Transient protected isolator output stage

Details Transient protected isolator output stage Transient protected isolator output stage

1990-09-18

1991-11-19

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323275, 323277, 323908, G05F 330, G05F 1565

Patent

active

050669010

ABSTRACT:
An automotive voltage regulator is disclosed to have plural regulated outputs using a transient protected isolator output stage (TPIOS) that prevents a system fault condition on any one output from adversely affecting the other outputs. In an automotive environment employing a nominal 14-volt supply, an individual output can be taken from -4 to +26 volts without causing damage or having any significant reaction on the non-faulted outputs. The circuit employs a relatively small NPN output pass transistor and, therefore, requires a relatively low value stabilizing bypass capacitor.

REFERENCES:
patent: 3527997 (1970-09-01), Nercessian
patent: 3796943 (1974-03-01), Nelson et al.
patent: 4731574 (1988-03-01), Melbert

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