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Infrared Circuits
IR Circuits:  #'s - A         B - H         I - K         L - Q         R - S         T - Z


Last Updated on:
Tuesday, October 24, 2017 02:55 PM

 

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Circuits Designed by Dave Johnson, P.E. :

TV /VCR Remote Range Extender CircuitI often get frustrated by how poor some infrared remotes in many new electronic devices operate.  I used to be able to turn on the TV from 30 feet away.  Now, it seems that I have to get within 15 feet.  To address this issue, I designed the circuit shown below.  The circuit taps into the TV remote’s existing infrared LED and drives 8 more efficient devices.  The result is a communications range some 4 to 5 times longer.. . . Circuit by David Johnson P.E.-October, 2005

TV-VCR Light Source 40Khz RepeaterThis circuit is designed to be placed directly in front of a standard TV or VCR remote.  The exiting light pulses produced by the circuit match the pulses from the remote but are about 10 times more powerful . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2000

Use Color Film Negative to Make an Optical FilterThis isn’t an electronic circuit but the file shows the curve for an optical filter made from exposed color film.  The material blocks most visible light but is very transparent to 880nM infrared light.  Kodak 100ASA is exposed to "cool white" fluorescent light for about 5 seconds . . . Hobby Circuit designed by Dave Johnson P.E.-January, 1998

Voltage to Frequency Converter + 1us LED Pulse DriverThis circuit receives the signal from the above amplifier and launches powerful 1uS infrared light pulses from a low cost LED that are frequency modulated by the audio information.  The 10KHz center frequency of the pulse stream is low enough so a standard. . . Circuit by David A. Johnson P.E.-March, 1999

Temperature controller keeps IR Detector at 8ºK -  01/07/99 EDN-Design Ideas Sensitive infrared array detectors must operate at a low temperature to avoid thermally generated dark current throughout the photoconductive elements.  This requirement is particularly true for SiAs array detectors, which Page includes several designs.  Scroll to find this one __ Circuit Design by Jerry Penegor, Space Sciences Laboratory, University of California—Berkeley

Temperature-Measurement Scheme Uses IR Sensor & Sigma-Delta ADC -  3-Apr-03 EDN-Design Ideas Many noncontact temperature-measurement systems use infrared sensors, such as thermopiles, which can detect small amounts of heat radiation.  Biomedical thermometers that measure the temperature of an ear or a temple use noncontact temperature measurement, as do automotive-HVAC systems that adjust temperature zones based on the body temperature of passengers __ Circuit Design by Albert O'Grady and Mary McCarthy, Analog Devices, Limerick, Ireland

The Ultimate Wireless Volume Control -  17-Aug-11 -Design News:   Andrew Morris decided the usual wireless volume controls don’t offer enough functionality, so he created the ultimate volume control that connects between a computer or MP3 player and an amplified speaker system. __ Designed by Andrew R. Morris, Gadget Freak-Case #192

TinyIR Learning IR Remote Control Receiver -  Adding IR remote control to your next project, or to an existing one just got a whole lot easier.  With TinyIR, just apply power, train the chip to recognize the key codes you want to use, and you're ready to go.  Code patterns are safely stored in internal non-volatile EEPROM.  The chip can be re-trained many times if needed

Top 20 RFID Project Ideas -  Radio-Frequency Identification  (RFID) is a technology that uses radio-frequency electromagnetic fields to transfer information from a tag to RFID reader for identification purposes. The tags do not require battery power. They __ 10/5/2016EFY

TRF VHF Wireless Data Receiver -  This receiver is little more than a crystal set with gain.  Operating voltage range spans 3V to 5 V.  The one on my bench runs down below 2.5 V.    Why TRF? The beauty of this approach lies in its simplicity and lack of critical components.  A transistor is used as an RF detector/amplifier, with the emitter and collector at AC ground  (no such thing as Miller capacitance here!) .  All the gain occurs at baseband, and most of that gain occurs in a very inexpensive but good dual op amp.  If the LC resonant frequency is pretty close to the transmitter's frequency, it will work. __ Designed by Dick Cappels

