CN207150928U - It is passive to restart anti-hot wire circuit from surge self-resonance - Google Patents

Abstract

The utility model is related to a kind of passive self-resonance of surge certainly can restart anti-hot wire circuit, belong to Non-polarized lamp field.Transformer T1 is flyback transformer, after secondary coupled voltages by agitating square wave certainly caused by primary side, it is coupled out relevant voltage, voltage is by being that resonant capacitance C1 charges after commutation diode D3, after voltage reaches certain value, by described divider resistance R2, R3, cut-in voltage is supplied for resonance controllable silicon Q4 control pole, after controllable silicon Q4 is turned on, electric capacity C2 constitutes loop by controllable silicon Q4 and the resonance step-up transformer T2 primary side winding；Electric capacity works as C2 continuous discharges, and resistance R2, R3 both end voltage reduce, and after voltage is less than the startup voltage of controllable silicon Q4 control terminals, controllable silicon Q4 cut-offs, electric capacity C2 continues through transformer T1, two pole D3 charging.After controllable silicon Q4 switching frequency reaches electric capacity C2 and resonance step-up transformer T2 resonant frequency, resonance step-up transformer T2 both ends will produce high voltage.

Description

It is passive to restart anti-hot wire circuit from surge self-resonance

Technical field

Electrodeless lamp ignitor circuitry field is the utility model is related to, is that a kind of passive self-resonance of surge certainly can restart in detail Anti- hot wire circuit.

Background technology

It is well known that Non-polarized lamp due to have the advantages that luminous intensity is high, light efficiency is high, colour rendering is good, long lifespan and it is wide General application.And electronic ballast for electrodeless lamp has up to 98% conversion efficiency and 0.99 PF values and is widely used.However, with Low-pressure discharge lamp such as fluorescent lamp or LED are compared, and Non-polarized lamp is because the characteristics of its own structure causes to light relatively difficult Lighting Non-polarized lamp needs to carry out high-tension ignition, that is, needing firing circuit continuously to export 2KVAC or so has the point of certain amplitude Fiery pulse or resonance potential.Too high ignition voltage leverages the life-span of whole lamp and ballast.

In order to control firing circuit to export firing pulse as described above to light Non-polarized lamp, the ballast architecture of Non-polarized lamp It is extremely complex, it is necessary to using specific driving chip（IC）, this causes the cost of ballast to increase.And in severe environmental conditions Under, ignition difficulties occur in Non-polarized lamp, and now the component in ballast will be subjected to 2KV high pressures for a long time, easily cause town Flow device damage.And because ballast is typically integrated with fluorescent tube, change the cost of raw material and cost of labor of ballast It is very high.Fig. 1 is the block diagram of the basic structure of conventional electronic ballast for electrodeless lamp inverter circuit, is that common system shares；As shown in figure 1, Common power-frequency voltage（Such as civil power 220V alternating currents）After rectified, filtering and PFC processing, obtain straight Voltage is flowed, the DC voltage is input into half-bridge inversion circuit.Then, in the control of singlechip control chip or driving chip Under, inverter circuit first provides a spark rate for being higher than lamp works frequency, and L1, C2 resonance produce 2KV or so height Pressure, puncture the inert gas inside Non-polarized lamp, then recover normal working frequency again.In this process, 2KV high pressures are to member The voltage stress of device can reduce the life-span of device, on the other hand, if long-time high pressure, be made up of L1, C2, Q1, Q3 humorous The chamber that shakes can enter capacitive area, then Q2, Q3 can be caused to turn on jointly, and short circuit occurs, causes component damage.

The content of the invention

For overcome the deficiencies in the prior art, the utility model, which provides a kind of passive self-resonance of surge certainly, can restart anti-short circuit Firing circuit, avoid the possibility that original half-bridge circuit turns on Damage by Short Circuit circuit jointly.

