The figure shows how to use CMOS inverters as amplifiers. The circuit is from a Radio Electronics from April 1984. The supply voltage can be between 3 and 12 V.
This circuit is from an 80's documentation. The transistor can be any general purpose PNP and the...
This powerful pushbutton uses a power MOSFET. We found it in a Popular Electronics magazine from...
This shield circuit for lamps and other charges was found in a Popular Electronics from the 90's....