TV /VCR Remote Range Extender Circuit -  I often get frustrated by how poor some infrared remotes in many new electronic devices operate.  I used to be able to turn on the TV from 30 feet away.  Now, it seems that I have to get within 15 feet.  To address this issue, I designed the circuit shown below.  The circuit taps into the TV remote’s existing infrared LED and drives 8 more efficient devices.  The result is a communications range some 4 to 5 times longer.. . . Circuit by David Johnson P.E.-October, 2005

TV-VCR Light Source 40Khz Repeater -  This circuit is designed to be placed directly in front of a standard TV or VCR remote.  The exiting light pulses produced by the circuit match the pulses from the remote but are about 10 times more powerful . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2000

Unidirectional RF wireless transmitting & receiving -  Digital in, digital out, with no wires!!! Yes, it can be that easy but there are some things you will find out about going wireless that you may not have counted with wired connection.  This App Note will guide you through a simple RS232 link and illustrate how easy these devices are to use as long as you know how to handle a couple wireless phenomenon and plan your project to take these into account.   __ Contact: info @ wzmicro.com

Universal Infrared Controller for a PC -  This simple circuit allows you to record any Infrared remote control signal on your PC, and then play it back.  This is particularly useful if you want to control appliances such as TVs, VCRs, CDs etc.  from your computer.  The device simply connects to the parallel port of your PC.   This circuit was originally published in Electronics Australia, September1998  __ Designed by shaunwilson19 @ yahoo.com

Universal Infrared Receiver -  I think you know what's a UIR so IF it isn't so go to TIES BOS page and learn something :-) .  !  Briefly it's an Infrared receiver which communicated with your pc to command many windows application, so once you have built the interface, programmed the pic16f84 with the code and connected everything to your serial com2 you'll be able to command your pc applications through your TV or VCR remote ! __ Designed by Alfred73

Universal IR Remote Control Tester -  This tester consists of two integrated remote control receivers whose outputs drive an LED to indicate when a suitable infrared signal is received.  To cover all current infrared remote controls, one receiver  (the TSOP1736) has maximum sensitivity to carriers at 36 kHz, the other  (the TSOP1738) to carriers at 38 kHzmust register on this site __ Designed by Published in Elecktor July/Aug, 2010

Universal Serial Infrared Receiver -  Infrared based electronic circuit diagrams / circuit schematics __ Designed by John Main

USB -IR-Transceiver (aka Ghetto Blaster) -  This nice gadget directly uses the bitstream coming out of the USB-UART-Adapter to key an oscillator  (on/off) , build around a NE555.  The carrier is approx.38 kHz, close to those of a Remote Control.  Just louder :-)   A recycled IRReceiver provides an rx path. __ Designed by Alexander C. Frank, aka Ajarn Changpuak

Use Color Film Negative to Make an Optical Filter -  This isn’t an electronic circuit but the file shows the curve for an optical filter made from exposed color film.  The material blocks most visible light but is very transparent to 880nM infrared light.  Kodak 100ASA is exposed to "cool white" fluorescent light for about 5 seconds . . . Hobby Circuit designed by Dave Johnson P.E.-January, 1998

VHF Wireless Data Transmitter -  This project is only an example of what can be done.  The legalities of building and operating radio transmitters are different in different parts of the world.  Be sure to check your local laws before building or operating a transmitter like the one shown here. __ Designed by Dick Cappels

Voltage to Frequency Converter + 1us LED Pulse Driver -  This circuit receives the signal from the above amplifier and launches powerful 1uS infrared light pulses from a low cost LED that are frequency modulated by the audio information.  The 10KHz center frequency of the pulse stream is low enough so a standard. . . Circuit by David A. Johnson P.E.-March, 1999

Wireless Alarm Transmitter & Receiver -  Here are two circuits that make it possible to add up to eight detectors to an existing alarm system without running a single cable.  Each transmitter has a unique number that is reported to the central unit in the event of an alarm, and the transmitter battery condition is monitored.  must register on this site __ Designed by Published in Elecktor July/Aug, 2010

Wireless Auto Tachometer -  Anyone performing their own automobile tune-ups knows how important it is to know your engines speed.  With this tachometer, you can measure your engines speed without any connections or annoying timing lights.   __ Designed by Aaron Cake

Wireless Baby Monitor -  A baby monitor can help you find peace of mind.  You can now monitor your sleeping baby with this wireless baby monitor.  It is a radio system used to remotely listen...__ Electronics Projects for You

