Non Inverting Amplifier (CB6433E)

Based on an operational of the time, this Popular Electronics circuit can be designed with any equivalent operational.

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Simple Timer 555 (CB19025E)
This timer was found in the Texas Instruments 1996 linear applications manual. The relay must be...
Photoelectric comparator (CB7508E)
This circuit compares two light intensities, providing the indication on an analog instrument. The...
Transistor Voltmeter (CB16238E)
This circuit was obtained in a 1983 publication. It is a 1-transistor voltmeter, capable of...