741 Filter (CB24265E)

The 1 kHz tuned filter shown uses a 741 op-amp. The components can be re-scaled to suit the desired frequency.

witching Noise Suppressor (CB13688E)
S The purpose of this circuit, found in a 1975 publication, is to suppress the noise that occurs when...
AM and FM IF calibrator (CB16767E)
This circuit generates signals for the calibration of IFI (Intermediate Frequency) of traditional AM and...
Electronic Thermometer 741 (CB24713E)
This dual-operator thermometer circuit was found in the September 1982 issue of Radio Electronics...