500 MHz Amplifier (CB9178E)

This circuit was found in a Motorola documentation from the 90s. The transistor used is uncommon today. The output power is 1 W.

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Call indicator (CB7235E)
We found this circuit in an old neon lamp application manual. The circuit stores a call. The...
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This isolation circuit for audio signals was found in the August 1992 issue of Radio Electronics...
Fuzz 4 (CB4874E)
This fuzz uses only one transistor that can be the BC548. Signal input and output cables must be...