This circuit from the 90s has RIAA equalization with a gain of 35 dB at 1 kHz. The circuit has an input sensitivity of 2.2 mV for an output of 100 mV.
The indicated circuit performs a slow charge of 12 V batteries maintaining a constant current of...
Found in a 73 magazine from the 1980s, this circuit generates signals from 3.2 to 22 MHz. FETs can be...
In the figure we have a three-phase AC motor control for voltages up to 600 V or 1200 V depending on...