This circuit was found in a 1966 General Electric documentation. It makes use of direct contact water sensors and therefore requires an isolation or low voltage relay drive transformer.
This low-power intercom can be powered by solar cells. The circuit is two-way, with an integrated of the...
The advantage of this circuit lies in the fact that it does not need a negative source to generate...
The circuit shown in the figure can be used on a data transfer bus using an appropriate family...