Long Range IR
Transmitter - This is a circuit for a long range IR
transmitter that uses three IR LEDs in series to increase the power of IR signal generated. . . . [© EFY
Enterprises Pvt. Ltd. All rights reserved.]
Long Range IR
Transmitter - This Long range Infrared transmitter can
emit pulsed IR rays up to 10 meters. This IR transmitter is ideal to use in Infrared receivers using
Phototransistor or Photodiode as IR sensor. The circuit is a simple Astable Multivibrator using IC NE555.
Resistors R1, R2 and capacitor C1 fix the output frequency to 1 kHz. T1 is the. . . [Circuit Posted by D
Mohankumar]
Long-Range IR
Transmitter - Most of the IR remotes work reliably within
a range of 5 metres. The circuit complexity increases if you design the IR transmitter for reliable operation
over a longer range, say, 10 metres. To double the range from 5 metres to 10 metres, you need to increase the
transmitted power four times. . . . [© EFY Enterprises Pvt. Ltd. All rights reserved.]
Low Cost‚ High Performance Receiver for
Wireless Applications 1/16/94 - Application Note Doc
#904. . . [California Eastern Laboratories]
Low-Power FM Wireless Microphone - Small, wireless microphone that will transmit a whisper to a nearby (1/4 mile radius) FM
radio, tuned to the 100 108 Mhz region of the dial. Powered by 9-volt battery, and features hand-wound inductor.
This Detailed contains theory of operation, construction tips, and some testing procedures. . . .
Low-Power voltage-to-frequency converter makes a wireless probe for testing an
inductive power supply - 05/26/05 EDN Design Idea
Inductive pickup measures low-power circuit's supply. . . [by Francis Rodes, Eliane Garnier, and Salma Alozade,
ENSEIRB Talence, France]
Mark 1/1A - This circuit is used to relay signals from an Infra Red remote control in one room to an IR
controlled appliance in another room. . . . [Andy Collison]
Measuring the speed of light with an infrared LED
/ photodiode (TDOA) - Infrared based electronic circuit
diagrams / circuit schematics. . .
Micro based PIR to IR remote
converter - Infrared based electronic circuit diagrams /
circuit schematics. . . [Eddie Matejowsky]
Micro Based PIR to IR Remote
Converter - Infrared based electronic circuit diagrams /
circuit schematics. . . [Eddie Matejowsky]
Micro Power 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 .
. . [Circuit by Dave Johnson P.E., 06/04/00]
MIMO Wireless LAN PHY Layer
(RF) Operation & Measurement Application Note 1509 -
Application Note. . . [Aligent]
Minimizing SUN's Noise in IR Reception - ASCII format. . .
MK5 Infra Red Repeater - The latest addition to my collection of Infra Red (IR) Repeater circuits. The Mark 5 is a
much improved version of the Mark 1 circuit and has increased range and sensitivity. It is also immune to the
effects ofambient light, daylight and other forms of interference. In addition it works with IR modulation
freuencies in the range 30 to 120kHz making the Mk5 circuit the best choice for compatibility with remote
controls. . . [Andy Collison's design]
Model Railroad Infrared Proximity
Switch - Circuit for model railroad trains. . . . [from
Rob Paisley's Model Train web site]
Modulation Detector for IR
Remote Controls - An outboard pass transistor used to
increase the current output of a voltage regulator IC. . . . [Andy Collison]
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