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.
The circuit bellow uses two NPN transistor to drive heavy loads up to some amperes. The maximum...
The gain of this amplifier is given by the 120k resistor, which can be changed depending on the...
Here we show how a Constant Current Source can be created in the Multisim Blue using a common BJT...