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Method and apparatus for monitoring armature position in direct-current solenoids 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01B-007/14
  • F16K-037/00
  • G01R-027/16
출원번호 US-0093846 (1993-07-20)
발명자 / 주소
  • Moyers John C. (Oak Ridge TN) Haynes Howard D. (Knoxville TN)
출원인 / 주소
  • Martin Marietta Energy Systems, Inc. (Oak Ridge TN 02)
인용정보 피인용 횟수 : 72  인용 특허 : 0

초록 ▼

A method for determining the position of an armature of a dc-powered solenoid. Electrical circuitry is provided to introduce a small alternating current flow through the coil. As a result, the impedance and resistance of the solenoid coil can be measured to provide information indicative of the arma

대표청구항 ▼

An apparatus for monitoring operation of a d.c. solenoid having a coil and an armature movable through a stroke length between operative positions in response to energization and deenergization of the coil, the apparatus comprising: an a.c. current source selectively coupled to a power circuit of th

이 특허를 인용한 특허 (72)

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