MOSFET Amplifier (CB24981E)

This high-power circuit was found in July 1986, Radio Electronics magazine, requiring a high-current source. Equivalent MOSFETs can be tested

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Pulse Generator (CB21349E)
This circuit was obtained from an English documentation based on a 74121 TTL integrated circuit....
Biphase VCO 4046 (CB25249E)
This circuit generates signals with opposite phases determined by C1 and adjusted by R2. The...
Audio Preamplifier (CB18560E)
The presented circuit uses two old germanium transistors. We found this configuration in a...