US3893017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator with bipolar transistors
Assignee: Texas Instruments Inc
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Filing: 1974-02-20
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Granted: 1975-07-01
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Expires: 1994-02-20
Abstract
Abstract A reference bias regulator utilizes both NPN and PNP transistors supplying a reference bias for constant current sources to be used as load devices in low voltage integrated circuits thus eliminating the necessity to use large ohmic value external resistors. The regulator effectively maintains a current independent of source and load variation.
Inventors
- 👤 Clark R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:08
CPC Classifications
G; G04; G04G; G04G99/00; G04C; G04C10/00; G04C9/00; G04G17/00; G04G17/02; G04G19/00; G04G5/00; G04G5/04; G04G9/00; G04G9/0023; G04G9/0029; G04G9/0047; G04G9/08; G04G9/12; G04G9/126; H; H03; H03K; H03K3/00; H03K3/01; H03K3/012; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/289; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
241 words
A reference bias regulator for a current source comprising: a. a reference portion having a first bipolar transistor means of one type connected in emitter-collector series with a reference resistor between first and second reference nodes; b. a differential regulator portion having second and third bipolar transistor means of said one type and fourth and fifth bipolar transistor means of the opposite type, resistance means and capacitance means, the bases of said transistor means of like types being connected together, the emitters of said transistor means of said one type being connected together and through said resistance means to the first reference node and the emitter of said fourth transistor means being connected to the second reference node, the collectors of said second and fourth transistor means being connected together and to one terminal of said capacitance means; the collectors of said third and fifth transistor means being connected together and to the bases of said fourth and fifth transistor means and to the other terminal of said capacitance means and the emitter of said fifth transistor means being connected to the junction of said reference resistor and said first transistor means; and c. a drive portion having a sixth bipolar transistor means of said opposite type, the base of said sixth transistor means being connected to the collector of said second and fourth transistor means and the emitter of said sixth transistor means being connected to said second reference node.
Claim 2
Dependent Claim
241 words
A reference bias regulator for a current source comprising: a. a reference portion having a first bipolar transistor means of one type connected in emitter-collector series with a reference resistor between first and second reference nodes; b. a differential regulator portion having second and third bipolar transistor means of said one type and fourth and fifth bipolar transistor means of the opposite type, resistance means and capacitance means, the bases of said transistor means of like types being connected together, the emitters of said transistor means of said one type being connected together and through said resistance means to the first reference node and the emitter of said fourth transistor means being connected to the second reference node, the collectors of said second and fourth transistor means being connected together and to one terminal of said capacitance means; the collectors of said third and fifth transistor means being connected together and to the bases of said fourth and fifth transistor means and to the other terminal of said capacitance means and the emitter of said fifth transistor means being connected to the junction of said reference resistor and said first transistor means; and c. a drive portion having a sixth bipolar transistor means of said opposite type, the base of said sixth transistor means being connected to the collector of said second and fourth transistor means and the emitter of said sixth transistor means being connected to said second reference node.
Claim 3
Dependent Claim
44 words
The regulator as defined in claim 1 wherein said second, third, fourth and fifth transistor means are so arranged and constructed that the collector current of said second transistor means is greater than about fifteen times the collector current of said third transistor means.
Claim 4
Dependent Claim
32 words
The regulator as defined in claim 2 further including a start portion comprising further bipolar transistor means connected to said drive portion and arranged to insure initial start up of said regulator.
Claim 5
Dependent Claim
221 words
The regulator as defined in claim 1 further having a slave regulator portion comprising first, second, third and fourth additional bipolar transistor means of said one type with their emitters connected to one terminal of a supply voltage, fifth, sixth, seventh, eighth and ninth additional bipolar transistor means of said other type with their emitters connected to the other terminal Of a supply voltage, and additional capacitance means; the bases of said fifth, sixth and seventh additional transistor means and the collector of said fifth additional transistor means being connected to the collector of said first additional transistor means; the base of said first additional transistor means being connected to the base of said first transistor means; the bases of said second and third additional transistor means being connected to the collectors of said second and sixth additional transistor means; the collectors of said fourth and seventh additional transistor means being connected to the base of said eighth additional transistor means and to one terminal of said additional capacitance means; the collector of said third and eighth additional transistor means being connected to the base of said ninth additional transistor means and to the other terminal of said additional capacitance means; and the collector of said ninth additional transistor means being connected to the base of said fourth additional transistor means.
Claim 6
Dependent Claim
85 words
A regulator as defined in claim 4 wherein said second, third, fourth and fifth transistor means are so arranged and constructed that the collector current of said second transistor means is greater than about fifteen times the collector current of said third transistor means and wherein said first transistor means and said first additional transistor means are so arranged and constructed that the collector current of said first transistor means is more than about three times the collector current of said first additional transistor means.
Claim 7
Dependent Claim
32 words
The regulator as defined in claim 5 further including a start portion comprising further bipolar transistor means connected to said drive portion and arranged to assure initial start up of said regulator.
Claim 8
Dependent Claim
238 words
In a reference bias regulator for constant current sources wherein a master regulator output is taken from the base of a reference bipolar transistor means of one type connected in emitter-collector series with a reference resistor between the terminals of a voltage source, a slave regulator comprising: first, second, third and furth bipolar transistor means of said one type with their emitters connected to one terminal of the supply voltage source, fifth, sixth, seventh, eighth and ninth bipolar transistor means of said other type with their emitters connected to the other terminal of said supply voltage source and capacitance means; the bases of said fifth, sixth and seventh transistor means and the collector of said fifth transistor means being connected to the collector of said first transistor means, the base of said first transistor means being connected to the base of said reference transistor, the bases of said second and third transistor means being connected to the collectors of said second and sixth transistor means, the collectors of said fourth and seventh transistor means being connected to the base of said eighth transistor means and to one terminal of said capacitance means, the collectors of said third and eighth transistor means being connected to the base of said ninth transistor means and to the other terminal of said capacitance means, and the collector of said ninth transistor means being connected to the base of said fourth transistor means.
Claim 9
Dependent Claim
238 words
In a reference bias regulator for constant current sources wherein a master regulator output is taken from the base of a reference bipolar transistor means of one type connected in emitter-collector series with a reference resistor between the terminals of a voltage source, a slave regulator comprising: first, second, third and furth bipolar transistor means of said one type with their emitters connected to one terminal of the supply voltage source, fifth, sixth, seventh, eighth and ninth bipolar transistor means of said other type with their emitters connected to the other terminal of said supply voltage source and capacitance means; the bases of said fifth, sixth and seventh transistor means and the collector of said fifth transistor means being connected to the collector of said first transistor means, the base of said first transistor means being connected to the base of said reference transistor, the bases of said second and third transistor means being connected to the collectors of said second and sixth transistor means, the collectors of said fourth and seventh transistor means being connected to the base of said eighth transistor means and to one terminal of said capacitance means, the collectors of said third and eighth transistor means being connected to the base of said ninth transistor means and to the other terminal of said capacitance means, and the collector of said ninth transistor means being connected to the base of said fourth transistor means.
Claim 10
Dependent Claim
35 words
A regulator as defined in claim 7 wherein said first transistor means is so arranged and constructed as to have a collector current less than about one-third, the collector current of said reference transistor means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |