GB1511931A - Switching circuit for an electromagnet - Google Patents

Switching circuit for an electromagnet

Info

Publication number
GB1511931A
GB1511931A GB310576A GB310576A GB1511931A GB 1511931 A GB1511931 A GB 1511931A GB 310576 A GB310576 A GB 310576A GB 310576 A GB310576 A GB 310576A GB 1511931 A GB1511931 A GB 1511931A
Authority
GB
United Kingdom
Prior art keywords
current
switching
electromagnet
jan
logic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB310576A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Instron Holdings Ltd
Original Assignee
Instron Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Instron Holdings Ltd filed Critical Instron Holdings Ltd
Priority to GB310576A priority Critical patent/GB1511931A/en
Priority to DE19772703129 priority patent/DE2703129A1/en
Priority to FR7702138A priority patent/FR2339944A1/en
Priority to JP821577A priority patent/JPS5293962A/en
Publication of GB1511931A publication Critical patent/GB1511931A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/064—Circuit arrangements for actuating electromagnets

Abstract

1511931 Switching circuit INSTRON Ltd 19 Jan 1977 [27 Jan 1976] 03105/76 Heading H3T [Also in Division H2] In a circuit for switching an electromagnet L, applying a positive voltage (logic 1) to the Control Input sets bi-stable G1, G2, turning on Q1 and Q2 allowing current to flow in L. When this current reaches a predetermined value, sensed by the voltage drop across R, Q3 conducts, resetting the bi-stable and turning off Q1, a circulating current then flowing via diode D2. Returning the control input to its former level (logic 0) turns off Q1, Q2, the current in L then decaying via D1, D2. The rate of rise of current on switching on is the same as the rate of fall of current on switching off.
GB310576A 1976-01-27 1976-01-27 Switching circuit for an electromagnet Expired GB1511931A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB310576A GB1511931A (en) 1976-01-27 1976-01-27 Switching circuit for an electromagnet
DE19772703129 DE2703129A1 (en) 1976-01-27 1977-01-26 CONTROL CIRCUIT FOR AN ELECTROMAGNET
FR7702138A FR2339944A1 (en) 1976-01-27 1977-01-26 ELECTRO-MAGNET SWITCHING CIRCUIT
JP821577A JPS5293962A (en) 1976-01-27 1977-01-27 Switch circuit for electromagnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB310576A GB1511931A (en) 1976-01-27 1976-01-27 Switching circuit for an electromagnet

Publications (1)

Publication Number Publication Date
GB1511931A true GB1511931A (en) 1978-05-24

Family

ID=9752040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB310576A Expired GB1511931A (en) 1976-01-27 1976-01-27 Switching circuit for an electromagnet

Country Status (4)

Country Link
JP (1) JPS5293962A (en)
DE (1) DE2703129A1 (en)
FR (1) FR2339944A1 (en)
GB (1) GB1511931A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145584A (en) * 1981-10-26 1985-03-27 Nat Res Dev Electrically energised vibratory conveyors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915317A1 (en) * 1979-04-14 1980-10-23 Binder Magnete CIRCUIT FOR CONTROLLING A PULSE MAGNET

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145584A (en) * 1981-10-26 1985-03-27 Nat Res Dev Electrically energised vibratory conveyors

Also Published As

Publication number Publication date
DE2703129A1 (en) 1977-07-28
JPS5293962A (en) 1977-08-08
FR2339944A1 (en) 1977-08-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee