CN2341846Y - Short circuit protective flashing device - Google Patents

Abstract

The utility model relates to a short circuit protective type flashing device, which is composed of an electronic switching circuit, a sampling control circuit, a timing control circuit and a power supply regulation circuit. The purpose of the utility model is realized by enhancing the interference resistance and the recognition capability of short the circuit protection of the circuits of the flashing circuit to control the electronic switching circuit. The flashing device has the advantages of few electronic elements, simple circuits, stable and reliable performance, interference resistance and short circuit protection functions, low manufacturing cost, long service life and easy installation, and is especially suitable for being applied on motorcycles and automobiles.

Description

Short-circuit protection type Der Blink und Abblendschalter

The utility model relates to automobile-use and shows to Der Blink und Abblendschalter, particularly be applicable on automobile, the motor bike do to show to short-circuit protection type Der Blink und Abblendschalter.

Der Blink und Abblendschalter at present commonly used has contact and contactless flasher, has that the contact flasher ubiquity is fragile, service life short; Though contactless flasher solves the problem have contact flasher to exist, need with electronic component, ic pin many, the circuit complexity, stability is relatively poor, the cost height can not resist and driedly scratch and do not have a short-circuit protection function.

The purpose of this utility model is to provide that a kind of use electronic component is less, circuit is simple, and is stable and reliable for performance, and cost is low, the short-circuit protection type Der Blink und Abblendschalter that the life-span is long.It is to adopt anti-dried the scratching with the discernibility of short-circuit protection of raising flasher circuit to control electronic switching circuit and realize the purpose of this utility model.

Below in conjunction with accompanying drawing, embodiment the utility model is further described:

Fig. 1 is an electrical block diagram of the present utility model, and shown in figure: the utility model is made up of electronic switching circuit, sampling control circuit, timing control circuit, power supply regulator circuit.Electronic switching circuit is by BG ₁B utmost point serial connection R ₇, BG ₂And BG ₃The c utmost point form, via BG ₂E utmost point ground connection; R ₂, R ₃, R ₄Series connection, R ₄With C ₂Parallel connection is at R ₃And R ₄With C ₂Connect D between the parallel connection ₂Form the sampling control circuit, sampling control circuit control output end R ₂With R ₃Between and electronic switching circuit controlled input end BG ₃The b utmost point connect, at C ₂Negative pole and R ₄Between via R ₅, R ₆Ground connection; D ₄, C ₁, R ₆Be composed in series timing control circuit, timing control circuit control output end D ₄With C ₁Between and electronic switching circuit controlled input end BG ₃The e utmost point connect, via R ₆Ground connection; The R of power supply regulator circuit ₁, D ₆, C ₃Voltage stabilizing end and sampling control circuit R ₂With timing control circuit D ₄Connect.In addition-D ₃, R ₅, C ₄The feedback voltage input end C of voltage stabilizing end and timing control circuit ₁With R ₆Between connect the D of power supply regulator circuit ₁, R ₁Between rectifier terminal with the sampling control circuit sampling end D ₂Connect another D ₅, R ₅Between rectifier terminal with the sampling control circuit C ₂Negative pole and R ₄Between connect, at D ₆, C ₃, C ₄Between ground connection; Electronic switching circuit BG ₁The e utmost point and the D of power supply regulator circuit ₁The power connection anode, BG ₁The c utmost point and D ₅Connecing flash of light and showing to lamp, load L and stir select switch K, more than four groups of circuit be connected to each other and constitute this Der Blink und Abblendschalter.

