This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps. The diodes can be general purpose or even 1N4002. The transformer is 6.3 V with 100 mA or more current.
This simple oscillator with just one transistor has a frequency determined by the characteristics of the...
We found this circuit in the January 1979 issue of Radio Electronics magazine. Components are...
Found in a 90’s Radio Electronics magazine, this circuit uses a component from the time, difficult...