Found in a Popular Electronics from the 80's, this circuit simulates the equivalent card game. The circuit is CMOS and can be supplied with voltages from 6 to 12 V.
This high voltage regulator uses only two passive components. The output is 100 V, but replacing...
This circuit was obtained in a magazine for radio amateurs 73 of the 90s. The circuit is based on...
This circuit is from an old operating manual and can be implemented with operationals types that...