We found this tube receiver in a 1950s Japanese publication. The circuit uses 5 tubes and has an RF amplifier stage for greater sensitivity. The power supply is not shown on the circuit.
This circuit takes advantage of the temperature variation of the component with the air flow that...
This circuit was obtained from an American 80's documentation. The operational ones can be...
We find this circuit in a 2005 Linear Technology manual. The circuit applies to small DC motors...