We found this circuit in an American documentation from the 80s. The integrated circuits are operational amplifiers of the time. We can test modern comparators like the LM339.
This regulator provides a regulated output voltage of 48 V under a current of up to 1 A from a 60...
The components of this filter are calculated using conventional formulas (see mathematics section of...
This well-crafted twin-T oscillator configuration for low frequencies using the 741 was found in...