Back to results
US 4,404,477 AGranted
Detection circuit and structure therefor
AssigneeSupertex, Inc.
InventorRobert L. Chao
Life of this patent
Estimating the term…
Abstract
Improved circuitry for providing a stable reference voltage in complementary transistor circuitry. The circuitry comprises a pair of complementary transistors and a pair of zener diodes interconnected to reduce reference voltage variation with respect to supply voltages.
Claims3
A reference voltage circuit, comprising, in combination;
- first and second voltage supply terminals;
- a first zener diode and a first field effect transistor serially coupled, in the order recited, between said first and second voltage supply terminals;
- a second field effect transistor and a second zener diode serially coupled, in the order recited, between said first and second voltage supply terminals, said second transistor being complementary to said first transistor and having a control electrode;
- said control electrode being coupled to said first zener diode and said first transistor;
- and
- output means comprising third and fourth serially connected field effect transistors coupled to said second transistor and across said second zener diode for providing said reference voltage at a point between said third and fourth transistors.
3 more elements
Dependencies are inferred from the claim text.