CN2149742Y - Non-consumption type electric resistance arrangement with ballast function - Google Patents

Abstract

The utility model discloses a device for ballasting and voltage transforming. The utility model is characterized in that a capacitor is connected with the switch of a triggering electric circuit. The electric potential of the capacitor is generated by utilizing the fact that a capacitor in alternate current charges from time to time and discharges from time to time. Through the control of the switch of the triggering electric circuit, the phase of the electric current passing through the capacitor is maintained the same as the phase of the electric potential of an alternating current power supply, and the discharging voltage of the capacitor is superposed with alternating current voltage; thereby, the roles of voltage increase and current choking are played. Compared with traditional like products, a light adjustable ballast or an oscillating transformer designed by utilizing the utility model makes a whole new break through in theory or in structure. The light adjustable ballast or the oscillating transformer designed by utilizing the utility model is low in cost and saves power by more than 40%.

Description

Non-consumption type electric resistance arrangement with ballast function

A kind of device that can be used for ballast and transformation

Existing fluorescent lamp ballast, coil by closed core and to make, after making current, ballast is down auxiliary starter, the high pressure that utilizes self-induction to produce a 400V～500V is given me a little fluorescent lamp, hinder the electric current that flows through fluorescent lamp subsequently again, make the fluorescent lamp operate as normal, because during the fluorescent lamp operate as normal, ironcore choke also participates in work, and entire circuit just shows as inductive circuit, thereby can reduce the power factor of power supply, and because iron loss unshakable in one's determination, eddy current, the resistance of coil and cause the significant wastage of electrical power, more especially need often to change starter, and the big electric current that starts light pipe usually blows the filament of light pipe again, existing ballast generally can not be by regulating size of current to regulate the brightness of light in addition, and most metal material that uses is made the cost height, heavy.

The purpose of this utility model is a kind of electric current that both can hinder that provides for the deficiency that overcomes above-mentioned prior art, again can rectification and boost, do not change the loss-less resistor device of electric current, voltage-phase.

Device provided by the utility model, it is characterized in that electric capacity is connected with a circuits for triggering switch, when utilizing electric capacity in alternating current and charge, the time and discharge and produce an electric capacity electromotive force, control by the circuits for triggering switch, just discharge when the electromotive force when making capacitor discharge is identical with the AC power electric potential direction, at this moment the electric current by electric capacity and circuits for triggering switch, and the phase place of AC supply voltage is identical, electric capacity is no longer done reactive power and the simple metering function that only rises, so electric capacity and circuits for triggering switch are just formed a loss-less resistor circuit.The electromotive force of capacitor discharge and electrical source voltage because of the identical superposition of direction to circuit, make the instantaneous voltage of circuit raise, thereby play the ballast effect.

Solution of the present utility model can further describe with following accompanying drawing.

Fig. 1 is the basic circuit diagram of the utility model most preferred embodiment.

Fig. 2 is the basic circuit diagram of a kind of embodiment of the present utility model.

Fig. 3 is the circuit diagram of embodiment of the present utility model " oscillatory type transformer ".

Fig. 4 is the line map of embodiment of the present utility model " tunable optical energy-saving daylight lamp ".

As shown in Figure 1, the circuits for triggering switch is by bidirectional trigger diode DIAC, button switch K and diode D1 are in series, this circuits for triggering switch is connected with capacitor C, and wherein the rated voltage span of bidirectional trigger diode DIAC is to be less than or equal to the obtainable maximum back emf absolute value of twice capacitor C greater than one times of capacitor C obtainable maximum back emf absolute value of institute.The course of work of circuit is: click button switch K, during the power supply of power supply BA direction, the capacitor C polarization obtains a back electromotive force U _CB', when power supply AB direction is powered, U _ABWith U _CB' direction is identical and be superimposed upon bidirectional trigger diode DIAC the two poles of the earth, and when superimposed voltage rose to the load voltage value of DIAC, to conducting, capacitor C was in the discharge of AB direction at the AB folk prescription for DIAC, and charging obtains one and U then _ABThe electromotive force U ' that direction is opposite _CAAnd store; When electric current becomes the power supply of BA direction once more, the electromotive force U ' that capacitor C is stored _CAWith electrical source voltage U _BABe superimposed upon DIAC the two poles of the earth, when superimposed voltage reached the rated voltage of DIAC, to conducting, capacitor C discharge and then charging obtained a back electromotive force U to DIAC at the BA folk prescription " _CBAnd store, so move in circles.Whole process only needs to get final product by a button switch K under initial condition.Each electric current by capacitor C, DIAC is consistent with the supply voltage phase place, and size of current is subjected to the strict restriction of capacitor C, and electric capacity is not done reactive power, so circuit presents loss-less resistor.

