Vacuum Tubes Valves
Musical & effects
Yagi Uda Antennas
Metal Detector Circuits
Liquid Sensing Circuits
Light Sensing Circuits
Voltage Detector Circuits
Air-Gas Detection Circuits
Human Sensing Circuits
RF & Radiation
Optical Sensing Circuits
Free Energy Circuits
AC to DC & DC to DC
Solar Cell Circuits
Micro Power Circuits
Switching Power Supplies
Light Laser LED
Digital to Analog
Analog to Digital
Data Bus Circuits
Voltage to Pulse
Current to Voltage
Frequency to Voltage
RF Converter Circuits
Sine to Square Wave
Voltage to Current
voltage to frequency
Period to Voltage
Video Wall circuits
TV Video Circuits
Motor Control Circuits
8051 / 8052
PCB CAD Software
Car bike Circuits
555 Timer Circuits
Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
DIY PMA alternator
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
Door circuit text display logic pen 2 CD4011
Door circuit logic pen text display can take many forms, either by the inverters can also be used with non-gates, NOR gates, etc. can also be used. A logical pen as shown by th
A digital display timer circuit diagram
Digital timers with a display clear and precise features. It is a number that represents the time after the pulse signal by decoding the digital device with digital display tub
A digital display clock signal source CD4543 CD4060 CD4518
Digital display clock signal source circuit shown in the figure is taken from a multi-point detection control box in the actual circuit. It mainly consists of automatic and man
Digital display temperature detection circuit
Digital display temperature detection circuit Precision digital display shows the temperature detection control circuit, MC1403 pin output reference voltage, the potentiometer
Massage digital display circuit
Display circuit as shown in a typical digital massager. The core of the control circuit is a microprocessor EM78156, it then received instructions manual operation of the circu
An external audio level display circuit
Condenser microphone pickup signal broken by Iq. amplified and sent as a comparator HJ of lC.., - LC.., And lC: (e - b) each of the negative side, the positive terminal of the
Digital capacitance meter
The principle of operation is counting the pulse number derived from a constant frequency oscillator during a fixed time interval produced by another lower frequency oscillator. This oscillator uses the capacitor being measured as the timing. The capacitance measurement is proportional during pulse counting during a fixed time interval. The...
Display interface uses the ICM7218A/B with an 8048 family microcontroller. The 8-bit data bus (DBO/ DB7-IDO/ID7) transfers control and data information to the 7218 display interface on successive WRITE pulses. The mode input pins on the microcontroller. When mode is high, a control word is transferred; when mode is low, data is transferred....
This matrix can show the values of two variables, for example, frequency and voltage. The display is a graph made from a matrix of LEDs. The LEDs on each axis are color coded, red for out of tolerance and green for in, fanning a red band around the inner green rectangle. The two input voltages proportional to the functions being measured are...
4511B Common-Anode Display Driver Circuit
The use of a switching transistor (like a 2N2222 or 2N3904) allows use of the CD4511B with a common-anode display. should be chosen to provide about 1 mA to drive Ql and Rr should provide enough current to drive the display.
Vacuum fluorescent display
This circuit uses the CA3207 sequence driver and CA3208 segment latch-driver in combination to drive display devices of up to 14 segments with up to 14 characters of display.
Expanded scale meter
A bar graph driver IC LM314 drives anXED display. The LEDs may be separate or in a combined (integral) bar graph display. Calibration: With a precision meter be-tvveen pins 4 and 6 adjust Rl for voltage Vq of 1 20V. Apply 4.94V to pin 5, and adjust R4 until LED No. 5 iust lights.
