This 80's circuit has been winning. It is a 1 000 gain sample and hold circuit and an offset current setting. The configuration can be adapted to operate with modern equivalent components.
This circuit can control a heating element with a current of up to 5 A. The integrated circuit must...
This circuit was found in an American documentation for radio amateurs of the 80's. The...
The circuit shown in the figure uses a programmable unijunction transistor (PUT) of the BRY39 type...