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


Last Updated on:
Thursday, November 30, 2017 10:29 AM


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

Circuits Designed by Dave Johnson, P.E. :

1us LED Pulse Driver + Voltage to Frequency ConverterThis 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 . . . Hobby Circuit designed by David Johnson P.E.-March, 1999

20Mhz VCSEL 3mw Laser Test CircuitThis circuit takes advantage of some new vertical cavity surface emitting lasers   (VCSEL) that donít require light output control circuits.  The circuit shows how to drive the device from a single high speed CMOS IC. . . Circuit by David Johnson P.E.-June, 2000

3mw Laser Test-20Mhz VCSE - LThis circuit takes advantage of some new vertical cavity surface emitting lasers   (VCSEL) that donít require light output control circuits.  The circuit shows how to drive the device from a single high speed CMOS IC . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000

40Khz Burst Laser Diode DriverSome laser tag or simulated combat games can use this circuit to send short bursts of modulated laser light at the opponent's vest, equipped with a matching light receiver.  The circuit operates from three 1.5v cells   (4.5v) that should provide enough energy . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2000

40khz TV-VCR Light Source 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.  Using the device, the remote can operate a TV or VCR over three times the normal distance. . . Circuit by David Johnson P.E.-June, 2000

ĶC Provides Wireless Keypad Control -  10/08/98 EDN-Design Ideas -    (File contain several circuits.  Scroll to find this one)  Portable systems, such as telephone handsets, make extensive use of low-dropout   (LDO]regulators.  se components provide noise-sensitive parts with a stable power-supply line __ Circuit Design by Lloyd Khuc, Motorola Inc, Austin, TX

10-Channel IR Remote Control Receiver -  It works with commercial IR remote transmitters and is a snack to build.  The channels can be wired for momentary or toggle operation.__ SiliconChip

12-channel Infrared Remote Control -  It uses an infrared remote control unit and can switch 12 circuits, all either momentary or latched.__ SiliconChip

1us LED Pulse Driver + Voltage to Frequency Converter -  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 . . . Hobby Circuit designed by David Johnson P.E.-March, 1999

2 Way IR Terminal -  This unit provide 2 way IR communications using a numeric keypad and an LCD display.  Data is sent and recieved in ASCII with no regard to what the data means to any particular device __ Designed by Luhan MonatMesa Arizona

20Mhz VCSEL 3mw Laser Test Circuit -  This circuit takes advantage of some new vertical cavity surface emitting lasers    (VCSEL) that donít require light output control circuits.  The circuit shows how to drive the device from a single high speed CMOS IC. . . Circuit by David Johnson P.E.-June, 2000

3 Channel IR Remote Control -  This project is a 3-channel IR remote control with 3 output relay and easy to build.  Features: CPU PIC12F629 at 4MHz crystal for Tx/Rx, 3 channel output relay, The Tx use sleep mode for saving battery power, Use Phillips RC5 protocol, distance more than 7 m, Easy circuit to build and assembly and small amount of components.  Uses RC5 protocol which is probably the most used by hobbyists, probably because the wide availability of cheap remote controls and easy to understand.   __ Designed by

3mw Laser Test-20Mhz VCSE - L -  This circuit takes advantage of some new vertical cavity surface emitting lasers    (VCSEL) that donít require light output control circuits.  The circuit shows how to drive the device from a single high speed CMOS IC . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000

4 channel infrared remote relays -  4 Channel Infrared    (IR) Remote is a simple kit using the famous HT12A and HT12D encoder / decoder chips from Holtek __ Designed by Rajkumar Sharma

40Khz Burst Laser Diode Driver -  Some laser tag or simulated combat games can use this circuit to send short bursts of modulated laser light at the opponent's vest, equipped with a matching light receiver.  The circuit operates from three 1.5v cells    (4.5v) that should provide enough energy . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2000

40kHz IR Tester -  Use this circuit to test if the light coming from your 40khz IR emitter is really emitting the right frequency.  The schematic says to use a GP1U5X ir module, but probably any 40khz detector module will work.   __ Designed by Andy Wilson

40khz TV-VCR Light Source 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.  Using the device, the remote can operate a TV or VCR over three times the normal distance. . . Circuit by David Johnson P.E.-June, 2000

4-CH Remote Control -  You can construct your own long range infrared  (IR) wireless remote using Motorola's MC145026 emitter and MC145027 detector chips.  With your remote you can control devices up to 20 feet  (7 meters) away.  It operates similiarly to a TV remote.  You just point the emitter at the detector, push a transmit button.  The detector then interprets your data signal.  You can use this circuit to remotely turn on/off devices  (like a motors, relays, home appliances) .   __ Designed by Boondog web site

