GB1000451A - Transistor circuit arrangement for relays - Google Patents
Transistor circuit arrangement for relaysInfo
- Publication number
- GB1000451A GB1000451A GB261861A GB261861A GB1000451A GB 1000451 A GB1000451 A GB 1000451A GB 261861 A GB261861 A GB 261861A GB 261861 A GB261861 A GB 261861A GB 1000451 A GB1000451 A GB 1000451A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- relay
- voltage
- resistor
- diode
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/30—Modifications for providing a predetermined threshold before switching
Landscapes
- Relay Circuits (AREA)
Abstract
1,000,451. Transistor relay circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 20, 1961 [Jan. 23, 1961], No. 2618/61. Heading H3T. In a transistor relay circuit the relay, the energizing coil EC of which is connected to the collector of transistor TR and to the junction P2 of a series connected resistor R 3 and a Zener diode MR2, is caused to operate whenever the voltage across resistor R 2 of a voltage divider becomes more negative than the limit voltage of a second Zener diode MR1 connected to the emitter of the transistor. The limit value of Zener diode MR2 is higher than that of diode MR1 and by suitable choice of the values of the resistors R 1 , R 2 of the voltage divider connected in parallel with the abovementioned series connection of resistor and diode across input terminals T1, T2 the relay may be made to operate whenever the voltage applied to the terminals T1, T2 is a certain value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB261861A GB1000451A (en) | 1961-12-23 | 1961-12-23 | Transistor circuit arrangement for relays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB261861A GB1000451A (en) | 1961-12-23 | 1961-12-23 | Transistor circuit arrangement for relays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1000451A true GB1000451A (en) | 1965-08-04 |
Family
ID=9742736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB261861A Expired GB1000451A (en) | 1961-12-23 | 1961-12-23 | Transistor circuit arrangement for relays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1000451A (en) |
-
1961
- 1961-12-23 GB GB261861A patent/GB1000451A/en not_active Expired
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