GB992540A - Relay circuit - Google Patents
Relay circuitInfo
- Publication number
- GB992540A GB992540A GB190761A GB190761A GB992540A GB 992540 A GB992540 A GB 992540A GB 190761 A GB190761 A GB 190761A GB 190761 A GB190761 A GB 190761A GB 992540 A GB992540 A GB 992540A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- relay coil
- relay circuit
- jan
- series
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
- H03K17/64—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads
Landscapes
- Relay Circuits (AREA)
Abstract
992,540. Protecting transistor switching circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 17, 1962 [Jan. 17, 1961], No. 1907/61. Heading H3T. In a relay circuit comprising a relay coil R in series with which is a transistor T forming a switching element, the back E.M.F. across the transistor is limited by means of a Zener diode Z shunting the relay coil R. A blocking rectifier X is connected in series with the Zener diode Z to ensure that the relay coil R is fully energized during the period that transistor T is conducting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190761A GB992540A (en) | 1961-01-17 | 1961-01-17 | Relay circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190761A GB992540A (en) | 1961-01-17 | 1961-01-17 | Relay circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
GB992540A true GB992540A (en) | 1965-05-19 |
Family
ID=9730133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190761A Expired GB992540A (en) | 1961-01-17 | 1961-01-17 | Relay circuit |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB992540A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2579830A1 (en) * | 1985-04-01 | 1986-10-03 | Sgs Microelettronica Spa | Integrated electronic device for controlling inductive loads |
-
1961
- 1961-01-17 GB GB190761A patent/GB992540A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2579830A1 (en) * | 1985-04-01 | 1986-10-03 | Sgs Microelettronica Spa | Integrated electronic device for controlling inductive loads |
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