This circuit was found in a Mallory documentation from 1968. The integrated circuit is of the time, unusual in our day. Input sensitivity is 20 mV for 2 W output.
In the figure we have a simple way to have a peak bargraph indicator. The amplifier is of the...
This amplifier of some watts with transistors in complementary symmetry NPN is from a Japanese...
This speed control for motors up to 500 mA was obtained in an old European documentation, but it...