US3919606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor driving circuit for movable element
Assignee: Seikosha KK
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Filing: 1974-03-05
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Granted: 1975-11-11
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Expires: 1994-03-05
Abstract
Abstract In a device wherein a movable element, such as a rotor or a vibrator, formed with magnetic poles, is driven by a transistor circuit with a detecting coil and a driving coil connected thereto, a highly stable driving circuit for the movable element wherein a charging-and-discharging circuits including a directive amplitude limiter and a capacitor is provided on the input side of the transistor circuit.
Inventors
- 👤 Koji Nemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/14; H02K; H02K29/00; H02K29/06; H02K29/12; H02K33/00; H02K33/02; H02K33/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
212 words
A transistor driving device for a movable element comprising: a driven movable element having magnetic poles of opposite polarity spaced thereon; a detecting coil for detecting the movement of said movable element with magnetic poles thereon and having a detection voltage induced therein in response to the detection of said movement; a driving coil electromagnetically coupled to said movable element for driving said movable element; a first charging circuit comprising both an amplitude limiter and an impedance comprising a capacitor charged by a half cycle of the detection voltage induced in said detecting coil; a second charging circuit comprising both another amplitude limiter and another impedance comprising another capacitor charged by said half cycle of said detection voltage; a first discharging circuit discharging a stored charge of the capacitor in said first charging circuit during a half cycle succeeding the firstmentioned half cycle; a second discharging circuit discharging a stored charge of the capacitor in said second charging circuit during the second half cycle of said detection voltage; a transistor circuit having an output connected to said driving coil and an input comprising said first charging and discharging circuits and said second charging and discharging circuits; a source of power connected to said driving coil and said input of said transistor circuit.
Claim 2
Dependent Claim
212 words
A transistor driving device for a movable element comprising: a driven movable element having magnetic poles of opposite polarity spaced thereon; a detecting coil for detecting the movement of said movable element with magnetic poles thereon and having a detection voltage induced therein in response to the detection of said movement; a driving coil electromagnetically coupled to said movable element for driving said movable element; a first charging circuit comprising both an amplitude limiter and an impedance comprising a capacitor charged by a half cycle of the detection voltage induced in said detecting coil; a second charging circuit comprising both another amplitude limiter and another impedance comprising another capacitor charged by said half cycle of said detection voltage; a first discharging circuit discharging a stored charge of the capacitor in said first charging circuit during a half cycle succeeding the firstmentioned half cycle; a second discharging circuit discharging a stored charge of the capacitor in said second charging circuit during the second half cycle of said detection voltage; a transistor circuit having an output connected to said driving coil and an input comprising said first charging and discharging circuits and said second charging and discharging circuits; a source of power connected to said driving coil and said input of said transistor circuit.
Claim 3
Dependent Claim
38 words
A transistor driving device for a movable element according to claim 1, further including a synchronizing transistor circuit synchronized by an external synchronizing signal and connected for rendering the first-mentioned transistor circuit synchronized with the external synchronizing signal.
Claim 4
Dependent Claim
129 words
A transistor driving device for a movable element comprising: a movable element having magnetic poles of opposite polarity spaced thereon; a detecting coil for detecting movement of said movable element with magnetic poles thereon and developing a detection voltage in response to said movement; a driving coil electromagnetically coupled to said movable element for driving said movable element; a transistor having a collector connected to said driving coil; an amplitude limiter and an impedance comprising a capacitor and another impedance comprising another capacitor and another amplitude limiter connecting an emitter of said transistor to the base thereof; and means connecting said detecting coil between two junction points with said impedances and amplitude limiters; and a source of power connected to said driving coil and said emitter of said transistor.
Claim 5
Dependent Claim
129 words
A transistor driving device for a movable element comprising: a movable element having magnetic poles of opposite polarity spaced thereon; a detecting coil for detecting movement of said movable element with magnetic poles thereon and developing a detection voltage in response to said movement; a driving coil electromagnetically coupled to said movable element for driving said movable element; a transistor having a collector connected to said driving coil; an amplitude limiter and an impedance comprising a capacitor and another impedance comprising another capacitor and another amplitude limiter connecting an emitter of said transistor to the base thereof; and means connecting said detecting coil between two junction points with said impedances and amplitude limiters; and a source of power connected to said driving coil and said emitter of said transistor.
Claim 6
Dependent Claim
36 words
A transistor driving device for a movable element according to claim 3, in which each of said impedances consists of a capacitor and a resistor connected in parallel in series circuit with a corresponding amplitude limiter.
Claim 7
Dependent Claim
35 words
A transistor driving device for a movable element according to claim 3, further including a synchronizing transistor circuit synchronized with an external synchronizing signal connected rendering the first-mentioned transistor synchronized with said external synchronizing signal.
Claim 8
Dependent Claim
25 words
A transistor driving device for a movable element according to claim 5, further including a resistor connected in series with one of said amplitude limiters.
Claim 9
Dependent Claim
25 words
A transistor driving device for a movable element according to claim 5, further including a resistor connected in series with both of said amplitude limiters.
Claim 10
Dependent Claim
143 words
A transistor driving device for a movable element comprising: a movable element having magnetic poles of opposite polarity spaced thereon; a detecting coil which detects movement Of said movable element with magnetic poles thereon for developing a detection voltage in response to the movement detected; a driving coil electromagnetically coupled to said movable element for driving said movable element; a transistor having a collector connected to said driving coil; an amplitude limiter and an impedance comprising a capacitor connecting an emitter of said transistor to a base thereof, and another impedance comprising another capacitor and said detecting coil connecting said emitter to the base; another amplitude limiter connected between a junction point of said impedance and amplitude limiter and a junction point of said another impedance and said detecting coil; and a source of power connected to said driving coil and said emitter.
Claim 11
Dependent Claim
143 words
A transistor driving device for a movable element comprising: a movable element having magnetic poles of opposite polarity spaced thereon; a detecting coil which detects movement Of said movable element with magnetic poles thereon for developing a detection voltage in response to the movement detected; a driving coil electromagnetically coupled to said movable element for driving said movable element; a transistor having a collector connected to said driving coil; an amplitude limiter and an impedance comprising a capacitor connecting an emitter of said transistor to a base thereof, and another impedance comprising another capacitor and said detecting coil connecting said emitter to the base; another amplitude limiter connected between a junction point of said impedance and amplitude limiter and a junction point of said another impedance and said detecting coil; and a source of power connected to said driving coil and said emitter.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |