This electronic ignition for cars of the time was found in the Radio Electronics magazine of May 1976. The circuit uses power transistors that must be mounted on heat sinks.
This phase-shift oscillator with a transistor generates sinusoidal signals in the audio range. The...
Found in a 1990 Electronics Handbook, this circuit causes an LED to flash when the phototransistor receives...
The transistors of this timing circuit may be more modern types such as BC548 and BC558. The...