Technical scheme is used by the utility model solves its technical problem：A kind of passive self-resonance of surge certainly can restart Anti- hot wire circuit, it is characterised in that including electronic time-delay switch S1, rectifier bridge D1, resistance R1, triode Q1, transformer T1, diode D3, resistance R2, R3, controllable silicon Q4, electric capacity C1, transformer T2, resistance R6, amplifier comparator IC1, resistance R7, R8, electric capacity C3 and electronic ballast for electrodeless lamp inverter circuit, the pin of rectifier bridge D1 the 3rd pass through electronic time-delay switch S1 and civil power L End is connected, and the pin of rectifier bridge D1 the 1st are connected with civil power N-terminal, and the pin of rectifier bridge D1 output cathodes 2 is connected with triode Q1 emitter stage, The pin of rectifier bridge D1 output negative poles 4 is connected with transformer T1 2 pin and the loop position of circuit, the transformer T1 pin of tap 3 Triode Q1 base stage is connected to after being connected with resistance R1, transformer T1 1 pin is connected with triode Q1 colelctor electrodes, transformer T1 The pin of vice-side winding 4 connection diode D3 anode, diode D3 negative electrode and resistance R2 one end, controllable silicon Q4 anodes and Electric capacity C1 is connected, and resistance R2, R3 series connection midpoint are connected with controllable silicon Q4 control poles, resistance R3 other end and transformer T1 5 pin, controllable silicon Q4 negative electrode, transformer T2 2 pin be connected, transformer T2 1 pin is connected with electric capacity C1 other end, becomes The depressor T2 pin of secondary 3 and 4 pin is connected with the ignition coil of Non-polarized lamp, resistance R6 one end and electronic ballast for electrodeless lamp inverter circuit Metal-oxide-semiconductor Q3 source electrode and amplifier comparator IC1 2 pin are connected, resistance R6 other end and the loop of circuit, amplifier ratio One end compared with device IC1 4 pin, resistance R8 one end, electric capacity C3 is connected, amplifier comparator IC1 1 pin and electronic time-delay switch S1 It is connected, amplifier comparator IC1 3 pin are connected with resistance R7, R8 series connection midpoint, resistance the R7 other end and amplifier comparator Driving supply voltage VCC is connected in IC1 8 pin, electric capacity C3 and electronic ballast for electrodeless lamp inverter circuit.

The beneficial effects of the utility model are that the high pressure that the perfect component for solving operating circuit bears ignition timing should Power, operating circuit are subjected only to 230KHZ, 400V or so voltages.Outside ignition module is single tube LC resonance, avoids tradition Bridge circuit enters capacitive workspace, and the common rear short circuit of two pipes causes the damage of component.Due to reducing the point of ifq circuit Ignition circuit, ifq circuit, which can use, determines frequency working method, reduces circuit structure, considerably increases the stability of circuit.Cause It is small for auxiliary firing circuit power, it can respectively install, such as light fixture because overlong time produces damage, auxiliary can be individually replaced Firing circuit, have and change conveniently, replacing part is few, saves the advantage of material cost and cost of labor.

Brief description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the circuit theory diagrams of background technology electronic ballast for electrodeless lamp inverter circuit.

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

In fig. 2, the utility model includes electronic time-delay switch S1, rectifier bridge D1, driving resistance R1, the pole of self-oscillation three Pipe Q1, flyback transformer T1, commutation diode D3, divider resistance R2, R3, resonance controllable silicon Q4, resonant capacitance C1, resonance liter Pressure transformer T2, detection resistance R6, amplifier comparator IC1, divider resistance R7, R8, decoupling capacitor C3 and electronic ballast for electrodeless lamp Inverter circuit, electronic ballast for electrodeless lamp inverter circuit are public circuit structures.The pin of rectifier bridge D1 the 3rd are prolonged by electronics Shi Kaiguan S1 are connected with civil power L ends, and the pin of rectifier bridge D1 the 1st are connected with civil power N-terminal, the pin of rectifier bridge D1 output cathodes 2 and triode Q1 emitter stage is connected, and the pin of rectifier bridge D1 output negative poles 4 is connected with transformer T1 2 pin and the loop position of circuit, becomes The depressor T1 pin of tap 3 is connected to triode Q1 base stage, transformer T1 1 pin and triode Q1 current collections after being connected with resistance R1 Pole connection, the transformer T1 pin of vice-side winding 4 connection diode D3 anode, diode D3 negative electrode and resistance R2 one end, Controllable silicon Q4 anodes and electric capacity C1 are connected, and resistance R2, R3 series connection midpoint are connected with controllable silicon Q4 control poles, and resistance R3's is another Outer one end is connected with transformer T1 5 pin, controllable silicon Q4 negative electrode, transformer T2 2 pin, transformer T2 1 pin and electric capacity C1 Other end be connected, transformer the T2 pin of secondary 3 and 4 pin are connected with the ignition coil of Non-polarized lamp, resistance R6 one end and nothing Pole lamp ballast inverter circuit metal-oxide-semiconductor Q3 source electrode and amplifier comparator IC1 2 pin are connected, resistance R6 other end with The loop of circuit, amplifier comparator IC1 4 pin, resistance R8 one end, electric capacity C3 one end be connected, amplifier comparator IC1's 1 pin is connected with electronic time-delay switch S1, and amplifier comparator IC1 3 pin are connected with resistance R7, R8 series connection midpoint, resistance R7's The other end is with driving supply voltage VCC phases in amplifier comparator IC1 8 pin, electric capacity C3 and electronic ballast for electrodeless lamp inverter circuit Even.Amplifier comparator chip IC 1 is AP4310, is 3AX31 from triode Q1 is agitated, and commutation diode D3 is 1N4007, flyback Transformer T1, resonance step-up transformer T2 are EE16 type transformers.

The utility model is when connecting electricity in a flash, because former ballast inverter circuit is frequency setting circuit, its working frequency The resonant network formed less than L1, C2, its both end voltage are maintained in fixed operating voltage range.Therefore nothing can not be activated Mercury ion in the lamp of pole, so lamp resistance is very big, flow through R6 detection resistance electric current very littles, electronic time-delay switch S1 closure conducting shapes State, firing circuit are started working.Electronic time-delay switch S1 simultaneously turns on light switch, gives tacit consent to after delay in 30 seconds or to obtain IC anti- Disconnected after feedback signal.

After electronic time-delay switch S1 is connected, because being PNP triode, original state conducting, therefore change from surge triode Q1 Depressor T1 primary side winding has electric current by the way that triode Q1 base stage is by driving resistance R1 to activate, three poles by triode Q1 Pipe Q1 ends, and transformer T1 primary currents end simultaneously.So repeatedly, complete to start from surge.

Transformer T1 is flyback transformer, and secondary coupled voltages caused by primary side by from after surge square wave, being coupled out phase Voltage is answered, voltage after voltage reaches certain value, passes through the partial pressure by being that resonant capacitance C1 charges after commutation diode D3 Resistance R2, R3, cut-in voltage is supplied for resonance controllable silicon Q4 control pole, after controllable silicon Q4 is turned on, electric capacity C2 passes through controllable silicon Q4 and resonance step-up transformer T2 primary side winding constitutes loop；Electric capacity C2 continuous discharges, resistance R2, R3 both end voltage Reduce, after voltage is less than the startup voltage of controllable silicon Q4 control terminals, controllable silicon Q4 cut-offs, electric capacity C2 continues through transformer T1, diode D3 charge.When controllable silicon Q4 switching frequency reach electric capacity C2 and resonance step-up transformer T2 resonant frequency with Afterwards, resonance step-up transformer T2 both ends will produce high voltage.

