Differential Output Amplifier (CB6135E)

This circuit of old American documentation (1965) can be applied to any transistor.

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455 kHz Generator with MOSFET (CB23991E)
We found this circuit in a Radio Electronics magazine from December 1969. The circuit uses a...
Balanced Microphone Amplifier (CB12459E)
We found this circuit in a 1991 publication. It is intended for low-impedance microphones,...
12 to 9 or 6 V Converter (CB476)
This circuit can be used in the car to convert the 12 V from the battery in 6 or 9 V up to 2 A....