This amplifier with fixed AC bias was found in a 1947 documentation. The circuit uses two transformers in the power supply and two full-wave rectifier tubes.
This is a circuit widely used in power controls. When the alternating supply voltage goes through...
With a NAND trigger we can achieve pulse delay for digital applications in a relatively simple way,...
This circuit excites an LED, which will flash at a frequency adjusted by the trimpot. The other...