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Simple laser transmitter/receiver circuit diagram

2015-01-12 04:46  
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This article said is a simple laser transmitter/receiver circuit diagram. The principle is simple and very practical. Want more thoroughly grasp the principle, you should understand and be familiar with the major components of the circuit, such as:  LM386. This set of two circuit from the basis of a very simple light emitter. A laser beam modulation, and then to a receiver, demodulates the signal, and then introduces the information (voice, data, etc.). The whole thing is very easy to set up, do not need special part execpt the laser itself. The laser is available fromMWK industry. In the transmitter principle, no ballast resistance because most small laser power supply has a built in. May be different, you may need a resistor. The receiver should stay away from the bright lights. You may want to keep a piece of paper in front of the Q1 laser from drown it. In order to get any decent number of modulation, you may need to drive with more then a T1 watt. This circuit can transfer the computer data with the use of two modem chip. 

CAUTION:LASER RADIATION

Schematic Of Transmitter

Schematic for LASER transmitter

Schematic Of Receiver

Schematic for LASER receiver

Parts:

C1, C220.1uf Ceramic Disc Capacitor

C31100uf 25V Electrolytic Capacitor

R11100K Ohm 1/4W Resistor

R211M Ohm 1/4W Resistor

R3110K Pot

Q11NPN Phototransistor

U11741 Op Amp

U21LM386 Audio Amp

SPKR118 Ohm Speaker

T118 Ohm:2K Audio Transformer

MISC1Wire, Board, Knob For R3, LASER Tube and Power Supply

 


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