This circuit was obtained from the October 1977 Radio Electronics magazine. The meter is analog, and the maximum selected power is 100W.
This electronic roulette circuit with 10 numbers was found in a Popular Electronics from the 80s....
This circuit has a very high input impedance and a very low output impedance. We found it on a...
This circuit is from an English documentation from 1969. The circuit can be designed based on...