This circuit is intended to trigger SCRs on the positive half cycle for solenoid control. The circuit is from the 1967 General Electric SCR Manual.
This logic probe was found in a Popular Electronics from the 90s. The circuit is TTL and must be...
The integrated circuit used in this configuration is not common today. The zener determines the...
The original frequency of the Pierce Oscillator with bipolar transistor is given by the crystal, which...