Transistorized multimeter (CB7355E)

This circuit is from a 1967 Triplett manual. The circuit uses components of the time, the common FET and the general-purpose bipolar transistor.

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CMOS Crystal Oscillator (CB25578E)
The figure shows how to use a CMOS amplifier as a crystal-controlled oscillator. The circuit is...
22 W Automotive Amplifier TDA1516Q (CB15375E)
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Solar timer (CB20498E)
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