CN200976693Y

CN200976693Y - Rotary light modulator

Info

Publication number: CN200976693Y
Application number: CNU2006201577731U
Authority: CN
Inventors: 叶道福
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-14
Filing date: 2006-11-14
Publication date: 2007-11-14
Anticipated expiration: 2016-11-14

Abstract

The utility model relates to a rotary dimmer, comprising a radiating aluminum sheet (1), a control plate (2), a switch (K), and a breadboard (6). The switch (K) is arranged on the control plate, and a plurality of rotary buttons (3) are arranged on the control plate. The dimmer also comprises a filtering unit, a drive unit and a control unit. The filtering unit comprises capacitances (C1) and (C3) and an inductance (L); the drive unit comprises a bidirectional triode thyristor (VS) and a bidirectional trigger diode (DB3); and the control unit comprises resistances (R1), (R2), (R3), a capacitance (C2) and a potentiometer (W). The switch (K) is connected with the filtering unit; the filtering unit is connected with the drive unit through the inductance (L); the drive unit is connected with the control unit through the bidirectional triode thyristor (VS) and the bidirectional trigger diode (DB3); and the control unit is connected with the filtering unit through the capacitance (C3). The capacitance (C1) is connected in parallel with the varistor (R6). Because of the parallel connection of the capacitance (C1) and the varistor, lightning stroke and high voltage pulse can be prevented and the service life of the dimmer can be prolonged.

Description

Rotary dimmer

Technical field

The utility model relates to a kind of rotary dimmer.

Background technology

The dimmer that external some company produces does not have piezo-resistance, at thunderstorm weather thunderclaps and high voltage pulse are often arranged, dimmer can only be faced thunderbolt or powerful high voltage pulse directly owing to there is not lightning measure, very easy damage causes its useful life short, is not durable; Secondly, neither be very sensitive for the adjusting of voltage; Once more, the dimmer that some company produces does not have the power supply display, can't judge in the room of light dark whether power supply is connected, and uses very inconvenient; And the dimmer of selling on the market some mechanically use a potentiometer Control current and voltage, the wearing and tearing of such mechanical structure are very big, cause shorten greatly useful life.

The utility model content

At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of rotary dimmer of anti-lightning strike or high-voltage pulse.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of rotary dimmer comprises heat radiation aluminium flake, control board, switch, wiring board, and described switch is installed on the described control board, is provided with knob on described control board, and it also comprises filter unit, driver element and control unit; Above-mentioned filter unit comprises two electric capacity and an inductance; Driver element comprises bidirectional triode thyristor and bidirectional trigger diode; Control unit comprises three resistance, an electric capacity and a potentiometer; Described switch connects filter unit, filter unit is connected with driver element by inductance, driver element is connected with control unit with bidirectional trigger diode by bidirectional triode thyristor, control unit is connected with filter unit by electric capacity, the electric capacity that is connected with switch in filter unit piezo-resistance in parallel.

The anode of described bidirectional triode thyristor (or negative electrode) connects by an end of the electric capacity that is connected with switch in inductance and the filter unit, and the other end of described electric capacity connects switch, and this end is connected with the negative electrode (or anode) of bidirectional triode thyristor simultaneously; Electric capacity in the control unit is connected with two stiff ends of potentiometer by a resistance, and a stiff end of the sliding contact of above-mentioned resistance and potentiometer and potentiometer is connected in a public connecting end;

The anode of bidirectional trigger diode (or negative electrode) connects the control end of bidirectional triode thyristor, control its angle of flow, the negative electrode of bidirectional trigger diode (or anode) be connected in the electric capacity in the control unit and the resistance that is attached thereto between, the negative electrode of bidirectional triode thyristor (or anode) is connected by another resistance in the control unit simultaneously with between the described public connecting end, be connected by the electric capacity in the filter unit between electric capacity in the control unit and the described public connecting end, described inductance is installed on the described wiring board, and described knob is connected with potentiometer on the wiring board.

Described control circuit also comprises another resistance, and the electric capacity in this unit is connected with electric capacity in the described filter unit with the anode (or negative electrode) of described bidirectional triode thyristor respectively by described another resistance.

Comprise further that also series circuit that the series connection of display lamp and a resistance forms is by the electric capacity parallel connection that is connected with switch in switch and the filter unit.

Described switch is installed on the described control board, is installed separately with described knob.

The beneficial effects of the utility model are: the utility model since on capacitor C 1 piezo-resistance in parallel, so can prevent thunderbolt or high-voltage pulse, with the dimmer that did not have piezo-resistance in the past relatively, can increase the service life; Again because described control circuit also comprises another resistance, electric capacity in this unit is connected with electric capacity in the described filter unit with the anode (or negative electrode) of described bidirectional triode thyristor respectively by described another resistance, so can regulation voltage, increased flexibility; Mains switch and potentiometer mechanically are installed separately, and can reduce the wearing and tearing of components and parts, increase the useful life of dimmer.

Description of drawings

Fig. 1 is a circuit structure diagram of the present utility model.

Fig. 2 is the utility model structural representation.

Reference numeral is as follows:

1: heat radiation aluminium flake 2: control board 3: knob 6: wiring board

K: switch W: potentiometer H: neon bulb

Embodiment

As Fig. 1, shown in Figure 2, a kind of rotary dimmer, comprise heat radiation aluminium flake 1, control board 2, K switch, wiring board 6, described K switch is installed on the described control board 2, K switch is controlled power supply separately, the knob 3 of CONTROLLED POTENTIAL device W, utilize knob CONTROLLED POTENTIAL device easily to operate, be installed separately with described K switch, knob 3 can not be run into K switch when action like this, reduced mechanical wear, increase the useful life of dimmer, can prevent that also child from extending into conductive body such as iron wire on the device on the circuit, influence people's life security, the anode of described bidirectional triode thyristor VS (or negative electrode) is connected with an end of capacitor C 1 by inductance L, the other end of described capacitor C 1 connects K switch, dimmer in the past can not prevent to be struck by lightning or the impact of high-voltage pulse, very easily damage, useful life is shorter, the utility model is piezo-resistance R6 in parallel on capacitor C 1, and it can prevent from can protect dimmer like this in the thunderbolt of thunderstorm weather or the impact of high-voltage pulse, increase its useful life, the other end of described capacitor C 1 is connected with the negative electrode (or anode) of bidirectional triode thyristor VS simultaneously; Described capacitor C 2 is connected with two stiff ends of potentiometer W by resistance R 3, and above-mentioned resistance R 2 is connected in a public connecting end with the sliding contact of potentiometer W and the stiff end of potentiometer W; The anode of bidirectional trigger diode DB3 (or negative electrode) connects the control end of bidirectional triode thyristor VS, control its angle of flow, the negative electrode of bidirectional trigger diode DB3 (or anode) is connected between capacitor C 2 and the resistance R 3, the negative electrode of bidirectional triode thyristor VS (or anode) is connected by resistance R 1 simultaneously with between the described public connecting end, be connected by capacitor C 3 between capacitor C 2 and the described public connecting end, for better regulation voltage, present embodiment also increases resistance R 5, and capacitor C 2 is connected with capacitor C 3 in the described filter unit with the anode (or negative electrode) of described bidirectional triode thyristor VS respectively by described resistance R 5.As preferred embodiment, the utility model also further comprises display lamp, it is in parallel with capacitor C 1 by K switch to be generally connect with a resistance R 4 series circuit that forms of neon bulb H, during energized, neon bulb is bright all the time, when potentiometer begins to be adjusted to certain voltage, the neon bulb coal washing, bulb is lighted, and whether the position that described neon bulb can show it on the one hand can switch on by display circuit on the other hand.

Capacitor C 1, C3 and inductance L are formed low pass filter, eliminate the interference of high-frequency impulse, also can prevent the operate as normal of extraneous this circuit of impulse disturbances.The anode of bidirectional trigger diode DB3 (or negative electrode) connects the control end of bidirectional triode thyristor VS, control its angle of flow, resistance R 1, R2, R3, capacitor C 2 and potentiometer W form a controller, when energized, neon bulb H lights, display circuit has electricity, and regulate described potentiometer W then and control double-bang firecracker diac DB3 by described controller, thus the angle of flow of control bidirectional triode thyristor VS.

The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but on its shape or structure, do any variation; every have identical with a application or akin technical scheme, all drops within the protection range of the present utility model.

Claims

1, a kind of rotary dimmer, comprise heat radiation aluminium flake (1), control board (2), switch (K), wiring board (6), described switch (K) is installed on the described control board (2), be provided with knob (3) on described control board (2), it is characterized in that: it also comprises filter unit, driver element and control unit; Above-mentioned filter unit comprises electric capacity (C1) and (C3) and inductance (L); Driver element comprises bidirectional triode thyristor (VS) and bidirectional trigger diode (DB3); Control unit comprises resistance (R1), (R2), (R3), electric capacity (C2) and potentiometer (W); Described switch (K) connects filter unit, filter unit is connected with driver element by inductance (L), driver element is connected with control unit with bidirectional trigger diode (DB3) by bidirectional triode thyristor (VS), control unit is connected with filter unit by electric capacity (C3), electric capacity (C1) piezo-resistance (R6) in parallel.

2, rotary dimmer according to claim 1, it is characterized in that: the anode (or negative electrode) of described bidirectional triode thyristor (VS) is connected with an end of electric capacity (C1) by inductance (L), the other end of described electric capacity (C1) connects switch, and this end is connected with the negative electrode (or anode) of bidirectional triode thyristor (VS) simultaneously; Described electric capacity (C2) is connected with two stiff ends of potentiometer (W) by resistance (R3), and above-mentioned resistance (R2) is connected in a public connecting end with the sliding contact of potentiometer (W) and a stiff end of potentiometer (W);

The anode (or negative electrode) of bidirectional trigger diode (DB3) connects the control end of bidirectional triode thyristor (VS), control its angle of flow, the negative electrode (or anode) of bidirectional trigger diode (DB3) is connected between electric capacity (C2) and the resistance (R3), the negative electrode (or anode) of bidirectional triode thyristor (VS) is connected by resistance (R1) simultaneously with between the described public connecting end, be connected by electric capacity (C3) between electric capacity (C2) and the described public connecting end, described inductance (L) is installed on the described wiring board (6), and described knob (3) is gone up the potentiometer of installing (W) with wiring board (6) and is connected.

3, rotary dimmer according to claim 1 and 2, it is characterized in that: described control circuit also comprises resistance (R5), and electric capacity (C2) is connected with electric capacity (C3) in the described filter unit with the anode (or negative electrode) of described bidirectional triode thyristor (VS) respectively by described resistance (R5).

4, rotary dimmer according to claim 1 and 2 is characterized in that: comprise further that also connect with a resistance (R4) series circuit that forms of display lamp (H) is in parallel with electric capacity (C1) by switch (K).

5, rotary dimmer according to claim 1 is characterized in that: described switch (K) is installed on the described control board, is installed separately with knob (3).