As shown in Figure 2, the circuits for triggering switch comprises bidirectional triode thyristor TRIAC, bidirectional trigger diode DIAC1, capacitor C 1, resistance R, wherein C1 one end is connected with R, the other end and TRIAC's is one extremely in parallel, another utmost point of TRIAC is connected with capacitor C, DIAC1 one terminates between C1 and the R, and the control utmost point of the other end and TRIAC joins, and the R other end can be connected with arbitrary end of capacitor C, R above-mentioned terminates at that end that capacitor C does not connect as yet in this example, when initial, if the power supply of AB direction, the synchronous trigger circuit switch can only make the AB direction conducting of TRIAC, the capacitor C charging obtains one and U _ABReverse electromotive force U ' _CA, and with U ' _CAStore wherein.When the BA direction was powered, circuits for triggering can only make the BA direction conducting of TRIAC, and capacitor C is at same electromotive force U _BAThe direction discharge is charged then, and charged electric potential is stored.At this moment, current phase is identical with the phase place of electrical source voltage; When circuit AB direction power supply once more, the circuits for triggering switch makes the AB direction conducting of TRIAC once more and the BA direction is ended, and capacitor C is in the discharge of AB direction, and then charging, obtain one with electrical source voltage U _ABThe electric current that phase place is identical.So move in circles, pass through TRIAC, the phase place of the electric current of capacitor C is always consistent with the electrical source voltage phase place, the phase place that is circuit total current, voltage keeps identical forever, but the electric current that flows through is to be subjected to the strict restriction of capacitor C, so circuit just shows loss-less resistor, and the electromotive force that each electric capacity is stored and the electromotive force of power supply superpose, thereby the instantaneous voltage of circuit is raise.

This device with loss-less resistor and ballast effect can be widely applied on the electrical equipment that needs high voltage startup and low current work.

Usually, because wattage transformer is subjected to the influence of voltage-current characteristic and can not makes too for a short time, this is new when forming an oscillatory type transformer with the novel loss-less resistor that provides but add as Fig. 3, this oscillatory type transformer is limited by voltage-current characteristic no longer, can do arbitrarily smallly, and can obtain whole power of input circuit equally.Wherein the transformer operating voltage is got the voltage that is lower than 10 times of power supplys or 100 times, diac DIAC gets the absolute value that is a bit larger tham pure capacitance maximum back emf of electric capacity when connecting with transformer, the diode that polarizes this moment can omit, capacitance is as long as adopt just passable greater than the voltage of this diac, it is noted that in the present embodiment, diac can not replace with controllable silicon, otherwise can produce resonance and puncture electric capacity.

The loss-less resistor that device had and the boosting that utilize the utility model to provide, can produce " tunable optical fluorescent lamp ballast " and reach " tunable optical energy-saving daylight lamp ", as Fig. 4, capacitor C adopts variable capacitance, and diac DIAC gets and is a bit larger tham one times of power supply crest voltage.The switch of tunable optical energy-saving daylight lamp has six shelves, and switch only can contact shelves at every turn.During use, switch is shifted onto 5 grades by zero span successively, its course of work is as follows:

0 grade, circuit is in off state, and entire circuit is not worked.

1 grade, light pipe one end filament is fully generated heat and launch free electron.

2 grades, diode makes the electric capacity polarization and produces an electromotive force that approximates spike potential.

3 grades, make the electromotive force of electric capacity and AC power definitely be superimposed upon the two ends of fluorescent lamp L, start fluorescent lamp (because fluorescent start moment just be equivalent to the diac of one 4～5 hectovolt, so circuit need not to add in addition trigger tube).Light pipe after the startup does not again play diac, only is equivalent to a load, and owing to electric capacity is done the power that reactive power has been divided a part of circuit, so fluorescent lamp can not get enough brightness.Below each grade be to utilize loss-less resistor of the present utility model in order to address this problem, electric capacity is not done work.

4 grades, diode makes electric capacity definitely polarization once more, so that diac DIAC can work rapidly.

5 grades, under the effect of diac, electric capacity is no longer done any merit and is only played metering function, and fluorescent lamp sends enough brightness.

In addition, by regulating the size that variable capacitance comes electric current in the control circuit, to reach the purpose of light modulation.

The oscillatory type transformer is because need not to consider voltage-current characteristic, so can do very for a short time, and the ballast that the device that utilizes the utility model to provide is made no longer need be with traditional coil and iron core, can save a large amount of copper, iron raw material, the unique design of this device had both made light pipe and burns out an end, still can continue to use by the reversal connection other end, and electric capacity is to the strictness restriction of electric current, make the probability of filament blow very little again, therefore increased in the life-span of light pipe greatly.Experiment shows, elimination is unshakable in one's determination, iron loss can economize on electricity 10%, improves power factor (PF) and can economize on electricity more than 20%, definitely increases voltage effective value and can economize on electricity more than 10%, therefore the ballast that utilizes this device to make can economize on electricity more than 40%, and its cost is more much lower than traditional ballast.In addition, seal in the circuit of electric capacity, although there is thyristor to exist, the radio frequency interference can not take place, the switch place can not produce spark yet.

Claims (3)

1, has ballast and loss-less resistor performance devices, form, it is characterized in that capacitor C is connected with a circuits for triggering switch by circuits for triggering switch and capacitor C.

2, according to claim 1 have ballast and a loss-less resistor performance devices, it is characterized in that the circuits for triggering switch is by bidirectional trigger diode DIAC, button switch K and diode D1 are in series, this circuits for triggering switch is connected with capacitor C, and wherein the rated voltage span of bidirectional trigger diode DIAC is to be less than or equal to the obtainable maximum back emf absolute value of twice capacitor C greater than 1 times of capacitor C obtainable maximum back emf absolute value of institute.

3, according to claim 1 have ballast and a loss-less resistor device, it is characterized in that the circuits for triggering switch comprises bidirectional triode thyristor TRIAC, bidirectional trigger diode DIAC1, capacitor C 1, resistance R, wherein C1 one end is connected with R, the other end and TRIAC's is one extremely in parallel, another utmost point of TRIAC is connected with capacitor C, and DIAC1 one terminates between C1 and the R, and the other end joins with the control utmost point of TRIAC, the R other end can be connected with arbitrary end of electric capacity.

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