Found in a Popular Electronics from the 80's, this circuit makes use of a time integrated to control a relay in a timed way. R2 determines the activation time.
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...