2-transistor amplifier (CB26314E)

This amplifier stage was obtained from a Popular Electronics from the 90s. The transistors are general purpose.

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Servo motor driver (CB7154E)
Suggested by Motorola documentation from the 1980s, this circuit makes use of MOSFETs of the time....
Amplifier LM386 with Pre 741 (CB18632E)
In the figure we have a small general-purpose amplifier with the LM386 integrated circuit and...
Digital Multimeter Thermometer (CB17031E)
This circuit allows you to use a digital multimeter as a thermometer. The sensor is mounted in a...