Electronic Circuits, Hobby Circuits, Audio-video circuits, Radio circuits, Power supply, Digital Circuits, Embedded Circuits, Amplifiers
無料の電子回路、ホビー回路、オーディオ-ビデオ回路、無線回路、電源、デジタル回路、組み込み回路、アンプ
Thursday, January 3, 2008
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.
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