Negative Voltage Regulator

Negative Voltage Regulator:

Connections for getting negative voltage regulator are shown in Fig. 2.116. An external PNP transistor, Q1 is connected. Resistances can be from 1 kΩ to 10 kΩ.

Negative Voltage Regulator

If magnitude of -V1 is less than 9V, connect Vcc+ and Vc to a positive supply such that Vcc+ to Vcc- is greater than 9V, for proper functioning of the IC.

Negative Voltage Regulator