FR2300409A1 - Temp controlled relay using composite bimetallic disc and transistor - with temp compensation and protection against voltage transients - Google Patents

Temp controlled relay using composite bimetallic disc and transistor - with temp compensation and protection against voltage transients

Info

Publication number
FR2300409A1
FR2300409A1 FR7602755A FR7602755A FR2300409A1 FR 2300409 A1 FR2300409 A1 FR 2300409A1 FR 7602755 A FR7602755 A FR 7602755A FR 7602755 A FR7602755 A FR 7602755A FR 2300409 A1 FR2300409 A1 FR 2300409A1
Authority
FR
France
Prior art keywords
transistor
temp
protection against
voltage transients
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.)
Granted
Application number
FR7602755A
Other languages
French (fr)
Other versions
FR2300409B1 (en
Inventor
Siegfried Schwarz
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of FR2300409A1 publication Critical patent/FR2300409A1/en
Application granted granted Critical
Publication of FR2300409B1 publication Critical patent/FR2300409B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature

Abstract

A compact thermal relay is based upon a composite bimetallic sensor and switching transistor that provides improved temperature compensation and allows adjustment of response characteristics by changes in the heat transfer across heater and bimetallic surfaces. The semi-conductor disc (1) contains a transistor coupled thermally with the bimetallic element either by soldering or gluing (double line) the transistor is integrated with a Zener diode (Z1), a resistance (R3) and a diode (D2) to form a constant current supply. The voltage supply is coupled to the heating element in the form of the current supply, diode (D1), resistance (R1) zener diode (Z1) and protecting resistor (R2) for the transistor. The zener diode (Z2) together with resistor (R2) provides protection against unwanted voltage transients in the supply.
FR7602755A 1975-02-04 1976-02-02 Temp controlled relay using composite bimetallic disc and transistor - with temp compensation and protection against voltage transients Granted FR2300409A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH135175A CH589356A5 (en) 1975-02-04 1975-02-04

Publications (2)

Publication Number Publication Date
FR2300409A1 true FR2300409A1 (en) 1976-09-03
FR2300409B1 FR2300409B1 (en) 1979-06-29

Family

ID=4208434

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7602755A Granted FR2300409A1 (en) 1975-02-04 1976-02-02 Temp controlled relay using composite bimetallic disc and transistor - with temp compensation and protection against voltage transients

Country Status (3)

Country Link
CH (1) CH589356A5 (en)
DE (1) DE2508336C3 (en)
FR (1) FR2300409A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH437481A (en) * 1965-06-16 1967-06-15 Landis & Gyr Ag Switching device with two opposing, mechanically coupled bimetal strips
US3641372A (en) * 1970-02-12 1972-02-08 Bendix Corp Temperature controlled microcircuits
DE2260959A1 (en) * 1972-12-13 1974-06-20 Siemens Ag CONTINUOUSLY REGULATING THERMOSTAT

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH437481A (en) * 1965-06-16 1967-06-15 Landis & Gyr Ag Switching device with two opposing, mechanically coupled bimetal strips
US3641372A (en) * 1970-02-12 1972-02-08 Bendix Corp Temperature controlled microcircuits
DE2260959A1 (en) * 1972-12-13 1974-06-20 Siemens Ag CONTINUOUSLY REGULATING THERMOSTAT

Also Published As

Publication number Publication date
DE2508336B2 (en) 1977-09-15
DE2508336A1 (en) 1976-08-05
CH589356A5 (en) 1977-06-30
FR2300409B1 (en) 1979-06-29
DE2508336C3 (en) 1978-04-27

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Legal Events

Date Code Title Description
ST Notification of lapse