This circuit was obtained from American documentation from 1966. It triggers when the two input voltages are within a pre-established range. The circuit can be mounted with modern transistors.
TR1 must be mounted on a heatsink in this circuit. Voltage output is 8.6 V but this value can be...
September 2016 – At Mouser is available the new N channel MOSFETs PMGD175NEX from NXP for currents of 950...
This circuit is from a 1965 Motorola manual. It can be implemented with a common 2N2646 and a 106...