This is an amplifier circuit intended for modulating transmitters. The 5-tube circuit is from an American manual from 1947. The power supply uses a transformer.
High quality sound can be obtained from this transistor amplifier. The output transistors must be...
This is a conventional triac dimmer configuration found in a 1986 documentation. The triac used is a...
With the use of a cascade transistor, the dynamic response of a phototransistor can be increased, as...