US3903467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for rapid excitation of step motor windings
Assignee: Jenoptik AG
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Filing: 1974-06-27
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Granted: 1975-09-02
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Expires: 1994-06-27
Abstract
Abstract In a device for rapid control of a step motor excitation winding, said winding is connected by a transistor via an RCelement to a voltage source. Simultaneously the winding is connected via a decoupling diode with a second voltage source. The cathode of a thyristor, which is connected in parallel to the resistance of the RC-element is also coupled to the windings and is controlled in dependence of the induction voltage of the winding and the voltage of the capacity of the RC-element.
Inventors
- 👤 Lutz Eckardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:53
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18; H01F7/1805; H01F7/1816; H02; H02P; H02P8/00; H02P8/14; H02P8/16; H02P8/165; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/64; H03K3/00; H03K3/02; H03K3/53; H03K3/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A device for controlling the excitation winding of a step motor by different voltages, comprising a first voltage source, a second voltage source, a thyristor, a first diode said first voltage source being connected to the anode of said thyristor, said second voltage source being connected to the anode of said first diode, the cathode of said first diode being connected to the cathode of said thyristor, a first resistor, being connected in parallel to the cathodeanode path of said thyristor, a capacitor, grounding the cathode of said thyristor, a second diode, a Zener diode, a transistor, one terminal of the step motor winding being connected to the cathode of said thyristor and to the cathode of said second diode, the other terminal being connected to the cathode of said Zener diode and to the collector of said transistor, the emitter of said transistor being grounded, a second resistor, connecting the gate electrode of said thyristor with the cathode of said Zener diode, the anode of said second diode being connected to the anode of said Zener diode, a square-wave voltage, being applied to the base of said transistor.
Claim 2
Independent Claim
189 words
A device for controlling the excitation winding of a step motor by different voltages, comprising a first voltage source, a second voltage source, a thyristor, a first diode said first voltage source being connected to the anode of said thyristor, said second voltage source being connected to the anode of said first diode, the cathode of said first diode being connected to the cathode of said thyristor, a first resistor, being connected in parallel to the cathodeanode path of said thyristor, a capacitor, grounding the cathode of said thyristor, a second diode, a Zener diode, a transistor, one terminal of the step motor winding being connected to the cathode of said thyristor and to the cathode of said second diode, the other terminal being connected to the cathode of said Zener diode and to the collector of said transistor, the emitter of said transistor being grounded, a second resistor, connecting the gate electrode of said thyristor with the cathode of said Zener diode, the anode of said second diode being connected to the anode of said Zener diode, a square-wave voltage, being applied to the base of said transistor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |