CN2346139Y - Serial-type electronic starter - Google Patents

Abstract

The utility model relates to a serial-type electronic starter which is composed of a rectifier (1), a current limiter (2), an accumulator (3), a step-up transformer (4), a switching device (5), a rectifier (6), a current limiter (7), a trigger (8), and a protective diode, wherein, the accumulator (3), the step-up transformer (4), and the switching device (5) are connected in series, and the protective diode (11) is connected in parallel with the input end of the step-up transformer. The input end of the switching device (5) is connected with the output end of the trigger (8). The point that the output end of the step-up transformer (4) connected with the ground is connected in series with a current detector (9) when necessary, the trigger (8) is connected in parallel with an electric potential clamper (10) simultaneously, and the output end of the current detector (9) is connected with the input end of the electric potential clamper (10). The utility model is suitable for fluorescent lamps and various halide lamps, has the advantages of safety, high durability, etc., and can be used in a broad voltage range.

Description

The tandem electronic starter

The utility model relates to a kind of electronic starter, is used for the starter of fluorescent lamp and metal halide lamp etc.

Starter is fluorescent lamp and the metal halide lamp requisite parts that start light, and the starter majority that uses is to be made by bimetal leaf at present, is connected in parallel on fluorescent lamp and the metal halide lamp.The starter of fluorescent lamp uses of a specified duration, and electrode wears out and lost efficacy.The high pressure that its two ends produced when the starter of metal halide lamp started is connected with power supply and directly is added on the ballast, and causes ballast breakdown and damage easily.Also having a kind of in-line starter is to use step-up transformer, and by electrode discharge, the secondary generation high pressure of step-up transformer, electrode use and can be carbonized after a period of time and need to change at the primary coil of step-up transformer.

The purpose of this utility model is the deficiency that overcomes existing various starters, and a kind of ballast and durable tandem electronic starter of not damaging is provided.

For achieving the above object, the utility model adopts following technical scheme: by trigger output signal control switch device.Switching device, step-up transformer input, the closed series connection of accumulator three, the protection diode is connected in parallel on the step-up transformer input.Rectifier, flow restricter, accumulator three series connection.Another rectifier and another flow restricter are connected with trigger.The step-up transformer output is connected with current detector, and the output of current detector and the control end of voltage clamp link, and the controlled end of voltage clamp is connected in parallel on the trigger, and discharge diode connects trigger and accumulator.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the utility model structural representation.

Fig. 2 is a kind of enforcement circuit diagram of the utility model.

Fig. 3 is a kind of replacement circuit of current detector.

See figures.1.and.2, the utility model is made up of rectifier (1), flow restricter (2), accumulator (3), step-up transformer (4), switching device (5), rectifier (6), flow restricter (7), trigger (8), protection diode (11).Rectifier (1) can unite two into one with rectifier (6).Accumulator (3), step-up transformer (4), switching device (5) three series connection, protection diode (11) and at the input of step-up transformer (4).Switching device (5) input and trigger (8) output link.Add a string current detector (9) in case of necessity in the pick-up point of step-up transformer (4) output, while trigger (8) also connects a current potential clamper (10), and current detector (9) output connects the input of current potential clamper (10).

Switching device (8) can be electric vacuum tube or transistor, transistor can be bipolar transistor, structure field-effect transistor, MOS (metal-oxide-semiconductor) transistor, Schottky barrier control grid field-effect transistor, metal semiconductor field-effect transistor, High Electron Mobility Transistor, static induction transistor, igbt, controllable silicon transistor or Darlington transistor, and what provide among the figure is the controllable silicon transistor.

Step-up transformer (4) can be air-core transformer, ferrocart core transformer, ferrite transformer, silicon steel sheet transformer, and what provide among the figure is ferrite transformer.

Rectifier (1) can be merged into one with rectifier (6), also can be independent separately, and that the people goes out among the figure is the latter.

Rectifier (1) and rectifier (6) can be bridge rectifiers, can be half-wave rectifiers also, and that provide among the figure is the latter.

Flow restricter (2) and flow restricter (7) are resistors.

Accumulator (3) is a capacitor.

Current detector (9) can be by transformer, and rectifier diode and filtering capacitor are formed (Fig. 2), also can form (as Fig. 3) by resistor, rectifier diode and filtering capacitor.Current potential clamper (10) can be a bipolar transistor, can be field-effect transistor also, and that provide among the figure is the former.

Trigger (8) is a flip and flop generator, and it can be made up of integrated circuit or discrete component, and that provide among the figure is the latter.

The brief description course of work of the present utility model and principle:

Charged to C4 by D2 and R3 rectification and current limliting, C4 plays the effect of store electrical energy.Form flip and flop generator by Q2, Q3, D5, D6, R4, R5, R6, C3, form the rectification limiting filter circuit, power to flip and flop generator by D1, R2, C2.Form voltage clamp by R1, C1, Q1.Form current detector by T2, D9, C6.Work as energized, C2 and C4 are recharged, because the effect of C3 makes the base stage of Q3 and the voltage between the emitter not to suddenly change, and make the conducting of Q2 elder generation, and Q3 ends, and the B point is an electronegative potential among the figure.When C2 two ends charging voltage reaches the voltage stabilizing value of voltage stabilizing didoe D6 and the turn-on voltage sum between Q3 base stage and the emitter, flip and flop generator overturns, the Q3 conducting, Q2 ends, be equivalent to voltage that A orders this moment by the control utmost point that R7 is added to switching device controllable silicon G1, make switching device controllable silicon G1 be triggered and conducting.The conducting of G1, be equivalent to the elementary in parallel of C4 and step-up transformer T1, the electric energy that C4 filled discharges to step-up transformer, when the voltage of C4 is lower than the voltage of C2, C2 discharges to step-up transformer T1 by discharge diode D4, have electric current to flow through when step-up transformer T1 is elementary, it is secondary will to induce high voltage, and this high voltage is connected with power supply by ballast start light fluorescent lamp or metal halide lamp.

After lamp is lighted, it is elementary that electric current flows through the transformer T2 of current detector, after the voltage of its secondary induction passes through D9 rectification and C6 filtering, be added to the transistor base of current potential clamper again by R1, the voltage clamp that makes transistor turns and A is ordered is on electronegative potential, and at this moment flip and flop generator does not have enough voltage and can not work.

After the electric energy of capacitor C4 is all transferred to step-up transformer; the C4 both end voltage is zero; electric energy can not shift (reverse charging) to capacitor C4; but elementary by protection diode D7 self-discharge at step-up transformer T1, protection diode D7 plays the effect of protection switch device controllable silicon G1.

When C4 has been put electricity, when power supply was in negative half period, switching device controllable silicon G1 did not have enough conducting electric currents and becomes and end, and waited for triggering next time.

The utility model is not limited to the foregoing description.According to the basic structure of Fig. 1, can make other embodiments to circuit part components and parts or local circuit, these schemes are conspicuous for the foregoing description.

The utility model is used for fluorescent lamp and various metal halide lamp, have safe, reliable, durable, advantage such as can in wide-voltage range, use, wide application prospect is arranged.

Claims (10)

1. tandem electronic starter, it is characterized in that: be made up of rectifier (1), flow restricter (2), accumulator (3), step-up transformer (4), switching device (5), rectifier (6), flow restricter (7), trigger (8), protection diode (11), rectifier (1) can unite two into one with rectifier (6); Accumulator (3), step-up transformer (4), switching device (5) three series connection, protection diode (11) and at the input of step-up transformer (4); Switching device (5) input and trigger (8) output link; Add a string current detector (9) in case of necessity in the pick-up point of step-up transformer (4) output, while trigger (8) also connects a current potential clamper (10), and current detector (9) output connects the input of current potential clamper (10).

2. tandem electronic starter according to claim 1 is characterized in that: switching device (8) can be that electric vacuum tube or transistor, transistor can be bipolar transistor, structure field-effect transistor, MOS (metal-oxide-semiconductor) transistor, Schottky barrier control grid field-effect transistor, metal semiconductor field-effect transistor, High Electron Mobility Transistor, static induction transistor, igbt, controllable silicon transistor or Darlington transistor.

3. tandem electronic starter according to claim 1 is characterized in that: step-up transformer (4) can be air-core transformer, ferrocart core transformer, ferrite transformer, silicon steel sheet transformer.

4. tandem electronic starter according to claim 1 is characterized in that: rectifier (1) can be merged into one with rectifier (6), also can be independent separately.

5. tandem electronic starter according to claim 1 is characterized in that: rectifier (1) and rectifier (6) can be bridge rectifiers, also can be half-wave rectifiers.

6. tandem electronic starter according to claim 1 is characterized in that: flow restricter (2) and flow restricter (7) are resistors.

7. tandem electronic starter according to claim 1 is characterized in that: accumulator (3) is a capacitor.

8. tandem electronic starter according to claim 1 is characterized in that: current detector (9) can be by transformer, and rectifier diode and filtering capacitor are formed, and also can be made up of resistor, rectifier diode and filtering capacitor.

9. tandem electronic starter according to claim 1 is characterized in that: current potential clamper (10) can be a bipolar transistor, also can be field-effect transistor.

10. tandem electronic starter according to claim 1 is characterized in that: trigger (8) is a flip and flop generator, is made up of integrated circuit or discrete component.

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