CN2160173Y - AC photoelectric switch - Google Patents

AC photoelectric switch Download PDF

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Publication number
CN2160173Y
CN2160173Y CN 93216343 CN93216343U CN2160173Y CN 2160173 Y CN2160173 Y CN 2160173Y CN 93216343 CN93216343 CN 93216343 CN 93216343 U CN93216343 U CN 93216343U CN 2160173 Y CN2160173 Y CN 2160173Y
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China
Prior art keywords
light
emitting diode
utility
model
resistance
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Expired - Fee Related
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CN 93216343
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Chinese (zh)
Inventor
翁守浩
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Individual
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Individual
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Abstract

The utility model discloses an improved AC photoelectric switch. The utility model is characterized in that photosensitive resistors R < 6 > and R < 8 > which are connected in parallel are connected in series with a luminous diode D < 2 > and a resistor R < 10 > which are connected in series to form a synthesis AC gate circuit control luminous diode D < 3 >, and the D < 3 > and a photosensitive resistor R < 2 > are used for controlling the switching of a power supply. The utility model can be directly connected with an AC power supply, and can always keep in power supply disconnection state without manual operation when the power supply is recovered after power failure; the utility model has the advantages of high stability, wide selecting range of a controlled silicon, etc. and the utility model can be used for the control of various industrial electric appliances and household appliances.

Description

AC photoelectric switch
The utility model relates to a kind of switch, particularly a kind of interchange optoelectronic switch.
In industrial production and daily life, noncontacting switch is replacing contact switch devices such as pulling switch, electromagnetic relay and A.C. contactor because of it is safe, reliable, the use electronic component is few in a lot of occasions.Need establish controllable silicon triggering power supply in addition in order to solve general noncontacting switch, and the back problem that power supply can not auto power off again has a power failure, the utility model designer has invented " the interchange optoelectronic switch " of the patent No. for " 92242143.9 ", control the break-make of power supply effectively, but it selects to have relatively high expectations for silicon controlled, the control contact is few, and stability is good inadequately.
The object of the present invention is to provide and a kind ofly done improvement, perfect on the basis of former patent " interchange optoelectronic switch ", applied widely, shock resistance is strong, and the controllable silicon range of choice is wide, and the back power supply interchange optoelectronic switch that can keep power supply to disconnect again has a power failure.
The utility model is realized its purpose as follows: switch comprises startup, stops optical gate control circuit and bidirectional triode thyristor circuits for triggering, photo resistance R in parallel 6, R 8With light-emitting diode D in parallel 2, resistance R 10Be connected to light-emitting diode D after the series connection 3Negative electrode and load R LAn end join photo resistance R 2With light-emitting diode D 3Over against, R 2Two ends respectively with bidirectional triode thyristor KS 1Main electrode T 12With gate pole G 1Join.Also can be to start normal open switch 3 and photo resistance R 8Parallel connection replaces resistance R 5, light-emitting diode D 1, start optical gate 1 and photo resistance R 6The startup optical gate control circuit of forming is to stop normal open switch 4 and light-emitting diode D 2Parallel connection replaces stopping optical gate 2.
Originally improved interchange optoelectronic switch is existing can directly be connected with AC power, and the back that has a power failure remains the advantage of deenergization state under unmanned situation, a plurality of switches of may command are arranged again, and anti-pulse current impact is strong, the advantage that the controllable silicon choice is big.
Embodiment further specifies the utility model below in conjunction with accompanying drawing.
Fig. 1 is a line map of the present utility model.
Fig. 2 is light-emitting diode D of the present utility model 3With photo resistance R 2Structural representation.
Line map when Fig. 3 adopts sensitive switch to replace optical gate for the utility model.
Principle of the present utility model and characteristics are photo resistance R in parallel 6And R 8With light-emitting diode D in parallel 2And resistance R 10Be composed in series Integrated Exchange gate circuit control diode D 3Luminous, utilize D 3Light source control photo resistance R 2Trigger controllable silicon and control on/off.Light-emitting diode D 1By current-limiting resistance R 5In parallel with AC power AB end, resistance R 3And R 7Respectively with photo resistance R 2, R 8Parallel connection, resistance R 1With diode D 3Parallel connection, thyristor gating circuit is by bidirectional triode thyristor KS 1, KS 2Form, power supply one end lead-in wire is connected to controllable silicon KS 2Main electrode T 21, KS 2Another main electrode T 22With current-limiting resistance R 4An end and load join R 4The other end and KS 1Main electrode T 12Join.
During use, AB termination indirect current source, light-emitting diode D 1Get electroluminescence, at this moment press startup optical gate 1, D 1Light shine photo resistance R by the loophole on optical gate 15 6On, R 6Be low resistive state, make light-emitting diode D 2, D 3All get electroluminescence, photo resistance R 2Therefore conducting triggers controllable silicon KS 1, KS 2, switch is in " opening " attitude.After unclamping startup optical gate 1, resistance R 6Become high-impedance state, but because of diode D 2Got electroluminescence, light makes resistance R by the loophole 6 that stops on the optical gate 2 8Be low resistive state, make the switch self-locking, load R LStill.When needing off switch, press and stop optical gate, resistance R 8Be high-impedance state because of can not get light, load is promptly cut off the power supply; During power failure, switch outage, photo resistance R 6, R 8All be high-impedance state, light-emitting diode D 3Can't get electroluminescence, KS 1, KS 2The conducting that also therefore can't be triggered is restarted load R until having the people to press to start optical gate 1 LJust can be again.
When adopting fine motion normal open switch shown in Figure 3 to replace optical gate, it is the same with the effect that starts optical gate 1 to start normal open switch 3, it is the same with the effect that stops optical gate 2 to stop normal open switch 4, presses respectively when startup and off switch to start normal open switch 3 and stop normal open switch 4 to get final product; If have a power failure diode D 2After the dead electricity if unmanned start equally not can be again the electric controllable silicon triggering and conducting that makes.When more than one of the switch of control, can be at diode D 3With load R LBetween seal in the light-emitting diode of relative switch number and increase supporting photo resistance and bidirectional triode thyristor gets final product.When power supply is 220 volts, can be connected in series 75 light-emitting diodes at most; When power supply is 380 volts, can go here and there 130 light-emitting diodes at most.When present embodiment seals in two light-emitting diodes again and increases corresponding photo resistance and controllable silicon, just can be used as the three-phase alternating current switch and use.

