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 circuit makes it possible to recover programs recorded on cassette tape as was common in MSX...
This ultra-simple adjustable power source is of great use on the bench of any electronics...
Found in a 1990s American technical brochure, this circuit is intended for alarms that use as...