Wireless Baby Monitor 2 -  This wireless baby monitor circuit using FM is designed to operate at a frequency of 100MHz.  Its range of transmission is more than 100 metres with a 75cm wire antenna.__ Electronics Projects for You

Wireless battery energizes low power Devices -  11/22/07  EDN-Design Ideas A simple 13.56-MHz oscillator broadcasts power to a receiver circuit __ Circuit Design by Carlos Cossio, Santander, Spain

Wireless bicycle brake light -  04/17/14  EDN-Design Ideas The TI LDC1000 senses bike wheel rotation and controls a stop light.  My submission video shows the new Texas Instrument's LDC1000 attached to the rear wheel fork of a bicycle, where it senses the spokes as the wheel rotates.  This proof-of-concept demonstration shows how perfect this sensor is for my goal of an improved bicycle brake light that has many advantages.  I'm passionate about getting this invention completed and on the market as soon as possible, where it can help prevent some of the many injuries and deaths to the hundreds of millions of the world's bicyclists each year.   __ Circuit Design by John Craig

Wireless controlled light dimmer -  The meaning from this design is to build it in -i.  e.  a shaded lamp- and to switch this lamp on and off the normal way, just like it was switched before the dimmer was build in, then you could by exception dimming the lamp more or less with your TV remote control.  When you switch the power on there will follow a soft-start till the lamp burns at the previously adjusted dim level.  With the '0' button in TV mode you can dim the lamp, turn more and less bright.  The remote control should send more than one RC5-signal per button-press seeing that the first one is ignored, this does imply that when the remote button is pressed a short time, there nothing happens.  With the P+ and P- button from a system at choice you can adjust the maximum and minimum dim-levels and with the '1' button the start-up brightness.  

Wireless Digital Thermometer for Multiple Sensors -  A lot of remote sensing thermometers have a problem with measuring more than one temperature at a time. To overcome this problem, a different technique is adopted here, which allows you to...__ Electronics Projects for You

Wireless Doorbell -  Installing a doorbell in an existing building is a difficult task as it involves wiring that can look shabby if not concealed properly.  Presented here is a circuit that does not...__ Electronics Projects for You

Wireless Doorbell -  The transmitter circuit is made up of two building blocks, the 303MHz RF oscillator and the 32kHz crystal controlled oscillator.  The 303MHz oscillator consists of a self-oscillating circuit made up of the coil.   __ Contact: Collin Mitchell

Wireless Equipment Control using AT89c51 -  Here is a microcontroller based wireless equipment controller that can switch on or switch off up to four devices at a desired time interval set by the user in the transmitter....__ Electronics Projects for You

Wireless for the Bench Top ATtiny12 -  This section describes an experimental low power, low bandwidth data signaling system that was initially made to operate at 55 MHz  (television channel 2 in the U.  S.) .  Before operating a radio transmitter, find out what kind of transmitter operation, if any, is permitted in your locality.  Radio transmitter operation is a serious legal matter.  This design __ Designed by Dick Cappels

Wireless Gesture-Controlled Robot -  In this project we are going to control a robot wirelessly using hand gestures.  This is an easy, user-friendly way to interact with robotic systems and robots.  An accelerometer is used...__ Electronics Projects for You

Wireless Infrared PIR Sensor -  How to modify current "wired" sensor in order to make them wireless.  You save money, and get rid of the problem of all those wires.   __ Designed by Projects & Ideas from Nutchip.com

Wireless IR Headphone RX-TX CD4 046 -  Schematic only __ Designed by va3iul

Wireless Liquid Level Sensing for Restaurant Applications -  Since restaurants often make much of their profits on drinks, it is critical for servers to offer
refills in a timely fashion.  We propose wireless liquid level sensing glassware to aid in this task.
Specially instrumented glassware detects fluid levels via a high-resolution capacitance measurement.
A coil embedded in the table inductively couples power to the glasses, and provides a path
for data exchange.  Our prototype glass uses a standard microprocessor and a small number of
passive components, making it extremely inexpensive. __ Designed by Paul H. Dietz; Darren Leigh; William S. Yerazunis

Wireless Local Network for Palmpilot Large PDF -  Not English __ Designed by Jan Beutel, Tobias Bösch

  >>>

Infrared Circuits
IR Circuits:  #'s - A         B - H         I - K         L - Q         R - S         T - Z

 


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