Saturday, January 07, 2012

LASER AM modulator

Here's the LASER pointer AM modulator, QRO version, as promised in last post!

The receiver used in tests is the same I've been using in previous tests except I changed the 2 green LED's for an IR diode.
If the LASER is pointed directly at short distance directly to the diode the receiver (LM386) get's overloaded, just point slight off-side.

I'll stop for now this light comunication tests, was just to test the concept. I also tested the AM modulator circuit against a small crystal oscillator buffer and it worked nice.

Have fun!

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