Found in the July 1994 Electronics Now magazine, this circuit drives a relay up to 12 V depending on the power supply. The transistor can be general purpose.
The input of this circuit remains in a high impedance state when the power of the LT6100 is cut...
This 80's circuit has an input resistance of the order of 880 M and gain 10, using operational...
These reset circuits when the power is turned on were found in an 80's EDN. The circuit also...