This amplifier was found in a tube equipment manual from 1947. The high-fidelity circuit has pentode tubes at the output and a source with transformer.
This circuit was obtained in a Texas Instruments publication. It is a third-order filter with...
This “zero crossing detector” detects when a signal passes through the zero-volt point producing an...
The circuit shown is from the Motorola Linear Databook of 1990. This circuit converts signals in...