This is the circuit of a European commercial amplifier. It was published in Radio Electronics magazine in September 1958 and has a power of 5 watts with good sound quality.
Suggested by Siliconix in documentation from the 90s, this amplifier has its gain digitally...
January 2017 - Pulse Electronics ER11 transformers with high insulation can be obtained from...
This circuit is from an American 80's documentation. The circuit indicates when the voltage of a 9 V...