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Category: Light Laser LED Circuits / Infrared This circuit is also crossed to: Remote Control Views: 1303 Rank: 0 This IR remote extender can increase the range of most simple IR remotes (those operating on a 40KHz modulation) a significant distance. In use, the remote is pointed toward the detector on the circuit, and a button is pressed. The Sharp IR detector then decodes the 40KHz modulated signal into a series of pulses, which trigger a 555 timer. The 555 outputs pulses which are re-modulated and used to drive an IR LED. The circuit is excellent for use in a large room like a presentation hall where a typical IR remote is a bit weak. By extending the wires to the output LED (using shielded cable) you can control a device where line of sight isn't available (such as a wall full of TVs in another room).R1, R6 2 10K 1/4W Resistor R2 1 1K 1/4W Resistor R3 1 10K Linear Pot R4 1 2.2K 1/4W Resistor R5 1 47 Ohm 1/4W Resistor C1 1 0.01uF Ceramic Disc Capacitor Q1, Q2 2 2N3904 NPN Transistor D1 1 IR LED Radio Shack 276 143C U1 1 GP1U52X IR Module U2 1 TLC555 CMOS Timer LMC555, 7555 MISC 1 Board, Sockets For U2, Wire Notes Only the CMOS TLC555 timer can be used in this circuit. The original NE555 cannot operate reliably at 40KHz. Acceptable substitutions are shown in the parts list. Almost all powerful IR LEDs can be used for D1 if the appropriate value of R5 is chosen. To calibrate the circuit, use a frequency counter. Connect it in parallel with D1 and then ground the base of Q1. Adjust R3 for 40KHz on the counter. If a counter is not available, you will just have to point a remote at the circuit, press a button, and then adjust R3 until it works. This can take a few tries as not all remotes transmit continuously. If you intend to remotely mount D1 any great distance, you will need to use shielded cable. Connect the shield to circuit ground. visit page.  R1, R6 2 10K 1/4W Resistor R2 1 1K 1/4W Resistor R3 1 10K Linear Pot R4 1 2.2K 1/4W Resistor R5 1 47 Ohm 1/4W Resistor C1 1 0.01uF Ceramic Disc Capacitor Q1, Q2 2 2N3904 NPN Transistor D1 1 IR LED Radio Shack 276 143C U1 1 GP1U52X IR Module U2 1 TLC555 CMOS Timer LMC555, 7555 MISC 1 Board, Sockets For U2, Wire Notes Only the CMOS TLC555 timer can be used in this circuit. The original NE555 cannot operate reliably at 40KHz. Acceptable substitutions are shown in the parts list. Almost all powerful IR LEDs can be used for D1 if the appropriate value of R5 is chosen. To calibrate the circuit, use a frequency counter. Connect it in parallel with D1 and then ground the base of Q1. Adjust R3 for 40KHz on the counter. If a counter is not available, you will just have to point a remote at the circuit, press a button, and then adjust R3 until it works. This can take a few tries as not all remotes transmit continuously. If you intend to remotely mount D1 any great distance, you will need to use shielded cable. Connect the shield to circuit ground. http://www.aaroncake.net/circuits/IR_Remote_Extender_Circuit.asp
Related circuits Simple Infra-Red Transmitter/reciever Shematics This 1 channel infrared transmitter/receiver remote control is the cheapest and simplest you can find. The transmitter transmits a sequence of pulses on 36 KHz frequency carrier. The diodes are Schottky type because of their low voltage drop (only 0.2V). The ripple counter 74HC4060 contains an... This unit uses one TSAL6100 IR/LED emitter from Digi-Key. This IR diode has a narrow (10 degree) radiation pattern at 940 NM. It is driven via 2n2904 transistor for maximum current pulses. The detector is a Vishay TSOP4838 38Khz integrated receiver module. The 38Khz signal for the emitter is... Using this low-cost project one can reproduce audio from TV without disturbing others. It does not use any wire connection between TV and headphones. In place of a pair of wires, it uses invisible infrared light to transmit audio signals from TV to headphones. Without using any lens, a range of... Wireless Ir Headphone Transmitter Circuit The transmitter for the wireless headphones is built around a CD4046 CMOS phase-locked loop, coupled with a driver transistor, and a pair of infrared LEDs. Although the CD4046 is comprised of two phase comparators, a voltage-controlled oscillator (or VCO), Ir-Controlled Soldering Station An IR-sensitive phototransistor is used to sense soldering-iron temperature. The phototransistor must see t Infrared Remote-Control Tester Circuit The infrared remote-control tester uses a sensitive PN-type solar sensor that is connected directly to a Darlington amplifier made up of transistors Q1 and Q2. Biasing is provided by R1 and PI, a variable resistor that serves as a sensitivity control. The collector lead of Q1 is the output lead... Invisible infrared pulsed laser The device generates an adjustable frequency of low to medium powered IR pulses of invisible energy and must be treated with care. The portable battery pack is stepped up to 200 to 300 volts by the inverter circuit consisting of Ql, Q2, and Tl. Ql conducts until saturated, at which time, the base... Q3 is an IR phototransistor that responds to a modulated IR beam. Q1 amplifies the ac component of the IR beam. Q2 drives a
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using an infrared repeater on an infrared receiver to control a motor General Electronics Chat. ... It's the same as saying you want to control your television (changing volume/channel or turning it on/off) through your remote control by being in another room. Problem is I can't find any repeater...
Signal repeater circuit based on Infrared remote control. Related posts. Free Electronic ProjectsElectronic hobby projects, Electronic circuit, Circuits, Hobby circuits, Digital circuits, digital e...LM567 Universal tone decoder integrated circuit ...
ok, first of all...i'm not sure of the exact difference between an "infrared repeater" or "infrared extender" but it's function is. ... an infrared receiver by using an infrared transmitter in another room without any wires. It's the same as saying you want to control your television (changing vo...
IR transmitters use near-infrared light which is just below the visible spectrum [Factoid: remote control IR transmitted signals can be seen with digital cameras and camcorders as appearing to be visible, purple light]. By using near-IR wavelengths, manufacturers can use cheap, plentiful, IR LEDs...
It has high noise immunity, is resistant to ambient and reflected light and has an increased range from remote control to the extender circuit of about 7 meters. It should work with any ... -An Infra Red wired Repeater circuit to control appliances from a remote location. Which Remote Control ......
Sewell Infrared Remote Control Repeater. Posted on October 21, 2012 by rseaman. Would you need in one. Ok so I just got my order from Monoprice for everything going into the theater. Reviews for ir infrared remote signal to a longer-range ...
Infrared (IR) Remote Control Repeater Kit
Infrared (IR) Remote Control Repeater Kit - Cables To Go
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