Voltage regulator for battery power source
Abstract
A bipolar transistor in series with the battery as the control element also in series with a zener diode and a resistor is used to maintain a predetermined voltage until the battery voltage decays to very nearly the predetermined voltage. A field effect transistor between the base of the bipolar transistor and a junction between the zener diode and resistor regulates base current of the bipolar transistor, thereby regulating the conductivity of the bipolar transistor for control of the output voltage.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- April 1979
- Bibcode:
- 1979nasa.reptS....B
- Keywords:
-
- Bipolar Transistors;
- Electric Batteries;
- Voltage Regulators;
- Field Effect Transistors;
- Gates (Circuits);
- Patents;
- Resistors;
- Electronics and Electrical Engineering