We found this simple circuit in December 1975 Radio Electronics magazine. The integrated circuit is the 4009 CMOS, and the circuit works in both TTL and CMOS depending on the power supply.
S The purpose of this circuit, found in a 1975 publication, is to suppress the noise that occurs when...
This circuit generates signals for the calibration of IFI (Intermediate Frequency) of traditional AM and...
This dual-operator thermometer circuit was found in the September 1982 issue of Radio Electronics...