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US3852653A Expired / Lapsed US ⏱️ 0.0 years remaining

Voltage protection circuit for transistor regulators

Assignee: Hitachi Ltd
•
Filing: 1969-07-03
•
Granted: 1974-12-03
•
Expires: 1989-07-03
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Abstract

Abstract NECTED TO SAID BATTEY THROUGH SAID DIODE, ONE END OF SAID DIODE BEING CONNECTED TO SAID BATTERY AND THE OTHER END THEREOF BEING CONNECTED TO SAID INPUT TERMINAL OF SAID VOLTAGE DIVIDER, AND A RESISTOR CONNECTED BETWEEN SAID OUTPUT TERMINAL OF SAID MAIN RECTIFIER CIRCUIT AND SAID INPUT TERMINAL OF SAID VOLTAGE DIVIDER. 1. A VOLTAGE REGULATOR DEVICE OF A GENERATOR FOR VEHICLES COMPRSING: AN AC GENERATOR HAVING AN OUTPUT WINDING AND A FIELD WINDING, A RECTIFIER MEANS HAVING A MAIN RECTIFIER CIRCUIT AND AN AUXILIARY RECTIFER CIRCUIT, A BATTERY CONNECTED TO AN OUTPUT TERMINAL OF SAID MAIN RECTIFER CIRCUIT, A ZENER DIODE AND A DIODE, A SWITCHING CIRCUIT MEANS FOR CONTROLLING A FIELD CURRENT FLOWING THROUGH SAID FIELD WINDING IN RESPONSE TO CONDUCTION OF SAID ZENER DIODE, AND OUTPUT TERMINAL OF SAID SWITCHING CIRCUIT MEANS BEING CONNECTED TO AN OUTPUT TERMINAL OF SAID AUXILIARY RECTIFIER CIRCUIT THROUGH SAID FIELD WINDING, A VOLTAGE DIVIDER WHOSE OUTPUT TERMINAL IS CONNECTED TO AN INPUT TERMINAL OF SAID SWITCHING CIRCUIT MEANS THROUGH SAID ZENER DIODE AND WHOSE INPUT TERMINAL IS CON-

Inventors

  • 👤 H Minorikawa
  • 👤 K Kuroda
  • 👤 K Naoi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 19:10
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/60; H02J7/61

Claims Analysis

Total Claims: 0
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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) 1977-12-02 1978-06-03 1978-12-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-02 1982-06-03 1982-12-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-02 1986-06-03 1986-12-03 $7700.00 Window Closed / Lapsed

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