Indicated for the protection of three-phase systems, this circuit was found in an American documentation of the 70's. The circuit can be implemented with modern components.
This circuit uses a NAND port to convert rectangular signals from 50 kHz to 1 MHz into triangular...
This circuit activates a relay producing pulses at regular intervals adjusted by the...
This oscillator is indicated for the adjustment of FI of FM radios, having its frequency...