The principle of work of embodiment is: as timing control circuit mouth D ₄With C ₁Between and electronic switching circuit BG ₃The e pole tension, be higher than sampling control circuit mouth R ₂With R ₃Between and electronic switching circuit BG ₃B pole tension certain value the time, BG ₂, R ₇, BG ₁Conducting, BG ₁Behind the conducting electric current, BG ₁The voltage of the c utmost point, load L end from D ₅, R ₅, C ₁, R ₆Between feedback voltage obtain, thereby BG is arranged ₁The e utmost point and c utmost point impedance voltage low otherwise the time spent wasted work is little then through the big little positive and negative feedback characteristics of electric current of excess current, make Der Blink und Abblendschalter have Antisurge current and damage protective effect, BG ₁The conducting electric current exceeds the quata, and impedance voltage raises, and the L end is taken short circuit, BG ₁The impedance voltage height is to power line voltage, and control circuit D takes a sample ₂R with parallel connection ₄With C ₂Respectively with the R of power supply regulator circuit ₁, D ₁Between and R ₅, D ₅Between connect sampling, C ₂From R ₃Continue charging, R ₃Value is big, through certain hour C ₂The both end voltage height is to BG ₁Break-make exchange certain number of times by the time, sampling control circuit mouth R ₂With R ₃Current potential raises, and no longer controls BG ₃Conducting, at power supply flutter to BG ₁The e utmost point and c utmost point two ends all do not have voltage instantaneous, R in the power supply regulator circuit ₁With D ₁Between and R ₅With D ₅Between two sampling coupling end D ₁With D ₅The reverse isolation effect is arranged, and two sampling voltages are from filter capacitor C ₃Through R ₁, C ₄, R ₅Replenish, therefore, the sampling control circuit has circuitous short circuit can control the effect of electronic switching circuit normal off, and power supply regulator circuit has the dried sampling action of scratching of insulating power supply pulse, the sampling control circuit just can be controlled the protection of electronic switching circuit normal off reliably, makes Der Blink und Abblendschalter not be subjected to dried the scratching of power source voltage pulsation all to keep the failure-free short-circuit protection function; R in the sampling control circuit ₄With C ₂Parallel connection plays making Der Blink und Abblendschalter comparatively fast recover to exchange interrupted effect after short circuit is eliminated, and it is higher to adjust sampling control circuit output potential value simultaneously, can improve short-circuit protection control sensitivity.D in the power supply regulator circuit ₃, R ₅, C ₄Between for feedback power supply voltage stabilizing end, with the C of timing control circuit ₁With R ₆Between connect and to play voltage stabilizing feedback, C ₁Discharge process; R ₁, D ₆, C ₃Circuit is shared control power supply voltage stabilizing end, with the R of sampling control circuit ₂D with timing control circuit ₄Connect, make power supply regulator circuit that dried sampling control circuit performance and the timing control circuit coordination performance of scratching of insulating power supply mains ripple be arranged, like this, make Der Blink und Abblendschalter in the AC and DC power supply, all can stablize interrupter duty.Increase sampling control circuit R ₂With R ₃Between output potential value and timing control circuit C ₁With R ₆Between value, can increase turn-off time of Der Blink und Abblendschalter, increase sampling control circuit R ₂Value and timing control circuit C ₁Value, can increase service time of Der Blink und Abblendschalter.

The electronic component that this Der Blink und Abblendschalter adopts is suitable for 5～8 volts of AC and DC rated voltages, and Der Blink und Abblendschalter shows to 54 ± 2 times/minute frequency light on and off, bright being longer than the time of going out; Used electronic component: BG ₁Be B511, BG ₃Be A733, BG ₂Be the C945 aerotron, D ₁～D ₅Be the N4001 rectifier diode, D ₆Be 4.3 volts of zener diodes, R ₁, R ₅, R ₇Resistance 100 Ω, R ₂Resistance 680K, R ₃Resistance 1.5M, R ₄Resistance 3M, R ₆Resistance 620 Ω, C ₁Capacitance 220 μ/6.3V, C ₂Capacitance 2.2 μ/50V, C ₃, C ₄Capacitance 100 μ/6.3V.By design circuit of the present utility model, change different electronic component models, change capacitance resistance value and BG ₁Connect R ₇Can be that many groups are in parallel uses, just can form different voltages, power, frequency, model and its function is the same Der Blink und Abblendschalter.

Advantage of the present utility model: use electronic component few, circuit is simple, and is stable and reliable for performance, and anti-dried scratching and short-circuit protection arranged Function, cost is low, long service life.

Claims (1)

1. A kind of short-circuit protection type Der Blink und Abblendschalter is made up of electronic switching circuit, sampling control circuit, timing control circuit, power supply regulator circuit, it is characterized in that electronic switching circuit is by BG ₁B utmost point serial connection R ₇, BG ₂And BG ₃The c utmost point form, via BG ₂E utmost point ground connection, R ₂, R ₃, R ₄Series connection, R ₄With C ₂Parallel connection is at R ₃And R ₄With C ₂Connect D between the parallel connection ₂Form the sampling control circuit, mouth R ₂With R ₃Between and BG ₃The b utmost point connect, at C ₂Negative pole and R ₄Between via R ₅, R ₆Ground connection .D ₄, C ₁, R ₆Be composed in series timing control circuit, mouth D ₄With C ₁Between and BG ₃The e utmost point connect, via R ₆Ground connection, the R of power supply regulator circuit ₁, D ₆, C ₃Voltage stabilizing end and R ₂And D ₄Connect D ₃, R ₅, C ₄Voltage stabilizing end and C ₁With R ₅Between connect the D of power supply regulator circuit ₁With R ₁Between rectifier terminal and D ₂Connect D ₅With R ₅Between rectifier terminal and C ₂Negative pole and R ₄Between connect, at D ₆, C ₃, C ₄Between ground connection, BG ₁The e utmost point and D ₁Power connection anode, the c utmost point and D ₅Connecing flash of light and showing to lamp, load L and stir select switch K, four groups of circuit are connected to each other and constitute this Der Blink und Abblendschalter.