Temperature compensated voltage regulator having beta compensating means

Claim 2

A temperature compensated voltage regulator circuit including beta compensating means, comprising: a first terminal for receiving a first bias potential; a second terminal for receiving a second bias potential; an output terminal at which a reference potential is developed; first resistive impedance means coupling said first terminal to said output terminal; a second resistive impedance means and a forward biased diode means forming a first series circuit coupling said output terminal to said second terminal; a third resistive impedance means, a first transistor device having a base, an emitter and a collector, and a fourth resistive impedance means forming a second series circuit coupling said output terminal to said second terminal; a fifth resistive impedance means coupling the base of said first transistor device to the junction of said second resistive impedance means and said diode means; and a second transistor device having a base coupled to the collector of said first transistor device, a collector coupled to said output terminal and an emitter coupled to said second terminal.

Claim 3

A temperature compensated voltage regulator circuit as recited in claim 1 wherein said fifth resistive impedance means has a resistive impedance Rx selected to satisfy the equation Rx Delta VBE3 + R3 Delta Ib3-R3 Delta Ib2/(R3/R4) Delta Ib2 where R3 is the resistive impedance of said third impedance means; R4 is the resistive impedance of said fourth impedance means; Delta VBE3 is the base-emitter forward voltage variation of said seconD transistor device; Delta Ib2 is the base current variation of said first transistor device; and Delta Ib3 is the base current variation of said second transistor device.

Claim 4

A temperature compensated voltage regulator circuit including beta compensating means comprising: a first terminal for receiving a first bias potential; a second terminal for receiving a second bias potential; an output terminal at which a reference potential is to be developed; a first resistive impedance means coupling said first terminal to said output terminal; a second resistive impedance means and a forward biased diode means forming a series circuit coupling said output terminal to said second terminal; a third resistive impedance means; a fourth and a fifth resistive impedance means; a first transistor device having a first base coupled to the junction of said second resistive impedance means and said diode means by said third resistive impedance means, a first collector coupled to said output terminal by said fourth resistive impedance means, and a first emitter coupled to said second terminal by said fifth resistive impedance means; and a second transistor device having a second base coupled to said first collector, a second collector coupled to said output terminal, and a second emitter coupled to said second terminal.

Claim 5

A temperature compensated voltage regulator circuit including beta compensating means comprising: a first terminal for receiving a first bias potential; a second terminal for receiving a second bias potential; an output terminal at which a reference potential is to be developed; a first resistive impedance means coupling said first terminal to said output terminal; a second resistive impedance means and a forward biased diode means forming a series circuit coupling said output terminal to said second terminal; a third resistive impedance means; a fourth and a fifth resistive impedance means; a first transistor device having a first base coupled to the junction of said second resistive impedance means and said diode means by said third resistive impedance means, a first collector coupled to said output terminal by said fourth resistive impedance means, and a first emitter coupled to said second terminal by said fifth resistive impedance means; and a second transistor device having a second base coupled to said first collector, a second collector coupled to said output terminal, and a second emitter coupled to said second terminal.

Claim 6

A temperature compensated voltage regulator circuit as recited in claim 3 wherein said fifth resistive impedance means has a resistive impedance Rx selected to satisfy the equation Rx Delta VBE3 + R3 Delta Ib3 - R3 Delta Ib2/(R3/R4) Delta Ib2 where R3 is the resistive impedance of said fourth impedance means; R4 is the resistive impedance of said fifth impedance means; Delta VBE3 is the base emitter forward voltage variation of said second transistor device; Delta Ib2 is the base current variation of said first transistor device; and Delta Ib3 is the base current variation of said second transistor device.

Claim 7

A temperature compensated voltage regulator circuit including beta compensating means, comprising: a first terminal for receiving a first bias potential; a second terminal for receiving a second bias terminal; a third terminal at which a first reference potential is to be developed; a fourth terminal at which a second reference potential is to be developed; a first resistive impedance means; a first transistor device having a first base coupled to said first terminal by said first resistive impedance means, a first collector coupled to said first terminal and a first emitter coupled to said third terminal; a second resistive impedance means; a second transistor device having a second base coupled to said first terminal by said second resistive impedance means, a second collector coupled to said third terminal and a second emitter coupled to said fourth terminal; a third resistive impedance means and a forward biased diode means forming a series circuit coupling said fourth terminal to said second terminal; a third transistor device having a third base coupled to said second base, a third collector coupled to said first base and a third emitter; a fourth resistive impedance means; a fifth resistive impedance means; a sixth resistive impedance means; a fourth transistor device having a fourth base coupled to the junction of said third impedance means and said diode means by said fifth impedance means, a fourth collector coupled to said third emitter by said fourth impedance means and a fourth emitter coupled to said second terminal by said sixth impedance means; and a fifth transitor device having a fifth base coupled to said fourth collector, a fifth collector coupled to said first terminal through said second resistive impedance means and a fifth emitter couPled to said second terminal.

Claim 8

A temperature compensated voltage regulator circuit including beta compensating means, comprising: a first terminal for receiving a first bias potential; a second terminal for receiving a second bias terminal; a third terminal at which a first reference potential is to be developed; a fourth terminal at which a second reference potential is to be developed; a first resistive impedance means; a first transistor device having a first base coupled to said first terminal by said first resistive impedance means, a first collector coupled to said first terminal and a first emitter coupled to said third terminal; a second resistive impedance means; a second transistor device having a second base coupled to said first terminal by said second resistive impedance means, a second collector coupled to said third terminal and a second emitter coupled to said fourth terminal; a third resistive impedance means and a forward biased diode means forming a series circuit coupling said fourth terminal to said second terminal; a third transistor device having a third base coupled to said second base, a third collector coupled to said first base and a third emitter; a fourth resistive impedance means; a fifth resistive impedance means; a sixth resistive impedance means; a fourth transistor device having a fourth base coupled to the junction of said third impedance means and said diode means by said fifth impedance means, a fourth collector coupled to said third emitter by said fourth impedance means and a fourth emitter coupled to said second terminal by said sixth impedance means; and a fifth transitor device having a fifth base coupled to said fourth collector, a fifth collector coupled to said first terminal through said second resistive impedance means and a fifth emitter couPled to said second terminal.

Claim 9

A temperature compensated voltage regulator circuit as recited in claim 5 wherein said fifth resistive impedance means has a resistive impedance Rx selected to satisfy the equation Rx Delta VBE3 + R3 Delta Ib3 - R3 Delta Ib2/(R3/R4) Delta Ib2 where R3 is the resistive impedance of said fourth impedance means; R4 is the resistive impedance of said sixth impedance means; Delta VBE3 is the base-emitter forward voltage variation of said fifth transistor device; Delta Ib2 is the base current variation of said fourth transistor device; and Delta Ib3 is the base current variation of said fifth transistor device.