15W Valve Modulator Amplifier circuit
Posted on May 3, 2017 10557
The deformation of the amplifier is approximately 8%. The T1 transformer has a primary impedance of 10KΩ, and the transformer ratio is about 1. Naturally, the transformer core is estimated at 15W. The power supply uses the 5U4 lamp as a rectifier. The power adapter has a primary 220V and secondary 2 x 300V for 150mA, 6.3V for 2A and 5V for 2A. The smoothing filter choke is 10H for 15mA. It is possible with this modulator to form from the protective grid a transmitter of up to 100 Watts, with a modulation depth of 90% to 100%.