Institute Newton C. Braga

Circuit Bench

LED Constant current source 2 (CB20436E)
In the figure we have a variation of the previous circuit with only one transistor, using the...
Car Battery Checker (CB9529E)
We found this circuit in an American documentation from the 90s. Through an LED it indicates the...
Battery and Alternator Monitor (CB26311E)
This automotive grade circuit was found in a 1991 Electronics Hobbyist. The transistors are...