant circuit and operates from 80 to 110 MHz The inductor L1 is 8 turns of wire....
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Two-Tone Siren Circuit Schematic Using One IC Circuit This circuit is intended for children fun, and can be installed on bicycles, battery powered cars and motorcycles, but also on models and various games and toys. With SW1 pos....
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Field strength meter is a must have equipment if you`re dealing with radio transmitter electronics. Here is one example of this kind of circuit that works for...
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After soldering in the components highlighted in the circuit diagram, it is time for a quick check. I used 3 volts from a couple of AA cells for this....
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The lighting source (i. e. bulb, tube light) glow according to their specified watt rating. If we need more light then we have to use high watt bulb at the same place if we need low light we have to replace high watt bulb with low rating. But What if there....
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The following circuit shows about LEGO Light Sensor Circuit Diagram. This circuit based on the LM358IC. Features: dual opamp,high speed double ....
The schematic shows these a regular light bulbs, so there is the chance that the bulbs are burned out. I don`t know at this point if the bulbcan be easily replaced. I did some more checking and it does look like the bulbs in the HVAC control can be replaced,....
All Things Pros covers a variety of patent prosecution topics. Here you will find prosecution strategies for handling 102, 103, 101 and 112 rejections, often discussed in the context of BPAI decisions. You`ll also find procedural topics from the MPEP such as....
UTC7642 is suitable for low voltage portable Radio cassette system and other Wireless AM system. The package of UTC7642 is TO-92. By LianShun Electronics Co. , Ltd ..
The amplifier has exactly the same architecture as TX500 with the difference that TX300 has only one stage variable VHF amplifier. It is a cute schematic that was made for all of you who wanted something even simpler than TX500 and with not as many necessary....
This circuit was designed to detect the approximate percentage of salt contained in a liquid. After careful setting it can be useful to persons needing a quick, rough indication of the salt content in liquid foods for diet purposes etc. IC1A op-amp is wired....
This is the circuit diagram of lamp flasher operated from mains. By this you can flash up to 200 Watt lamps at rates determined by you. IC NE555 is wired as an astable multivibrator for producing the pulses for flashing the lamp. The flashing rate can be set....
6DJ8 / ECC88 Symmetrical SRPP Tube Preamplifier Schematic. Gain of the preamp is 27 dB (about 23.5 times)...
If you have plane to use this Circuit on 110V 60Hz instead of 230V, 50Hz, or want to modify this circuit, Then See the Section " Common Question about this Circuit" below the "instruction". Also Note that here is two circuit diagrams, so the first one is....
The SDR hardware in its simplest form consists of a wideband switched balanced mixer and low noise LF amplifier. This simple hardware has an amazing sensitivity and linearity which is sufficient for test and even regular use. Here are some of the problems in....
Direct-reading" SWR meters that automatically compute the ratio of Forward and Reverse powers (i. e. you don`t have to adjust any sensitivity controls). Several years ago I built one to a design by G3WPO that was sold as a kit by Cirkit. It worked quite....
With the wide application of Flash technology on the microprocessor, make the one-chip computer have revolutionary changes in developing and employing the means, from the traditional simulator ICE Popular JTAG up till now, designers are looking for lower....
High voltage resistors for HV divider are SFERNICE or PHILIPS type VR37 (3. 5 kV - 0. 4 W). They are NOT expansive (even if they are sold by 25 or 50 units) and it is always useful to have some in junkbox if you want to make high voltage divider for other....
A Burrough`s B-7971 Nixie Tube clock that I built back in 1979 when I was a senior in High School. The digits are 2 ½ inches high which allowed me to read the clock from anywhere in my bedroom without needing to wear my glasses. The clock circuit is based on....
ZXLD1100 is a PFM flyback DC to DC boost converter that work in discontinuos mode. The following circuit diagram show you about setting 4 LED Driver for Handset LCD Backlight using this device. The ZXLD1100 designed for driving 2,3,4 series connected white....
Here is another example of using a CD4051 multiplexer, or more accurately a pair of CD4051s in parallel. I had lifted much of the core logic and circuits from Dave Jones designs. Again these are old designs offered from a historical perspective. I built this....
