This 50 W amplifier was found in the November 1983 Radio Electronics issue. The circuit is suitable for the case and includes a preamp with tone control using off-the-shelf components.
This is a typical amplifier stage with 1 old general purpose silicon transistor. The circuit is...
We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the...
This circuit does not establish, immediately after connection, the voltage of 15 V in the load. The...