Resonance step-up transformer T2 vice-side windings through primary side winding coupled voltages to Non-polarized lamp both ends, inside Non-polarized lamp Resistance is very big, and resonance step-up transformer T2 both end voltages will rise always, the mercury ion and lazy inside breakdown Non-polarized lamp Property gas, after mercury ion inside fluorescent tube being present, resistance diminishes in pipe.

After resistance diminishes in electrodeless lamp tube, inductance L1 and electric capacity C2 will form loop by metal-oxide-semiconductor Q2, Q3, there is electricity Stream passes through loop, flows through detection resistance R6 electric current increase, the rise of resistance R6 both end voltages, is notified by amplifier comparator IC1 Electronic time-delay switch S1 is turned off, and now firing circuit is stopped, untill next time provides a modulating signal.

When Non-polarized lamp can not start because temperature is too low, firing circuit can constantly restart within the time of 30 seconds, until nothing Pole lamp is lighted.

When Non-polarized lamp damages or other reasons can not start, electronic time-delay switch can automatically reset after 30 seconds, ignition power Road is stopped.

In summary, the utility model can restart anti-hot wire circuit by a passive self-resonance of surge certainly, pass through Whether one amplifier comparator detection Non-polarized lamp works, and carrys out auxiliary circuit igniting, so as to avoid high-tension circuit to former Non-polarized lamp The damage of ballast component, reduces the cost of former electronic ballast for electrodeless lamp, at the same avoid former bridge-type ballast can not in light fixture Light that time-frequency is heavy to be opened, danger common resonance metal-oxide-semiconductor Q2, Q3.It is provided simultaneously with the advantages of cost is cheap, replacing is simple.

Claims (1)

1. Passive can restart anti-hot wire circuit from surge self-resonance 1. a kind of, it is characterised in that including electronic time-delay switch S1, Rectifier bridge D1, resistance R1, triode Q1, transformer T1, diode D3, resistance R2, R3, controllable silicon Q4, electric capacity C1, transformer T2, resistance R6, amplifier comparator IC1, resistance R7, R8, electric capacity C3 and electronic ballast for electrodeless lamp inverter circuit, the rectifier bridge The pin of D1 the 3rd are connected by electronic time-delay switch S1 with civil power L ends, and the pin of rectifier bridge D1 the 1st are connected with civil power N-terminal, and rectifier bridge D1 is defeated The emitter stage for going out the pin of positive pole 2 with triode Q1 is connected, the pin of rectifier bridge D1 output negative poles 4 and transformer T1 2 pin and circuit The connection of loop position, the transformer T1 pin of tap 3 are connected to triode Q1 base stage after being connected with resistance R1, transformer T1's 1 pin is connected with triode Q1 colelctor electrodes, the transformer T1 pin of vice-side winding 4 connection diode D3 anode, diode D3 the moon Pole is connected with resistance R2 one end, controllable silicon Q4 anodes and electric capacity C1, and resistance R2, R3 series connection midpoint and controllable silicon Q4 are controlled Extremely it is connected, resistance R3 other end is connected with transformer T1 5 pin, controllable silicon Q4 negative electrode, transformer T2 2 pin, transformation Device T2 1 pin is connected with electric capacity C1 other end, and transformer the T2 pin of secondary 3 and 4 pin are connected with the ignition coil of Non-polarized lamp, Resistance R6 one end is connected with electronic ballast for electrodeless lamp inverter circuit metal-oxide-semiconductor Q3 source electrode and amplifier comparator IC1 2 pin, electricity Hinder R6 other end with the loop of circuit, amplifier comparator IC1 4 pin, resistance R8 one end, electric capacity C3 one end phase Even, amplifier comparator IC1 1 pin is connected with electronic time-delay switch S1, amplifier comparator IC1 3 pin and connecting for resistance R7, R8 Midpoint is connected, in the resistance R7 other end and amplifier comparator IC1 8 pin, electric capacity C3 and electronic ballast for electrodeless lamp inverter circuit Driving supply voltage VCC is connected.