This general-purpose transistor audio amplifier was found in the March 1990 issue of Radio Electronics magazine. The power supply must be dual.
This charger for currents up to 100 mA was found in a 1980 publication. The transistor could be...
In the figure we have a high stability voltage reference, providing a voltage of 10 V at the...
This circuit is from old documentation, but can be adapted to use modern components. Power...