Signals of up to a few tens of kilohertz can be generated by this circuit found in a European publication from the 1980s. Transistors admit equivalents and the unijunction can be 2N2646.
Powered by 12 or 13.6 V, this transmitter has an output power of the order of 1 W, which provides...
This circuit makes two lamps (or LEDs) blink at a speed that depends on C1 and C2. Any MOSFET can...
This crystal-controlled 1000 kHz oscillator was found in 1980s American documentation. The...