Wireless IR headphone receiver
Category: Main page » Infrared technology

Wireless IR headphone receiver

A photodiode Dl feeds high gain IR remote control preamp 1C, a CA3237E. U2 is a PLL FM detector tuned to around 100 kHz. The detector output is amplified by U3 and it can drive a speaker or a set of headphones.

Source: http://www.circuitos.cl.tripod.com

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