This circuit was found in a 1964 Electronic Design. It generates opposite phase signals from an input signal. Modern equivalent transistors can be used in the same configuration.
This two-microphone amplifier was found in a April 1961 Radio Electronics Magazine. The circuit is...
The integrated circuit of this pulse generator is 4093 and the frequency can be between a fraction of...
Found in 90s Radio Electronics, this circuit is intended for amplifying analog video signals....