We found this circuit in the February 1983 issue of Radio Electronics magazine. The 4-digit circuit is based on dedicated integrated circuits of the time. The power supply is not shown.
Applying a high voltage to a mixed lamp can obtain a bluish light with a decorative effect. This...
We found this transistorized AM receiver of the regenerative type of excellent quality in a...
This circuit indicates the logical level of a CMOS circuit, extracting the power from the circuit...