Product detector (CB9684E)

Found in Motorola documentation from the 1980s, this circuit employs an integrated device from that time, which is unusual today.

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Transistor Timer (CB13971E)
This circuit is from an English publication from 1965. The transistors used are rare, however, they...
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This low voltage circuit was found in the November 1960 Radio Electronics magazine announcing new...
Wireless Distortion Pedal (CB18018E)
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