Peak sensor with tunnel diode (CB21514E)

This circuit was found in old General Electric documentation. The circuit makes use of a unijunction programmable transistor.

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VCR Amplifier (CB25269E)
This circuit for VCR recording heads was found in the February 1990 issue of Radio Electronics magazine....
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This very simple continuity tester uses a small 1.5 V lamp (type used in flashlights). Can be...
Transistor Radio TR3B (CB18388E)
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