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
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
Light Laser LED Circuits
Infrared Motion Detector Circuit-IR motion sensor circuit with motion detector alarm
Infrared (IR) Motion Detector Circuit with motion detector alarm and infrared sensor.The motion sensor circuit diagram and working is given in detail..
IR Headset Circuit with headphone Transmitter and Receiver diagram
Here is a simple IR headphone circuit that is suitable for listening to TV or radio with out disturbing others. For beginners the IR headset is a better option than FM head sets because they often produce desirable sound quality with out tuning as well as difficult impedance matching that is often done in radio circuits which is difficult for begi
Infrared (IR) Sensor/DetectorCircuit using 555 IC
An Infrared or IR sensor/detector circuit diagram using 555 IC used mainly as Water level or Liquid level sensor and proximity detector circuit..
IR Widget Consumer infrared remote control capture and visualization
The IR Widget operates in a way that makes it compatible with modern multitasking operating systems. It is able to determine the carrier frequency and demodulate the carrier in the digital or analog domain. The captured information can be used to view, recognize or reproduce the signal. The
Sp6691 Remote Control 100khz Infrared Led Driver
Loop stability analysis usually starts from an open-loop Bode plot of the plant under study, e. g. the power stage of a buck or a flyback converter. From this diagram, the designer CAN extract phase and gain data within the frequency range of interest. His job then consists in identifying a compensator structure which will lead to the selected cros
IR Remote Control Extender Mark 3
This Mark3 version of the Infra Red extender is a special version designed to control appliances that use high frequency modulated IR remote controls..
IR Remote Control Modulation Detector
A circuit to extract and measure the modulated carrier of an Infra Red remote control. Note that the circuit does not physically separate control pulses from modulation, but amplifies the completereceived signal allowing the waveform to be displayed ideally on an oscilloscope or a frequency counter. Modulation frequencies between 1kHz and several
Infrared Remote Controls
This circuit will allow you to turn on any piece of equipment that operates on 115 volts ac. The reciever circuit is based on the Radio Shack infrared receiver module(MOD), part number 276-137. It is also available from some of the other sources listed on my Links page. The MOD accepts a 40khz IR signal that is modulated at 4 khz. When a signal is
Infrared Remote Control Stepped Attenuator
I don`t like motor potentiometers, especially if there are cheap and small attenuators but big motors. But big blue alps like ebay item No..
DIY Infrared Radar System
Chris has a great article about a do-it-yourself radar system build with PIC18F452. It s a great hobby project although the schematic..
Infrared Fire-Cracker Igniter
Firecrackers are normally ignited by using a matchstick or a candle. You have to run away quickly after igniting the fuse of the firecracker. This method..
Infrared Proximity Detector Alarm
This circuit can be built from readily available low-cost components, some of which may even be hiding in your junkbox! The indicated value of 22 ? for re..
Infrared Remote Control Jammer
This 555 timer circuit Remote control Jammer device it s useful when we need to block someone to use the remote control (children that change frequently t..
Infrared Remote Control Tester
The infrared detector module (GP1U52X) (Radio Shack 276-137) provides a 5 volt TTL pulse train corresponding to the digital code to the button of the remote control. In the lower circuit, the module output normally low a signal and a positive going pulse train whena signal is present. Other detector modules that an inverted output is in the...
Infrared Remote Extender
This project sprang from the need to be able to remotely control audio-visual equipment placed inside cupboards. RF-based commercial units such as those u..
Infrared Toy Car Motor Controller
This add-on circuit enables remote switching on/off of battery-operated toy cars with the help of a TV/video remote control handset operating at 3040 kHz..
IR (Infrared) DetectorCircuit
Men in particular enjoy the convenience of television remote controls often to the annoyance of their female partners. Men apparently want to know what..
On-off Infrared Remote Control
Most homes today have at least a few infrared remote controls, whether they be for the television, the video recorder, the stereo, etc. Despite that fact,..
Simple Infrared Control Extender
Lots of consumer electronic equipment like TV sets, VCRs, CD and DVD players employs infrared remote control. In some cases, it is desirable to extend the..
Infrared receiver by LM1458-CD40103
From This simple projects If you want circuits with special features,can be set the program to the circuit works, when the input pluse signal is entered of..
off infrared remote control schematic
As per the note on the schematic IC-2 is a 74HC74 TTL chip, look up the data sheet and it will show you what pins 7 and 14 are. The note for IC-3 is down lower its an AC optocoupler part number MOC3041. D2 is noted as a 15volt. 4 watt zener diode, a part number 1N5352 will work.
ph d scientist infrared sensor
Build a device to determine the depth of the flocculent layer in a lake. The flocculent layer is a mud layer that has a similar consistency of water. It is pretty difficult to determine its depth accurately from the surface. I have a paper that describes a device able to measure it precisely from the surface and I think that I can build it, but...
mic amplifier transmitted via infrared modulated pwm
infrared IR proximity detector/ IR beam barrier circuit diagram
The circuit uses the very popular Sharp IR module (Vishay module can also be used). The pin nos. shown in the circuit are for the Sharp & VIshay modules. For other modules please refer to their respective datasheets. The receiver consists of a 555 timer IC working as an oscillator at about 38Khz (also works from 36kHz to 40kHz) which has to be adj
Infrared detector circuit using PID20
This infrared detector circuit is designed using the PID20 integrated circuit manufactured by Siemens (which converts thermal radiation into electrical impulses), an operational amplifier and a few electronic components. The output signal at pin 3 is compared with a reference voltage equal to half the supply voltage. Reference voltage is taken fro
Infrared Remote Control Switch
Infrared Remote Control Switch Circuit Remote controls, specially cordless type, are very popular nowadays. Here is a simple and..
Infrared Remote Control Tester Circuit
Infrared Remote Control Tester Circuit This is a simple circuit you can build in order to test infrared remote controls. The circuit uses an..
IR transmitter and receiver
Hi, I wanted to build an IR-transmitter-receiver system to send signals to a device . Let`s say the device is a simple blue LED (just to make life..
Wireless IR Headphones circuit
Using this wireless IR Headphones circuit electronic project you can transmit audio signal using an infrared connection .This wireless IR Headphones circuit diagram electronic project is composed by two parts : transmitter and receiver . This is not an RF transmitter , so you will need to design both parts of application . Using this infrared...
IR Infrared Detector Circuit
This infrared detector can be used to detect the presence of modulated infrared signals in its vicinity from any electronic source, for instance, an IR han..
Infrared Detector Circuit with PID20
This infrared detector circuit uses a passive IR-detector component PID20. It converts heat radiation into electrical impulses. The output voltage of the PID20 increases when an object comes close to it, this object must be warmer than the surroundings. The voltage changes at the output of the IR sensor are sensed by the comparators IC2a and IC2b.
High Power IR Infrared Transmitter
This Infrared transmitter can activate IR based switching circuits from a distance of 10 meters or more. It is a high power IR transmitter driving two IR L..
Light Sensing Circuits
Light Dimmer 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...
Digital Signal Integrity
Interconnection and Timing of Digital Circuits
CMOS Circuits Tutorial