Three-point regulator comprising operational amplifiers with common input

Claim 2

A regulator for maintaining a desired condition including: a pair of regenerative threshold switches each including means for providing a threshold potential; an input circuit connected to both of said threshold switches for providing an input signal thereto causing said threshold switches to change state when said input signal exceeds the respective threshold potential; and circuit means including said means for providing said threshold potential for both of said threshold switches, said circuit means being operative to simultaneously adjust both threshold potentials.

Claim 3

The regulator according to claim 1 wherein said means for providing the threshold potentials for each of said threshold switches includes a resistor and wherein said circuit means includes said resistors connected in series so that a common current flow through said series connected resistors developes the threshold potentials for both of said threshold switches.

Claim 4

The regulator according to claim 1 further including a common feedback member for both of said threshold switches, said feedback member being connected to said means for providing threshold potentials for both of said switches to simultaneously affect both threshold potentials according to the potential appearing at the output of said threshold switches.

Claim 5

A regulator for maintaining a desired condition including: a pair of threshold switches, each said switch having a threshold voltage associated therewith and responsive to deviations from said desired condition which overcome sAid threshold voltage, thereby causing said threshold switch to change state regeneratively; a single means for simultaneously adjusting each said threshold voltage, and a common feedback network having a predetermined time behavior connected between the outputs of said threshold switches and the inputs thereof for controlling the characteristics of said regulator.

Claim 6

A regulator for maintaining a desired condition including: a pair of threshold switches, each said switch having a threshold voltage associated therewith and responsive to deviations from said desired condition which overcome sAid threshold voltage, thereby causing said threshold switch to change state regeneratively; a single means for simultaneously adjusting each said threshold voltage, and a common feedback network having a predetermined time behavior connected between the outputs of said threshold switches and the inputs thereof for controlling the characteristics of said regulator.

Claim 7

A three-point regulator for maintaining a desired condition including: an input circuit for providing an input signal related to deviations from said desired condition; two zero threshold switches having regenerative switching characteristics; biasing means associated with said switches for providing threshold voltages therefor so that when said input signal overcomes one said threshold voltages said switch associated therewith changes state regeneratively; a single adjustment means included in said biasing means for simultaneously adjusting said threshold voltages; and a common feedback network connected between the outputs of said zero threshold switches and the inputs thereof for controlling the characteristics of said regulator.

Claim 8

A three-point regulator for maintaining a desired condition including: an input circuit for providing an input signal related to deviations from said desired condition; two zero threshold switches having regenerative switching characteristics; biasing means associated with said switches for providing threshold voltages therefor so that when said input signal overcomes one said threshold voltages said switch associated therewith changes state regeneratively; a single adjustment means included in said biasing means for simultaneously adjusting said threshold voltages; and a common feedback network connected between the outputs of said zero threshold switches and the inputs thereof for controlling the characteristics of said regulator.

Claim 9

A regulator according to claim 5 in which said threshold switches are biased off by said threshold voltages in the absence of an input signal which overcomes one of said threshold voltages and wherein said threshold voltages are symmetrically adjustable by said single adjustment means.

Claim 10

A three-point regulator for maintaining a desired condition including; an input circuit for providing an input signal related to deviations from said desired condition; two zero threshold switches having regenerative switching characteristics; biasing means associated with said switches for providing threshold voltages therefor so that when said input signal overcomes one of said threshold voltages said switch associated therewith changes state regeneratively; said biasing means including a pair of resistors connected in series combination, said combination connected between the inputs of said switches and to a variable resistive element so that current flows in series through said pair of resistors and said variable element, said current flow through said resistors establishing said threshold voltages, said current flow being controlled by said variable element; and a common feedback network connected between the outputs of said switches and said pair of resistors for controlling the characteristics of said regulator.

Claim 11

A three-point regulator for maintaining a desired condition including; an input circuit for providing an input signal related to deviations from said desired condition; two zero threshold switches having regenerative switching characteristics; biasing means associated with said switches for providing threshold voltages therefor so that when said input signal overcomes one of said threshold voltages said switch associated therewith changes state regeneratively; said biasing means including a pair of resistors connected in series combination, said combination connected between the inputs of said switches and to a variable resistive element so that current flows in series through said pair of resistors and said variable element, said current flow through said resistors establishing said threshold voltages, said current flow being controlled by said variable element; and a common feedback network connected between the outputs of said switches and said pair of resistors for controlling the characteristics of said regulator.