JPS55123709A - Alternating current constant-voltage unit - Google Patents

Alternating current constant-voltage unit

Info

Publication number
JPS55123709A
JPS55123709A JP3067179A JP3067179A JPS55123709A JP S55123709 A JPS55123709 A JP S55123709A JP 3067179 A JP3067179 A JP 3067179A JP 3067179 A JP3067179 A JP 3067179A JP S55123709 A JPS55123709 A JP S55123709A
Authority
JP
Japan
Prior art keywords
resistance
light
characteristic change
triac2
impedance
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.)
Pending
Application number
JP3067179A
Other languages
Japanese (ja)
Inventor
Hiroshi Okamoto
Mitsuo Yonemori
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP3067179A priority Critical patent/JPS55123709A/en
Publication of JPS55123709A publication Critical patent/JPS55123709A/en
Pending legal-status Critical Current

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  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE: To make it possible to make a unit small-size easily and compensate automatically characteristic change, by using a light-resistance conversion element, which changes the impedance dependently upon a light source, to control the firing phase of an AC switching circuit.
CONSTITUTION: A phase control circuit is constituted by capacitor 21 connected in series, light-resistance conversion element 22, resistance 24 connected in parallel to resistance 23 and element 22, two-terminal two-way switching element 25 connected between the gate of TRIAC2 and the connection point between capacitor 21 and element 22. When the light emission quantity of light emission diode 38 is reduced gradually according to time elapse, the impedance of element 22 is increased according to this reduction; and as a result, the conduction angle of TRIAC2 becomes small. Therefore, the voltage generated in load L is reduced, and the collector current of transistor 37 is increased. Thus, the unit is so controlled automatically that voltages at both ends of load L may be fixed even for characteristic change of diode 38 and element 22, thus compensating automatically characteristic change.
COPYRIGHT: (C)1980,JPO&Japio
JP3067179A 1979-03-16 1979-03-16 Alternating current constant-voltage unit Pending JPS55123709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3067179A JPS55123709A (en) 1979-03-16 1979-03-16 Alternating current constant-voltage unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3067179A JPS55123709A (en) 1979-03-16 1979-03-16 Alternating current constant-voltage unit

Publications (1)

Publication Number Publication Date
JPS55123709A true JPS55123709A (en) 1980-09-24

Family

ID=12310184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3067179A Pending JPS55123709A (en) 1979-03-16 1979-03-16 Alternating current constant-voltage unit

Country Status (1)

Country Link
JP (1) JPS55123709A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010748A (en) * 1996-03-22 2000-01-04 Advanced Technology Materials, Inc. Method of delivering source reagent vapor mixtures for chemical vapor deposition using interiorly partitioned injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010748A (en) * 1996-03-22 2000-01-04 Advanced Technology Materials, Inc. Method of delivering source reagent vapor mixtures for chemical vapor deposition using interiorly partitioned injector

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