SE8205638D0 - DEVICE FOR CONTROLING AC POWER LOADS - Google Patents

DEVICE FOR CONTROLING AC POWER LOADS

Info

Publication number
SE8205638D0
SE8205638D0 SE8205638A SE8205638A SE8205638D0 SE 8205638 D0 SE8205638 D0 SE 8205638D0 SE 8205638 A SE8205638 A SE 8205638A SE 8205638 A SE8205638 A SE 8205638A SE 8205638 D0 SE8205638 D0 SE 8205638D0
Authority
SE
Sweden
Prior art keywords
comparator
input
saw tooth
load
potential
Prior art date
Application number
SE8205638A
Other languages
Swedish (sv)
Other versions
SE430459B (en
SE8205638L (en
Inventor
A Niemand
R V Dagborn
Original Assignee
Hasselblad Ab Victor
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 Hasselblad Ab Victor filed Critical Hasselblad Ab Victor
Priority to SE8205638A priority Critical patent/SE430459B/en
Publication of SE8205638D0 publication Critical patent/SE8205638D0/en
Publication of SE430459B publication Critical patent/SE430459B/en
Publication of SE8205638L publication Critical patent/SE8205638L/sv

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

The present invention relates to an arrangement comprising a triac 3 with toothed circuits 9 for controlling the current through an AC current-powered load, preferably a projection lamp 4. The arrangement comprises a comparator 7, one input of which is connected to a grid-synchronous saw tooth generator 6 and the other input of which is connected to an open circuit reference voltage source 8, which has such voltage that the potential of the second input of the comparator 7 without any load other than the comparator 7 itself lies between but close to one of the extreme values of the saw tooth voltage. The reference voltage source 8 has a relatively large internal resistance, so that the potential at the second input of the comparator 7 can be adjusted by means of an external load to at least essentially the other extreme value of the saw tooth voltage. <IMAGE>
SE8205638A 1982-10-04 1982-10-04 Arrangement comprising a triac with toothed circuits for controlling the current through an AC current-powered load, preferably a projection lamp SE430459B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8205638A SE430459B (en) 1982-10-04 1982-10-04 Arrangement comprising a triac with toothed circuits for controlling the current through an AC current-powered load, preferably a projection lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8205638A SE430459B (en) 1982-10-04 1982-10-04 Arrangement comprising a triac with toothed circuits for controlling the current through an AC current-powered load, preferably a projection lamp

Publications (3)

Publication Number Publication Date
SE8205638D0 true SE8205638D0 (en) 1982-10-04
SE430459B SE430459B (en) 1983-11-14
SE8205638L SE8205638L (en) 1983-11-14

Family

ID=20348075

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8205638A SE430459B (en) 1982-10-04 1982-10-04 Arrangement comprising a triac with toothed circuits for controlling the current through an AC current-powered load, preferably a projection lamp

Country Status (1)

Country Link
SE (1) SE430459B (en)

Also Published As

Publication number Publication date
SE430459B (en) 1983-11-14
SE8205638L (en) 1983-11-14

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