This circuit shows how far integration can be taken: IC1, a Type HT82207 from Holtek does virtually everything. Only a (small) loudspeaker and the necessary selectors need to be added. The standard 18-pin Type HT82207 is an integrated sound generator,....
A high voltage power supply 3V to 500V DC converter and someone suggested a circuit from techlib H. V. generator for Geiger tubes : However, when I tried to simulate it didn`t work, the output is nearly 9V, as the input. In the schematic I drew, the only....
Above diagram is a very easy and efficient receiver for actuating garage doors, starter motors, alarms, warning systems and many some other possibilities. The SCR, which has a extremely low trigger current of 30 uA is typical - it demands an input....
There are not many AM transmitters that are easier to build than this one because the inductor is not tapped and has a single winding. There is no need to wind the inductor as it is a readily available RF choke (eg, Jaycar Cat LF-1536). To make the circuit....
Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works....
This easy to build FM transmitter bug can transmit voice to exceptionally good range. Tune trimmer to hear the signal to your near radio. Transmitter frequency range is 88-108 MHz. Max current consumption is 30mA. You can power the fm transmitter bug with a....
A simple battery charger that disconnects the battery when charge voltage reaches its nominal voltage and reconnects when battery voltage falls below a predefined level, can be designed using this circuit diagram. A fraction of the battery voltage is taken....
This mobile phone repair tutorial, only applicable if after replacing a good LCD replacement or rest assured that the LCD screen is working fine but the display problem still exists. If the LCD connector is seemingly okay and the quickest method is to....
Digital IC, Electronic Lock Here is an electronic code lock, which can be used as a door latch or key for ignition, etc. Operation is fairly tricky and there lies the beauty of the ci....
Voltage driving type pulse width modulator 1. feature and function of TL494 TL494 is produced by the United States IR company. It is voltage driving type pulse width modulator, which can be used as switching power circuit in display, computer and other....
The aboriginal accessory forms a archetypal oscillator ambit whose achievement is both a triangle waveform arresting and a aboveboard beachcomber signal. The triangle arresting is baffled to a accepted regulator circuit, which converts the triangle voltage....
The circuit featured here is very useful to save you from burning your tongue. The coffee thermometer is composed of a voltage regulator, a temperature to voltage converter, a comparator and two LEDs. Roughly described, the circuit works this way: if the....
LM317HV adjustable regulator is capable of supplying in excess of 1. 5A over a 1. 2V to 57V output range. The design of these high current power supply is very easy, because the LM317HV require just few external resistors to set the output voltage. Further,....
A simple digital thermometer circuit with out a micro controller and having a seven segment LED read out is shown here. The circuit is based on three ICs: CA3162, CA3161 and LM35. CA3162 is a monolithic analogue to digital (A/D) converter that has BCD....
The series is a series of input buffer equal to the output. In this is such a common collector circuit of air-reinforcement = 1. R value attached to restrict the current use is issued. Great value depends on the indication of its components, is usually not....
Tracks the history of voltage-controlled oscillators (VCOs) since approximately 1910. Provides examples of VCO integration in RF ICs....
This automatic NiCd charger for 9V NiCd batteries is using 555 timer properties and is very easy to build. Why is an automatic 9 volts NiCd battery charger? Because you can leave the battery for charging as much as you like: it will be always completely....
This flashing light circuit uses triacs to generate an intermittent light with variable frequency. Additional components are the D1 diode and semi adjustab....
A very simple circuit forexperiments with AT90S2313, 2x16 LCD display and 4x4 keypad. The clock is based on 4 MHz crystal, but you can use any other crystalbetween 1-4 MHz. The keys with the name "A", "B". "F" are typed to the LCD with numbers 10-16. Because....
This simple Mock Flasher LED simulates the indicator of a sophisticated Alarm system. It can be placed in doors, gates and vehicles to confuse intruders. T....
Sometimes you need a low voltage power supply of very high currents (hundreds of amperes) - whether for spot welding, heating or melting metals, starting the vehicle engine, or other physical experiments. Such a supply I have now decided to build. Given that....
A stroboscope is an instrument which is used to view the object which is moving rapidly with a periodic motion as if they are at rest. The strobe light flashes at a frequency that synchronizes with the resolution of a wheel or moving object which seems to be....
This is a simple Electronic thermometer circuit. This is a inexpensive circuit because probe or sensor that is used in this circuit is 2N2222 silicon ...
This inverter can deliver high-voltage ac or dc, with a rectifier and filter, up to several hundred volts. The secondary and primary of T1-a 12. 6 to 440 V power transformer, respectively-are reversed; e. g. , the primary becomes the secondary and the....
Software such as that available on PGM-Fi. org and from Hondata make use of the Honda ECU`s oxygen sensor input to allow real time display and data logging of wideband oxygen sensors. This involves feeding the analogue output of the wideband sensor`s....
This is a 1 watt fm amplifier with a good design that can be used to amplify a rf signal in the 88 - 108 MHz band. It is very sensitive if you use good rf....
The PCB for this amplifier can be purchased from Spare Time Gizmos for $16US. In a single afternoon you can have the whole board assembled and dropped into a chassis of your choice. The value and type of component is laid-out in the parts list. But what I....
This little circuit can assist you to get rid of all surplus tiny ac mains adaptors from your desktop. The circuit is nothing, however a sensible dc power box directly powered by the smps of your desktop pc. Regulated, clean and guarded +12VDC is offered at....
This subwoofer filter set Suitable for use with a great car audio system. Since this circuit is designed to operate with a 12 volt DC power. But if you....
It relies on the smoke that is produced in the event of a fire and passes between a bulb and an LDR, the amount of light falling on the LDR decreases. This type of circuit is called optical smoke detector. Do not use it as a home smoke detector it`s jus for....
Hello world!, The more you understand about any subject, the more interesting it becomes. As you read this article you`ll find that the subject of....
Interfacing with a HD44780 compatible display using some DIP switches and a few other components. The module that we are using is a 16 character x 2 line display that we stock over here. It uses an ST7065C controller, which is HD44780 compatible. The figure....
ISL83202IPZ is a sub package of ISL83202, If you need see the description, please click ISL83202. If you need ISL83202IPZ`s datasheet, please download it from below. By Intersil Corporation ..
Brand N-Ch VFET P/N: 2SJ28 from Sony for TA-N88 Class D Amplifier, great variety of active, discrete, passive components, RF, Obsolete Components available at factory price....
Capacitive touch sensors are based on the electrical capacitance of the human body. When, for example, a finger comes close to the sensor, it creates a capacitance to Earth with a value of 30 to 100 pF. This effect can be used for proximity detection and....
Designs for audio amplifiers with DC coupling to the load are not often encountered these days, even though they offer definite advantages. One advantage....
The circuit consists of ICM7208 seven-decade counter U1, ICM7207A oscillator controller U2, and CA3130 biFET op amp U3. IC UI counts input signals, decodes them to 7-segment format, and outputs signals that are used to drive a 7-digit display. IC U2 provides....
The post discuses how to modify an ordinary square wave inverter using IC 4047 into a modified sine wave inverter through PWM technology. The idea was requested by Mr. Philip I am a Nigerian living in Nigeria and I have been an avid follower of your blog and....
This is a very basic tutorial for atmega32 microcontroller beginners to get started. You can call this little program as Hello World for atmega...
Georgia Republic inventor, Tariel Kapaladze, claims to have invented a 5 kilowatt free energy generator. In a demonstration video, the device appears to produce copious amounts of energy from no visible source. Though it appears to be extracting energy from....
This design resulted from the need for a partial replacement of the well-known 8038 chip, which is no longer in production and there fore hardly obtainable. An existing design for driving an LVDT sensor (Linear Variable Differential Transformer), where the....
The ISL62391 controller generates supply voltage for battery-powered systems. It includes two pulse-width modulation (PWM) controllers, adjustable from 0. 6V to 5. 5V, and a linear regulator (LDO3) that generates a fixed 3. 3V and can deliver up to 100mA.....
You can save on your electricity bills by switching to alternative sources of power. The photovoltaic module or solar panel described here is capable of delivering a power of 5 watts. At full sunlight, the solar panel outputs 16.5V. It can deliver a current....
