Using VFC110 chip, we can build a high frequency voltage-to-frequency converter. The features of this chip include the capability of high frequency operation, disable function, and an on-board precision 5V reference. This precision reference can be used to....

The thermistor RT and R1, R2, R3 and RP1 form a temperature measurement bridge. When temperature is at 20 ?, using R1, R3 and adjusting RP1 can allow bridge to keep balance. When temperature rises, the resistance of the thermistor RT reduces, the bridge in....

The LTC4251/LTC4251-1/LTC4251-2 negative voltage Hot Swap controllers allow a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current limiting: a timed circuit breaker, active current limiting....

The Circuit is the diagram of a simple three band graphic equalizer circuit. An IC called LF 351 IC is used here...

This circuit is the opposite of Repeating Timer No.3 . Its operation can be limited to the hours of darkness. Again - the variable resistor (preset) lets you choose the level of darkness at which the timer will begin to function....

Simulation of Colpitts Oscillator circuit using npn transistor and other components available in SimElectronics is shown. The feedback ratio is determined by the relative values of the Capacitors C1 and C2. Frequency of oscillation is given by f =....

The high performance of modern set-top DBS TV tuners require broadband voltage control oscillator (VCO) designs at a competitive cost. To realize these goals, design engineers are challenged to create high performance, low-cost VCOs. The traditional design....

This is not very critical and any other device (such as tape player with message recorded on an endess tape) which does not overload the circuit or the telephone line, may be used. The incoming line is protected by metal-oxide varistor (MOV) RDN 130/14....

The overall block diagram of the system. Audio comes in at the left, and is summed, differenced, multiplied, delayed, filtered, and all other imaginable manipulations. The output is a set of 5 discrete audio channels plus one low frequency effects channel.....

I chose the Nexus 4 as these devices are traditionally very open, as you can see in case of the Nexus 4 e. g. by the availability of Ubuntu Touch images. I didn`t expect however for it to be that hackable as I was about to find out on Saturday. I had just....

Mixed Analog/Digital Design Using Split Power, Ground Planes The next example shows how to design a circuit with a mixture of analog and digital parts with multiple power planes and with a single ground plane split into analog and digital sections that have....

This is a design sensor circuit that can be used for sensing the light. This circuit is using a comparator LM311. This circuit is very simple design. This is the figure of the circuit. This comparator is powered from 12 V DC supply and does not require....

The circuit is based on the IC BA1404 from ROHM Semiconductors. BA1404 is a monolithic FM stereo modulator that has built in stereo modulator, FM modulator, RF amplifier circuitry. BA1404 FM transmitter can be operated from 76 to 108MHz and power supply for....

The following circuit shows about A Phase Controlled Triac (HT-32) Circuit Diagram. Features: Dsimple circuit, bilateral trigger diacs offers a ....

The list of best & free Android Applications for the Electronics & Electrical Engineers like simulators,resistor color code,electronic tool kits....

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A high quality stereo FM transmitter circuit is shown here. The circuit is based on the IC BA1404 from ROHM Semiconductors. BA1404 is a monolithic FM stereo modulator that has built in stereo modulator, FM modulator and RF amplifier. The FM modulator can be....

When SW1, SW2 or SW3 are open the input sensitivity is suited to high-output devices like CD players, tuners, tape recorders, iPods, miniDisc players, computer audio outputs etc. Sometimes, the 750 Ohm value for R3, R13 and R17 resistors could be not easy to....

For those who are lazy like me, turn on or off the bedroom light without getting out of bed, simple clap your hands is amazing. Thinking about it I projected one for me. Several projects of clappers can be found on the Internet, and most of them do not use....

The Sovtek 5881s that come in these amps are cheap and sound like it. Change ALL tubes. Get a Sovtek GZ34, Valve Art or GT KT66s, and Ei Gold preamp tubes. Rebias the KT66s to around 40ma at idle. Do not get Sovtek or "Golden Dragon" KT66s, as these are not....

Nowadays most of the devices are running on 3.3 volts, and likewise their communication levels also work on 3.3 volts. For example XBee runs on 3.3 volts and to interface it with microcontrollers running on 5V, one needs to translated voltages levels so that....

here is a pic running 36v 500ma on the front, 36v charging on the back. Brightness is approaching level of a 240v globe, considering its a 20 watt....

I`ve designed IFA antenna in Altium as described in DN007 and created a balun circuit from the schematic design of CC2500EM Reference Design (swrr016a). I`m very new to RF designs, as I could understand from application notes and forum posts; this design....

A project on Obstacle Avoidance & Navigation of Path Tracing Manipulator for Industrial Robots. A robot is an automatically guided machine, able to do task on its own. Another common characteristic is that by its appearance or movements, a robot often....

I took 22 used, octal, 6. 3-volt, 600mA, controlled-warm-up tubes (mostly 6SN7s) and 22 octal tube sockets and an old extension cord and wired all the sockets in series. Then I plugged the series into a wall socket and reveled in the soft glow of 22 tubes....

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Amplifier circuit is very suitable for use in subwoofer speaker, because its strong. This circuit using ic, ic based on STK. to use it can be used on cars that use speakers or a subwoofer system in his car. 30 V supply voltage that has been rectified. Power....

This circuit is the opposite of Repeating Timer No.5. It will only begin to operate if the temperature falls below the preset level. Again - the variable resistor (preset) lets you choose the temperature below which the timer will function....

Let`s construct a low-power FM transmitter using surface-mount devices (SMD) that will be received with a standard FM radio. Soldering surface mounted devices is not so hard and actually is quite easy. There are many designs for small FM transmitters but....

The HP Model 400A Vacuum Tube Voltmeter is unusually flexible because of its wide frequency and voltage ranges. AC Voltages as small as. 005 and as high as 300 volts can be simply and directly measured without any precautions over a frequency range of 10....

Detailed discussion of how to add current limit or foldback current limit to the linear regulator controllers of the MAX1864. Can be used with other discrete regulator designs such as in MAX1865, MAX1964, MAX1965, MAX8513, and MAX8514. Shows tested c....

Designed the same thing but for the reason of having a higher output voltage swing for the mono part of the signal. I personally don`t believe/understand Meier`s idea as voltages are just relative anyway aren`t they I haven`t read this entire thread but from....