This 2-tube amplifier was found in a Japanese publication of 1964. The circuit has excellent sound quality. The power supply is not given and must provide a voltage of 300 V.
Hybrid PWM controllers with integrated 8-bit microcontrollers for supervision and management can...
This power supply can be used to power circuits that do not require regulated voltages that can be...
This low input impedance amplifier stage was found in a 1963 documentation. The circuit employs a...