CN2293935Y

CN2293935Y - Electric fast starter with high performance

Info

Publication number: CN2293935Y
Application number: CN 97208931
Authority: CN
Inventors: 陈大洲
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-04
Filing date: 1997-04-04
Publication date: 1998-10-07
Anticipated expiration: 2007-04-04

Abstract

The utility model provides an electric fast starter with high performance, which is composed of a half-bridge rectification capacitor voltage boost circuit, a thyristor switch circuit, a resistor step-down triggering circuit, a transistor forced turn off thyristor circuit, and a casing. The circuit design of the utility model is unique and advanced, the disadvantage that an existing electronic starter can not start a thin pipe diameter fluorescent lamp is overcome, the utility model can start large and thin pipe diameter fluorescent lamps quickly, and has the advantages of good glow starting performance, no contact, long service life, and quick glow starting, the fluorescent lamp is bright when started, and the utility model is a novel electric fast starter with practical value.

Description

The high-performance electronic fast starter

The utility model relates to a kind of starter for fluorescent, particularly a kind of high-performance electronic fast starter.

Existing electronic starter generally all exists can only the big caliber fluorescent lamp of fast starting, to tubule footpath fluorescent lamp with regard to starter not shortcoming.

The purpose of this utility model is at the deficiencies in the prior art part, provide a kind of to big, tubule footpath fluorescent lamp can both fast starting the high-performance electronic fast starter.

The purpose of this utility model can reach by following measure: the utility model comprises that half-bridge commutation capacitor booster circuit, reverse-blocking tetrode thyristor circuit, resistance step-down circuits for triggering, transistor force to turn-off ghyristor circuit, shell is formed, it is characterized in that: the positive pole of diode D2, D3 connects the filament two ends respectively in the half-bridge commutation capacitor booster circuit, and capacitor C 1 and D2 also connect; Controllable silicon SCR is connected with diode D4 in the reverse-blocking tetrode thyristor circuit, and the negative pole of the positive pole of SCR and D2 and D3 joins, and D4 negative pole and D3 positive pole join; Diode D1 is anodal in the resistance step-down circuits for triggering joins with the D2 positive pole, the negative pole of D1 and resistance R 1 are joined, the other end of R1 and resistance R 2 and the controllable silicon SCR control utmost point join, the other end of R2 and D4 negative connect, capacitor C 2 and R2 also connect transistor and force to turn-off in the ghyristor circuit that triode BG collector electrode controls the utmost point with SCR and the C2 positive pole joins, BG emitter and D4 negative pole join, and the BG base stage is joined with SCR negative pole and D4 positive pole.

Fig. 1 is the utility model electrical schematic diagram

Fig. 2 is the utility model shell view

The utility model is described in further detail below in conjunction with accompanying drawing.

With reference to Fig. 1, form half-bridge commutation capacitor booster circuit by diode D2, D3 and capacitor C 1; Form the reverse-blocking tetrode thyristor circuit by controllable silicon SCR and diode D4; Form resistance step-down circuits for triggering by diode D1, resistance R 1R2 and capacitor C 2; Form transistor by triode BG and diode D4 and force to turn-off ghyristor circuit.

220 alternating currents add to the anodal two ends of D2 and D3 respectively through ballast and filament when the fluorescent lamp energized, D2 conducting during positive half cycle, the D3 conducting is charged to C1 during negative half period, and positive-negative half-cycle voltage is superimposed and makes positive half cycle voltage rising add to SCR and D4 two ends as a result.Meanwhile, make the SCR control utmost point obtain the trigger voltage conducting by D1 rectification R1 step-down R2 dividing potential drop C2 filtering, so the positive half cycle current after boosting passes through filament through ballast, filament is heated very soon, filament outage during negative half period, turn-off when the conducting when positive half cycle that is SCR, negative half period, filament is constantly switched on and the filament two ends that cut off the power supply under the self-induction action of ballast induce high voltage and excite fluorescent lamp to light.Fluorescent lamp is lighted back filament both end voltage and can be dropped to below the 110V, and whole starting circuit just quits work automatically by designing requirement.Because filament energising frequency equals ac frequency, so daylight lamp glow starting is extremely rapid, one open promptly bright.

From above analysis as can be known, diode D4 among Fig. 1 and triode BG do not connect can the fast starting fluorescent lamp, this is like this really for big caliber daylight, but it is just different for tubule footpath fluorescent lamp, because the filament internal resistance of tubule footpath fluorescent lamp is less, the high hot coherence of filament temperature is big during energising, is directed at controllable silicon SCR and is difficult for turn-offing when the negative half period of alternating current.Therefore, must force to turn-off controllable silicon, ability fast starting tubule footpath fluorescent lamp, D4 among Fig. 1 and BG just can play this effect.Its principle is, the D4 two ends have positive 0.6V voltage drop when positive half cycle SCR conducting, this positive voltage adds to the BG base stage makes the BG collector and emitter become conducting by ending, make its control utmost point of SCR one conducting just become negative voltage immediately by positive voltage, this negative voltage impels SCR to be forced to turn-off once then at negative half period, thereby reaches the purpose of fast starting tubule footpath fluorescent lamp.Hence one can see that, and this starting circuit has higher starting performance, the equal energy of tubule footpath fluorescent lamp fast starting greatly,, but consider from economic angle, because removing D4 and BG can the big caliber fluorescent lamp of fast starting, therefore, the utility model can be divided into two kinds on I type and II type when manufacturing a product, the I type can be used for greatly, tubule footpath fluorescent lamp, and the II type can only be used for big caliber fluorescent lamp.

With reference to Fig. 2, the electronic component of whole igniter circuitry is loaded in the shell 1 with the wiring board welding, and shell sizes is identical with existing neon bulb starter, and is interchangeable.

The utility model compared with prior art has higher starting performance, large and small caliber day Light modulation all can fast starting, one open namely bright, and contactless, the life-span is long, is a kind of practical valency that has The novel Glow starter of value.

Claims

A kind of high-performance electronic fast starting, force shutoff ghyristor circuit, shell to be formed by half-bridge commutation capacitor booster circuit, reverse-blocking tetrode thyristor circuit, resistance step-down circuits for triggering, transistor, it is characterized in that: the positive pole of diode D2, D3 connects the filament two ends respectively in the half-bridge commutation capacitor booster circuit, and capacitor C 1 and D2 also connect; Controllable silicon SCR is connected with diode D4 in the reverse-blocking tetrode thyristor circuit, and the negative pole of the positive pole of SCR and D2 and D3 joins, and D4 negative pole and D3 positive pole join; The positive pole of diode D1 and D2 positive pole join in the resistance step-down circuits for triggering, and the negative pole of D1 and resistance R 1 are joined, and the other end of R1 and resistance R 2 and the controllable silicon SCR control utmost point join, and the other end of R2 and D4 negative pole join, and capacitor C 2 and R2 also connect; Triode BG collector electrode joins with the SCR control utmost point and C2 positive pole in the transistor pressure shutoff ghyristor circuit, and BG emitter and D4 negative pole join, and the BG base stage is joined with SCR negative pole and D4 positive pole.