GB1187270A - Improvements relating to Temperature Control in Electrical Power-Supply Units - Google Patents

Improvements relating to Temperature Control in Electrical Power-Supply Units

Info

Publication number
GB1187270A
GB1187270A GB4730367A GB4730367A GB1187270A GB 1187270 A GB1187270 A GB 1187270A GB 4730367 A GB4730367 A GB 4730367A GB 4730367 A GB4730367 A GB 4730367A GB 1187270 A GB1187270 A GB 1187270A
Authority
GB
United Kingdom
Prior art keywords
transistor
thermistor
heat sink
temperature
temperature control
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
GB4730367A
Inventor
David John Rice
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.)
Catylators Ltd
Original Assignee
Catylators 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 Catylators Ltd filed Critical Catylators Ltd
Priority to GB4730367A priority Critical patent/GB1187270A/en
Publication of GB1187270A publication Critical patent/GB1187270A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors

Abstract

1,187,270. Automatic voltage control. CATYLATORS Ltd. Oct.9, 1968 [Oct.17, 1967], No.47303/67. Heading G3R. The semi-conductor control element, e.g. a series transistor or thyristor of a regulated power supply unit has a heat sink which is thermally associated with a temperature sensitive device, e.g. a thermistor or P.T.C. resistor, which is arranged to initiate turning-off of the control element when the temperature of the heat sink exceeds a predetermined maximum value. As shown, a supply unit comprises input terminals 1, 2, output terminals 3, 4, a series transistor VT2 controlled in known manner by a circuit including a comparator C and an amplifier A, a thermistor TH mounted on the heat sink of the transistor VT2, and a further transistor VT1 which is inter-connected with the thermistor TH and the transistor VT2. When the temperature of the heat sink reaches a desired maximum value the change in base voltage, due to the reduction in resistance of the thermistor TH, of the transistor VT1 is such that the latter commences to conduct; current is thus diverted from the base of transistor VT2 so that the output current from the unit is reduced, as is also the power to be dissipated in the transistor VT2.
GB4730367A 1967-10-17 1967-10-17 Improvements relating to Temperature Control in Electrical Power-Supply Units Expired GB1187270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4730367A GB1187270A (en) 1967-10-17 1967-10-17 Improvements relating to Temperature Control in Electrical Power-Supply Units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4730367A GB1187270A (en) 1967-10-17 1967-10-17 Improvements relating to Temperature Control in Electrical Power-Supply Units

Publications (1)

Publication Number Publication Date
GB1187270A true GB1187270A (en) 1970-04-08

Family

ID=10444465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4730367A Expired GB1187270A (en) 1967-10-17 1967-10-17 Improvements relating to Temperature Control in Electrical Power-Supply Units

Country Status (1)

Country Link
GB (1) GB1187270A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2051761A1 (en) * 1969-07-15 1971-04-09 Rca Corp
FR2365247A1 (en) * 1976-09-20 1978-04-14 Cutler Hammer World Trade Inc SEMICONDUCTOR POWER SWITCHING CIRCUIT WITH THERMAL PROTECTION
CN112074047A (en) * 2020-09-09 2020-12-11 上海应用技术大学 Control method and device for controlling intelligent regulation and control of temperature of semiconductor refrigerating sheet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2051761A1 (en) * 1969-07-15 1971-04-09 Rca Corp
FR2365247A1 (en) * 1976-09-20 1978-04-14 Cutler Hammer World Trade Inc SEMICONDUCTOR POWER SWITCHING CIRCUIT WITH THERMAL PROTECTION
CN112074047A (en) * 2020-09-09 2020-12-11 上海应用技术大学 Control method and device for controlling intelligent regulation and control of temperature of semiconductor refrigerating sheet
CN112074047B (en) * 2020-09-09 2024-02-02 上海应用技术大学 Control method and device for intelligent temperature regulation and control of semiconductor refrigerating sheet

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees