Found in a 1947 publication, this circuit uses 4 parallel/push-pull tuber in the output stage. The circuit employs dual power supply with two rectifier tubes.
The TTL circuit shown in the figure generates a 1 MHz rectangular signal depending on the 20-200 pF...
This assisted ignition circuit (which reduces the spark current) dates to the time when cars had...
This amplifier uses an integrated circuit from the 70s, which is no longer common on the market. The...