Multi-mode circuit

Details Multi-mode circuit Multi-mode circuit

1980-06-30

1982-02-23

Pitts, Harold I.

Communications: electrical

Continuously variable indicating

With meter reading

307571, H03K 1160, H04Q 300

Patent

active

043171109

ABSTRACT:
The conduction path of a first transistor means of first conductivity type is connected between a first point of operating potential and an output point. The conduction paths of second and third transistors of second conductivity type are connected in series between the output point and a second point of operating potential. An input signal is applied to the gate electrode of the third transistor while a control voltage is applied to the gate electrodes of the first and second transistors. Different values of control voltage are applied to operate the circuit in different modes. For a control voltage equal to the voltage at the first point the circuit can function to clamp the output to the second point. For a control voltage equal to the voltage at the second point the circuit can function to couple the output to the first point. For a control voltage intermediate the voltage at the first and second points, the circuit functions as a level shift inverter with division of the output voltage across the conduction paths of the second and third transistors.

REFERENCES:
patent: B459425 (1975-01-01), Oguey
patent: 3676700 (1972-07-01), Buchanan
patent: 3728556 (1973-04-01), Arnell
patent: 3801831 (1974-04-01), Dame
patent: 3916430 (1975-10-01), Heuner
patent: 3942043 (1976-03-01), Sirocka
patent: 4039862 (1977-08-01), Dingwall

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