Infrared Remote Control #2:  simple circuit which controls one relay output (added 4/02)

Infrared Remote Control #3:  (electronic circuit added 7/03)

Infrared Remote Control Extender:  (electronic design added 9/02)

Infrared Remote Control Tester #1:  measures the relative intensities of different Infrared light sources (added 4/02)

Infrared Remote Control Tester #2:  (electronic circuit added 4/05)

Infrared Remote Control Tester:  (electronic Circuit / Schematic added 10/04)

Infrared Remote Control Timer:  (electronic Circuit / Schematic added 10/04)

Infrared Remote Jammer:  (circuit added 7/02)

Infrared Remote Transponder:  (electronic circuit added 7/03)

Infrared Switch:  (electronic design added 9/02)

Infrared Theremin Musical Instrument:  (electronic circuit added 4/05)

Infrared Toy Car Motor Controller:  (electronic Circuit / Schematic added 10/04)

Infrared Transmitter and Receiver Schematic Diagrams:  (electronic circuit added 7/03)

Infrared Transmitter Circuit:  (circuit / schematic added 2/03)

Infrared Transmitter for Locomotives:  (electronic circuit added 7/03)

Infrared/Ultrasonic Beacon:  (electronic circuit added 7/03)

IR Detector #2:  (electronic circuit added 7/03)

IR Detector for Robotics:  (electronic circuit added10/04)

IR Detector:  (electronic circuit added 4/05)

IR Detector/Emitter:  (electronic circuit added 7/03)

IR distance ranger covers 1 to 20 cm:  04/11/02 EDN Design Ideas  /  (added 1/05)  Commercially available IR distance rangers typically handle a 3to 30-in. detection distance. Many times, it is necessary to determine smaller distances. The circuit in Figure 1 is useful for measuring small distances to reflective surfaces. Its measurement range is from less than 1 cm to approximately 20 cm for a flat, white surface. ...