Wireless Infrared Handset (CB20980E)

This circuit is from a Popular Electronics from the 90's. The audio amplifier admits equivalent. The others integrated are not very common today.

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The circuit is from a Radio Electronics magazine from October 1987. The Triac must be equipped with a...
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The integrated circuit used is not common today and the voltage gain is unitary. The circuit is...
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This source with two symmetrical output voltages was found in 90s Radio Electronics. The 22 V...