US3663947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator arrangement for generators with permanent magnetic excitation
Assignee: Robert Bosch GmbH
•
Filing: 1970-06-25
•
Granted: 1972-05-16
•
Expires: 1990-06-25
Abstract
Abstract A voltage regulating arrangement in which an alternating current generator with means for permanent magnetic excitation, has two output windings magnetically intercoupled. The junction between the two windings is connected to ground potential, whereas the remaining terminals of the output winding are connected to two rectifying circuits. A triac is connected in parallel with one of the windings, and one of the rectifying circuits provides a negative control voltage which is applied to the triac through a control circuit containing complementary transistors. The rectifying circuits provide a DC output voltage, and the triac is switched to the conducting state through the negative control voltage, whenever the rectified DC output voltage exceeds a predetermined level.
Inventors
- 👤 Peter Pfefeer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:11
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1469; H02J7/1492; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/92
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
188 words
A voltage regulating arrangement comprising, in combination, an alternating current generator; first rectifying means connected to the output terminals of said generator and providing a DC voltage output; bi-directional thyristor means connectable in parallel with the alternating output of said generator; second rectifyIng means connected to said output terminals of said generator and providing a negative voltage; control means for applying said negative voltage to the control electrode of said bi-directional thyristor for switching said thyristor to the conducting state when said DC voltage output exceeds a predetermined value; two complementary transistors in said control means; voltage reference means connected to a first one of said transistors for providing a control signal for the second one of said transistors dependent upon the magnitude of said DC voltage output, the emitter-collector path of said second transistor being connected between the output of said second rectifying means and the control electrode of said thyristor; and means with voltage breakdown characteristics connected in parallel with the emitter-collector path of said first transistor for providing an undelayed switching signal for said second transistor upon substantially rapid rise of said DC voltage output.
Claim 2
Dependent Claim
188 words
A voltage regulating arrangement comprising, in combination, an alternating current generator; first rectifying means connected to the output terminals of said generator and providing a DC voltage output; bi-directional thyristor means connectable in parallel with the alternating output of said generator; second rectifyIng means connected to said output terminals of said generator and providing a negative voltage; control means for applying said negative voltage to the control electrode of said bi-directional thyristor for switching said thyristor to the conducting state when said DC voltage output exceeds a predetermined value; two complementary transistors in said control means; voltage reference means connected to a first one of said transistors for providing a control signal for the second one of said transistors dependent upon the magnitude of said DC voltage output, the emitter-collector path of said second transistor being connected between the output of said second rectifying means and the control electrode of said thyristor; and means with voltage breakdown characteristics connected in parallel with the emitter-collector path of said first transistor for providing an undelayed switching signal for said second transistor upon substantially rapid rise of said DC voltage output.
Claim 3
Dependent Claim
31 words
The voltage regulating arrangement as defined in claim 1 wherein said generator includes two magnetically coupled output windings, said thyristor means being connected in parallel with one of said two windings.
Claim 4
Dependent Claim
16 words
The voltage regulating arrangement as defined in claim 1 wherein said bi-directional thyristor comprises a triac.
Claim 5
Dependent Claim
29 words
The voltage regulating arrangement as defined in claim 1 including two output windings in said generator, said output windings and said first rectifying means comprising a center tap rectifier.
Claim 6
Dependent Claim
60 words
The voltage regulating arrangement as defined in claim 4 wherein said second rectifying means and said output windings comprise a further center-tapped rectifier, one of said rectifying means rectifying the positive half-wave of the alternating voltage from one of said output windings and the other rectifying means rectifying the negative halfwave of said alternating voltage from said one output winding.
Claim 7
Dependent Claim
18 words
The voltage regulating arrangement as defined in claim 1 wherein said voltage reference means comprises a zener diode.
Claim 8
Dependent Claim
20 words
The voltage regulating arrangement as defined in claim 1 wherein said means with voltage breakdown characteristics comprises a zener diode.
Claim 9
Dependent Claim
65 words
The voltage regulating arrangement as defined in claim 1 including voltage dividing means in said control means and connected to said DC voltage output for measuring the magnitude of said Dc voltage output; photoresistor means in said voltage divider means; optoelectronic means connected to said DC voltage output and illuminating said photoresistor means with light intensity dependent upon the magnitude of said DC voltage output.
Claim 10
Dependent Claim
24 words
The voltage regulating arrangement as defined in claim 8 including incandescent lamp means in said optoelectronic means and in proximity of said photoresistor means.
Claim 11
Dependent Claim
30 words
The voltage regulating arrangement as defined in claim 9 wherein said incandescent lamp means has a red glowing filament when in the operative state, i. e. at its nominal voltage.
Claim 12
Dependent Claim
55 words
The voltage regulating arrangement as defined in claim 2 wherein the junction of said two output windings of said generator provide the negative terminal of said DC voltage output and the positive terminal of an auxiliary voltage source, said thyristor means being connected between said junction and the output terminal of one of said windings.
Claim 13
Dependent Claim
18 words
The voltage regulating arrangement as defined in claim 1 including permanent magnetic excitation means for exciting said generator.
Claim 14
Dependent Claim
18 words
The voltage regulating arrangement as defined in claim 1 including battery means connected across said DC voltage output.
References Cited (Backward Citations)
US3059169A
Cited
US3476993A
Cited
US3260917A
Cited
US3456182A
Cited
US3475677A
Cited
US3530366A
Cited
US3524123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |