This is an improved circuit from the earlier version also found in the April 1972 Radio Electronics magazine. The power transistors must be provided with heat sinks.
This circuit was taken from Maxim documentation from the 90s. The components are from the period....
Here we show how a Constant Current Source can be created in the Multisim Blue using a common BJT...
This circuit has several features, such as timing to activate and deactivate, in addition to a...