Keyboard - Display Interface Circuit
4X4 matrix keyboard system settings, including 0 ~ 9 numeric keys. A ~ F as function keys. The main function of the keyboard is complete parameter settings, display mode select
Brightness display circuit 555
As shown for the brightness display circuit. The circuit consists of light-sensitive sensor, an oscillation circuit, LED display circuit. Wherein the light-sensitive
Using ICL7106-ICL7107 chip liquid crystal display circuit
It shows using ICL7106 / ICL7107 chip liquid crystal display circuit. In this circuit, ICL7106 / 7107 is a signal measurement and A / D converter circuit, an analog input signal by detecting it, amplified to the digital display circuit, the result of the measurement with digital display.
Recording level display circuit
Provided only manual recording level control function, when the circuit is in the recording mode, the recording level as LM3915N was shown.
Pulse signal generating circuit and display
It shows the dynamic AC signal level display drive circuit can be used for audio level display driver.
One light emitting diode display circuit
Light-emitting diodes can be used DC, AC and pulse and other drivers, resistance typical buck LED display circuit as shown in Figure 13-1.
6 digits dynamic display circuit
Shows - typical of six dynamic display circuit. In the figure, the PA 8255 end date display output code. PB port output bit election code. Let the display buffer is DISBUF, then complete
Five sections of the spectrum display circuit
Is the use of LM324 as a band-pass filter, LB1405 for five-band spectrum display drive display circuit. Point 3 is selected frequency harmonic relationship, their center frequency is 100Hz, 330Hz, lkHz, 3.3kHz, 10kHzo band-pass filter is 0 = IO.KF = o 20 cases
Digital display circuit configuration
3 shows two kinds of digital display circuit, Total (a) adopt common anode circuit configuration, FIG. (B) the use of common cathode path structure.
6 static display circuit
6 shows the static display circuit. Figure, 74LS244 as bus drivers, six figures show a public bus, each with an LED display martyrdom latch (such as 74LS273) connected to the code for latching display data to be displayed. Data is displayed on behalf of
A typical liquid crystal display inverter circuit OZ965
A typical liquid crystal display inverter circuit (OZ965) It shows a typical liquid crystal display of the inverter circuit, which is mainly controlled by the 02965 chip, the d
LB1416 36 five sections and Ten-segment level display a
Another common single five lamp drive circuit is: LB1416/26/36, the circuit is a double row of finned-line 14 pin package. Its interior has two input amplifier and five voltage
Power phase sequence display circuit
Any power supply and distribution sector should phase sequence detection Huan Jj means to ensure stable power supply phase sequence unchanged. Any irreversible electromechanica
Flash light emitting diode display circuit
As shown by the multivibrator flashing light emitting diode display driver circuit can be used in toys in the eyes of animals or monsters double eyes flash.
External audio spectrum display circuit diagram
As shown in the external audio spectrum display circuit, high-end audio equipment are generally audio spectrum display apparatus can keep abreast of both instantaneous playback
Level led level meter display driver IC a circuit diagram
BA6104 Five-digit LED level meter level LED display driver IC circuit constituted as shown in FIG. BA6104 10 by two-dot LED level display circuit configuration shown in Figure
Run through the display circuit equipment Chengdu
Color light-emitting diodes with different colors of light can indicate the operating electrical equipment status, electrical equipment status indication line as shown in FIG.
Color display circuit
Colour in teaching, in order to allow students to understand the principle of color TV color synthesis. This circuit can be beneficial to use visual teaching, realistic reprodu
Embedded processor directly drives LCD
Driving a bare LCD does not necessarily require specialized interface circuitry or peripherals. This Design Idea describes an alternative drive scheme, which you can easily implement using the general-purpose outputs of a microcontroller. Many embedded-system applications need to interact with a user by displaying simple numeric or alphanumeric...
ALPHANUMERIC LED DISPLAY PROJECT
A tiny sandwich flag connected perpendicular to the motor spindle aids observation of how long it takes to complete one full rotation. This worked initially, as each burst from the capacitor barely moved the flag 1/4 of a rotation. As the circuit variations became more efficient and powerful (the capacitors values became larger), a single burst...
Digital to Analog Circuits
Analog to Digital Circuits
Data Logging Circuits
Data Bus Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity