This circuit shows how to make an adaptation on an AM receiver to receive CW and SSB signals. The circuit is from an 80's documentation. The diode is commonly used.
This circuit can be used as a shield for microcontrollers such as the Arduino. Frequency is given...
This PWM circuit was found in an American publication in 1978. It consists of a simple control that...
This circuit was found in 1968 General Electric documentation. The circuit uses components from the era...