GB930115A - Electronic switching circuit - Google Patents
Electronic switching circuitInfo
- Publication number
- GB930115A GB930115A GB3364460A GB3364460A GB930115A GB 930115 A GB930115 A GB 930115A GB 3364460 A GB3364460 A GB 3364460A GB 3364460 A GB3364460 A GB 3364460A GB 930115 A GB930115 A GB 930115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diode
- relay
- capacitor
- switching
- 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
- H03K17/28—Modifications for introducing a time delay before switching
Landscapes
- Relay Circuits (AREA)
Abstract
930,115. Transistor switching circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 29, 1961 [Sept. 30, 1960], No. 33644/60. Class 40 (6). In a switching circuit comprising an electronic switch having an electrically-operated switching device (e.g. a relay) connected in its output circuit, the output circuit is connected back to the input of the electronic switch through a series connected capacitor and diode arranged to delay or prolong operation of the electrically-operated switching device. A circuit for delaying the operation of a relay L comprises a transistor switch T having a capacitor C and a diode D1 connected in series in a feed-back path between collector and base. On switching on transistor T, capacitor provides feed-back to delay operation of the relay. On switching off the diode prevents feed-back to give a quick release. Fast operate and slow release of the relay may be obtained by reversing the polarity of the diode or by using an NPN transister. For high pulse repetition frequencies a further diode D2 may be connected in series with a resistor R to provide a charge on discharge path for the capacitor when D1 is in its high-resistance condition.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3364460A GB930115A (en) | 1960-09-30 | 1960-09-30 | Electronic switching circuit |
| FR874390A FR1302105A (en) | 1960-09-30 | 1961-09-28 | Electronic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3364460A GB930115A (en) | 1960-09-30 | 1960-09-30 | Electronic switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB930115A true GB930115A (en) | 1963-07-03 |
Family
ID=10355586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3364460A Expired GB930115A (en) | 1960-09-30 | 1960-09-30 | Electronic switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB930115A (en) |
-
1960
- 1960-09-30 GB GB3364460A patent/GB930115A/en not_active Expired
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