This shield circuit for lamps and other charges was found in a Popular Electronics from the 90's. The MOSFET admits equivalent according to the charging current.
This simple calibration circuit consists of a crystal oscillator that generates an accurate 100 kHz...
This circuit generates 5 notes in sequence, which are programmed in the connections of the 4017...
This circuit makes use of comparators and common operational amplifiers, having been found in...