This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can generate 20 to 100 MHz signals operating at the fifth harmonic of the crystal.
This metering bridge circuit uses one power supply only. The operational ones depend on the...
This circuit was found in a 1992 documentation and has excellent sensitivity, using components that...
Found in ancient American documentation, this circuit produces a pulse every 8 Hz of a 400 Hz...