5 channel infrared remote relays -  5 Channel Infrared    (IR) Remote is a simple kit using the famous HT12A and HT12D encoder / decoder chips from Holtek __ Designed by Rajkumar Sharma

555 Based IR Proximity Detector -  Scroll down for this project.     Sometimes you want a simple solution to a problem and you don't mind if your main controller has to do the work.  This IRPD requires the main robot processor to choose which side to look at, and requires it to "debounce" the results for reliably operation.  But, it still works really well without any complex program code. __ Designed by Dennis Clark

555 Based IR Proximity Detector -  Sometimes you want a simple solution to a problem and you don't mind if your main controller has to do the work.  This IRPD requires the main robot processor to choose which side to look at, and

555 timer 40khz IR Oscillator -  This circuit oscillates two infrared LED's at 40 khz.  To make sure it is transmitting IR light, you can get a little tool from radio shack for about $5.  It is a small sheet of plastic about 1" by 3" with a special strip of material, that when exposed to IR light glows    (it's actually kinda cool) A way to check for 40khz IR __ Designed by Andy Wilson

6-channel IR remote system with  micro PIC 16F84 -  This project is a remote control system based on a pic and an universal remote controller  for TV, named SIMPLEX.   __ Designed by Alfred73

6-Channel IR Remote Volume Control-Part 1 -  It's ideal for use with Dolby 5.1 digital decoders and lets you adjust the volume of all six channels simultaneously.__ SiliconChip

6-Channel IR Remote Volume Control-Part 2 -  It's ideal for use with Dolby 5.1 digital decoders and lets you adjust the volume of all six channels simultaneously.__ SiliconChip

8 Channel IR Remote Control -  Simple IR remote control with up to 8 channels!

9 Volt 2 Amp PS - U -  A simple 9 Volt 2 amp supply using a single IC regulator.   __ Designed by Andy Collison

A 70-W S-Band Amplifier for MMDS & Wireless Data/Internet Applications 12/11/00  -  App Note 1038__ California Eastern Laboratories

A Serial Infrared Remote Controller -  This is a simple, cheap device that can be connected to any serial port to control most components that have infrared remote controls.  I designed and built it    (on a solderless breadboard) in 1991.  In 1992 I wrote a lengthy description of it for an electronics class.  In 1994 I finally designed a PC board for it, using a free, X-based PC board design program called pcb, and in 1995 I etched several of the boards and made the final product __ Designed by John DuBois

A/V Sender -  This small circuit transmitter processes the signs of audio of a sound table or microphone, and the signs of video of a camera, or still the audio signs and video of a DVD, Video-cassette or even it sweats her video plate has an exit of composed video, you can transmit direct of your computer.  Playing them in a channel free from the strip of VHF __ Designed by Toni on Aug 19, 2009

Accomodating Offset IF Filters -  Digitally synthesized FM tuners normally use ceramic IF filters centered at 10.7 MHz. But the characteristics of individual filters vary. Murata specifies filter center frequency as 10.67 to 10.73 MHz. Outlier filters may make a tuner more susceptible to interference on one side of channel center than the other.  __ Designed by Brian Beezley K6STI

Add ethernet connectivity your projects -  The kit contains a development board with a 32-bit MIPS4k PIC32 microcontroller, a 10/100 Ethernet port, an on-board debugger and programmer, and an OTG USB port.  You can get the User's Guide and code examples from the Microchip ESK page.  Microchip has a software library collection for their line of PIC16/PIC18/PIC24/PIC32 microcontrollers called "Microchip Application Libraries" or MAL.  This collection includes the TCP/IP stack the kit uses. __ Designed by Peter Jakab

An Infra-Red Remote Control Extender -  This is a battery powered Infra-Red Link that will allow you to change channels on your Satellite Receiver and operate the controls on your VCR & DVD from anywhere in the house.   __ Designed by Ron J

An Infra-Red Remote Control Extender -  Miscellaneous:  This is a battery powered Infra-Red Link that will allow you to change channels on your Satellite Receiver and operate the controls on your VCR & DVD from anywhere in the house.  __ Designed by Ron J.

Audio/Video Sender -  This circuit provides you with wireless audio and visual transmission to a TV.  The TV acts as a receiver, eliminating the need to buy a separate monitor.  You can also hook it up to a VCR or CCD Camera, and even set up a remote CCTV security system!Circuit design __ Contact: info @ wzmicro.com

AVR Based Serial Port IR Receiver -  This is a simple IR receiver circuit which plugs into a serial port of a computer.  Okay, there are many other circuits of this kind, and most of them are even simpler, but this circuit has two major advantages:    (1) it uses an Atmel AVR RISC microcontroller    (an AT90S2313) instead of the usual PIC microcontroller and    (2) it uses a MAX232 for the generation of valid RS232 levels.   __ Designed by Klaus Stock


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


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