This amplifier, whose mounting on a printed circuit board was described in Radio Electronics of October 1960, has 35 W of power. The power supply uses a transformer and a set of 5 tubes.
This circuit is from Mullard documentation from 1969. Transistors support current equivalents. Output...
This circuit or practical idea comes from a time when cheap solar cells were not available (1992). What is...
From an input signal, and using an unusual current source, this circuit generates a ramp, that is, a...