This Hi Fi stereo preamplifier circuit is congenital with TDA1054 IC from SGS. TDA1054 is a 16-pin DIL amalgamation and integrates 2 abstracted preamp circuits. It is a low babble preamp with little or no botheration in the building process. The aboriginal....
Voltage controlled oscillator (VCO) is similar to a voltage to frequency converter (VFC), an oscillator which its output frequency is determined by a control voltage input. This is the figure of the circuit; Where d is the amplifier input voltage = 0. 6V,....
This circuit features an intermittent siren output and automatic reset. It can be operated manually using a key-switch or a hidden switch; but it can also be wired to set itself automatically when you turn-off the ignition. By adding external relays you can....
Network with Cadence technologists and peers in the Cadence Community. Stay abreast of technology trends, news and opinion through Blogs, forums, and social networking....
It uses a 6GW8 triode-pentode in an oscillator-amplifier design that combines a curious misapplication of oscillator fundamentals with insufficient attention paid to issues of amplifier stability. The result is a transmitter that shouldnot be duplicated and....
I n this circuit, the alarm will be switched on under the following four different conditions: 1. When light falls on LDR1 (at the entry to the premises). 2. When light falling on LDR2 is obstructed. 3. When door switches are opened or a wire is broken. 4.....
This circuit uses an LM2917 frequency to voltage converter. The input was connected to the low voltage side of the ignition coil, and the various components around it design to produce a full scale output at 6000rpm, which corresponds to 12000 ignition....
Using this electronic schematic, can be designed a very simple cellular phone detector circuit which can sense the presence of an activated mobile cell phone from a distance of one and-a-half meters. The C3 capacitor must have leads length of 18 mm with 8 mm....
The first part of the circuit here is a preamplifier consisting of transistor Q1(2N2222). The collector of the Q3 is coupled to the base of Q2 (2N2905A), which forms a complementary symmetry pair with Q3 (2N3053). The amplified signal is available at the....
This circuit shows the use of the XCSB servo library to control 4 RC servos. The demo runs on a 16f628 using the internal 4MHz oscilator. It uses 1 push button to select between servos and 2 push buttons to change the selected servos position. A 16x2....
This is a complete Arduino Uno-compatible standalone system, and will be fully assembled, tested, and programmed before shipping. You may choose one of several TC4 applications to be pre-programmed into the board. If you would like to use the TC4 system, but....
In motor control circuits, one must take precautions to keep the motor from feeding back into the power supply, causing the supply voltage to rise, consequently breaking things. But how can this be Unless some external force is accelerating the motor, the....
This circuit can be useful to detect if the load of any battery charger or plug-in adapter supply is not properly connected. The load can be a set of batteries to be charged or any other type of battery or low dc voltage operated device. The circuit can....
This page is browser friendly, by the way. Make your browser`s window less wide than your whole screen and you will find the narrower columns much easier to read. The page is in two parts. At the top, there`s a very basic program, showing you the RFID reader....
Those of you who imagine that a robot voice generator box would require a whole heap of ICs are mistaken; the ISD2500 ChipCorder family of ICs from Winbond...
We wrote about a phone bug in a previous post. Here`s an app note about a circuit for detecting and locating radio frequency transmitters. This design idea showcases a circuit that detects RF ""bugs,"" such as hidden wireless cameras, eavesdropping....
This simple FM (frequency modulation) transmitter is powered only by a 1. 5V battery and uses only one frequency of this transmitter transistor. The is controlled by the LC resonant circuit and operates from 80 to 110 MHz The inductor L1 is 8 turns of wire....
Two-Tone Siren Circuit Schematic Using One IC Circuit This circuit is intended for children fun, and can be installed on bicycles, battery powered cars and motorcycles, but also on models and various games and toys. With SW1 pos....
Field strength meter is a must have equipment if you`re dealing with radio transmitter electronics. Here is one example of this kind of circuit that works for...
After soldering in the components highlighted in the circuit diagram, it is time for a quick check. I used 3 volts from a couple of AA cells for this....
The lighting source (i. e. bulb, tube light) glow according to their specified watt rating. If we need more light then we have to use high watt bulb at the same place if we need low light we have to replace high watt bulb with low rating. But What if there....
