GB1000451A - Transistor circuit arrangement for relays - Google Patents

Transistor circuit arrangement for relays

Info

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
Application number
GB261861A
Inventor
Frederick Norman Kay
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB261861A priority Critical patent/GB1000451A/en
Publication of GB1000451A publication Critical patent/GB1000451A/en
Expired legal-status Critical Current

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.
GB261861A 1961-12-23 1961-12-23 Transistor circuit arrangement for relays Expired GB1000451A (en)

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)

Similar Documents

Publication Publication Date Title
GB1447379A (en) Circuit having a switching voltage hysteresis
GB1381035A (en) Electrical system with current and voltage limiting-protective means
GB1021713A (en) Electrical circuit
GB1026841A (en) Automatic control switchboard assembly
GB958774A (en) Improvements in and relating to the temperature compensation of transistor amplifiers
GB1139877A (en) Improvements in or relating to switching circuits
GB1220538A (en) Voltage protection circuit for transistor regulaters
GB1000451A (en) Transistor circuit arrangement for relays
GB819627A (en) Improvements in or relating to transistor circuit arrangements for d.c. voltage stabilisation
GB845687A (en) Transistor switching circuits
GB982453A (en) Improvements in transistor circuits
GB834367A (en) Circuit arrangement for current-regulation with the aid of transistors
GB1102590A (en) Comparator circuit
GB1005549A (en) Transistor circuits
GB1099014A (en) Improvements in or relating to electrical pulse-stabilising circuits
GB974105A (en) Improvements relating to transistor amplifier circuit arrangements
GB870619A (en) Improvements in and relating to relay operating circuits employing transistors
GB848605A (en) Improvements in and relating to transistor circuits
GB980370A (en) Improvements in or relating to current regulating transistor circuit arrangements
GB992540A (en) Relay circuit
GB851394A (en) Improvements in or relating to electric amplifiers
GB979964A (en) Transistor switching circuit
GB964664A (en) Improvements in or relating to electronic switches
GB1063763A (en) Improvements in and relating to constant electrical current supply circuits
GB978222A (en) Transistor switching circuit