Claims (2)

1, a kind of interchange optoelectronic switch comprises startup, stops optical gate control circuit and bidirectional triode thyristor circuits for triggering, it is characterized in that photo resistance R in parallel 6, R 8With light-emitting diode D in parallel 2, resistance R 10Be connected to light-emitting diode D after the series connection 3Anode, D 3Negative electrode and load R LAn end join photo resistance R 2With light-emitting diode D 3Over against, R 2Two ends respectively with bidirectional triode thyristor KS 1Main electrode T 12With gate pole G 1Join.
2, optoelectronic switch according to claim 1 is characterized in that to start normal open switch (3) and photo resistance R 8Parallel connection replaces resistance R 5, light-emitting diode D 1, start optical gate (1) and photo resistance R 6The startup optical gate control circuit of forming is to stop normal open switch (4) and light-emitting diode D 2Parallel connection replaces stopping optical gate (2).
CN 93216343 1993-06-17 1993-06-17 AC photoelectric switch Expired - Fee Related CN2160173Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93216343 CN2160173Y (en) 1993-06-17 1993-06-17 AC photoelectric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93216343 CN2160173Y (en) 1993-06-17 1993-06-17 AC photoelectric switch

Publications (1)

Publication Number Publication Date
CN2160173Y true CN2160173Y (en) 1994-03-30

Family

ID=33796549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 93216343 Expired - Fee Related CN2160173Y (en) 1993-06-17 1993-06-17 AC photoelectric switch

Country Status (1)

Country Link
CN (1) CN2160173Y (en)

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C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee