Found in a 1967 American documentation, this circuit produces a pulse with a delay that depends on the components used. The operational is from the time.
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...