Institute Newton C. Braga

Circuit Bench

Power Supply and Battery Charger (CB15851E)
This circuit can be used both as a power source and as a battery charger. The resistor R1 serves as...
Simple zener diode test (CB20740E)
This circuit uses a fixed source that has a higher voltage than the zener diode that will be...
PNP Constant Current Source (CB1242E)
The load current can be adjusted up to about 1 A. The transistor can be TIP32 or TIP42. The...