We found this circuit in a Radio Electronics magazine from December 1969. The circuit uses a low-power MOSFET that is not very common today.
An OR gate can be implemented with an LM3900 transconductance operational amplifier. The circuit is...
This circuit was obtained in an old American documentation, remembering that the 566 is the double...
This circuit has a consumption of only 3.7 mA and can be installed in vehicles or objects for...