Indicated for checking the operation of small FM transmitters, this circuit was found in an Australian publication from 1991. The components are all common nowadays.
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...