CN106954302A - A double-transformer control circuit for electronic energy-saving lamps - Google Patents

Abstract

The invention discloses a kind of electronic energy-saving lamp circuits are controlled with double variable-pressures, mainly by transformer T1, transformer T2, unidirectional thyristor VS, triode VT1, triode VT2, triode VT3, polar capacitor C2, resistance R11, and the polar capacitor C5 for the output end that positive pole is connected after diode D4 with triode VT2 emitter stage, negative pole and transformer T2 secondary inductance coils L5 Same Name of Ends are collectively forming double variable-pressures control circuits are constituted.The present invention can carry out boosting twice to voltage by dual transformer and handle, and the present invention can also carry out effective adjustment or buffering to the impulse wave of voltage, make voltage more steady, more stable, ensure that the present invention can export the voltage of stabilization.

Description

A double-transformer control circuit for electronic energy-saving lamps

technical field

The invention relates to a control circuit, specifically, a double-transformer control circuit for an electronic energy-saving lamp.

Background technique

As a new type of energy-saving light source, electronic energy-saving lamps have been widely accepted and adopted by people for their environmental protection, energy-saving, long life, and small size. The electronic energy-saving lamp is a sensitive semiconductor device with negative temperature characteristics. Therefore, in the application process, the electronic energy-saving lamp control circuit plays a very important role in promoting the stable working state and service life of the electronic energy-saving lamp. However, the existing electronic energy-saving lamp control circuit has the problem of poor output voltage stability, which causes the brightness of the electronic energy-saving lamp to flicker when it is lit, thereby seriously affecting people's life and the service life of the electronic energy-saving lamp.

Therefore, it is urgent to provide an electronic energy-saving lamp control circuit that can improve the stability of the output control voltage.

Contents of the invention

The purpose of the present invention is to overcome the defect of poor output voltage stability in the existing electronic energy-saving lamp control circuit, and provide a double-transformer control circuit for the electronic energy-saving lamp.

The present invention is realized through the following technical solutions: a double-transformer control circuit for electronic energy-saving lamps, mainly composed of transformer T1, transformer T2, unidirectional thyristor VS, triode VT1, triode VT2, triode VT3, and P pole after passing through resistance R1 It is connected with the terminal of the same name of the inductance coil L1 on the primary side of the transformer T1, and the N pole and the emitter of the triode VT1 jointly form a diode D1 at the input end of the double transformer control circuit. One end is connected to the P pole of the diode D1, and the other end is connected to the triode The resistor R2 connected to the base of VT1, the positive pole is connected to the collector of the triode VT1 after passing through the resistor R4, the negative pole is connected to the non-identical terminal of the primary side inductance coil L1 of the transformer T1, and the polarity capacitor C1 is connected to the P pole through the resistor R3 After that, it is connected to the base of the triode VT1, and the N pole is connected to the same-named end of the primary side inductance coil L2 of the transformer T1. One end is connected to the non-identical end of the transformer T1 primary side inductance coil L2, and the other end is The resistor R5 connected to the emitter of the triode VT1, the positive pole is connected to the terminal of the same name of the secondary inductance coil L3 of the transformer T1, the negative pole is connected to the emitter of the triode VT1, and then the polarity capacitor C2 is grounded, and one end is connected to the emitter of the triode VT2 Resistor R6 connected to the pole phase and the other end connected to the same-named end of the secondary inductance coil L3 of the transformer T1, the N pole is connected to the anode of the unidirectional thyristor VS, and the P pole is connected to the control terminal of the unidirectional thyristor VS The connected diode D3, one end is connected to the control terminal of the unidirectional thyristor VS, the other end is connected to the negative pole of the polar capacitor C2, the adjustable resistor R8 is connected to the base of the triode VT3, and the negative pole is connected to the polar capacitor C2 The polarity capacitor C3 connected to the negative pole of the transistor VT3, one end is connected to the collector of the triode VT3, and the other end is grounded to the resistor R11, the positive pole is connected to the base of the triode VT2 after passing through the resistor R9, and the negative pole is connected to the emitter of the triode VT3 The polarity capacitor C4, the positive pole is connected to the non-identical end of the primary side inductance coil L4 of the transformer T2, and the negative pole is connected to the same name end of the transformer T2 secondary side inductance coil L5. The polarity capacitor C5 is connected to the transformer T2 secondary side inductance coil at one end The non-identical end of L5 is connected to the resistor R10, the other end is grounded, and the positive electrode is connected to the emitter of the triode VT2 after passing through the diode D4, and the negative electrode is connected to the same-named end of the transformer T2 secondary inductance coil L5 to form a dual transformer control circuit. The polarity capacitor C6 of the output end of the transformer is composed of; the non-identical end of the secondary inductance coil L3 of the transformer T1 is connected with the homonym end of the primary inductance coil L2; the base of the triode VT3 is connected with the cathode of the unidirectional thyristor VS; The base of the triode VT2 is connected to the anode of the one-way thyristor VS; the negative pole of the polarized capacitor C3 is also connected to the same-named terminal of the secondary inductance coil L5 of the transformer T2.

In order to ensure the actual use effect of the present invention, the transformer T1 is preferably realized by using a 300KV transformer; the transformer T2 is preferably realized by using a 1000KV EI57-30 step-up transformer; at the same time, the unidirectional thyristor VS The KP5A/50V unidirectional thyristor is preferably used for realization; the resistance range of the adjustable resistor R8 is 10kΩ-470kΩ.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

The invention can boost the voltage twice through the double transformer, and the invention can also effectively adjust or buffer the pulse wave of the voltage, so that the voltage is more stable and stable, thus ensuring the stable and smooth output of the invention The voltage can effectively ensure the stability of the brightness of the electronic energy-saving lamp when it is lit, which satisfies people's requirements well, and at the same time can prolong the service life of the electronic energy-saving lamp.

Description of drawings

Fig. 1 is a schematic diagram of the overall circuit structure of the present invention.

detailed description

The present invention will be described in further detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in Figure 1, the present invention mainly consists of transformer T1, transformer T2, unidirectional thyristor VS, triode VT1, triode VT2, triode VT3, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7 , adjustable resistor R8, resistor R9, resistor R10, resistor R11, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, polar capacitor C5, polar capacitor C6, diode D1, regulator Diode D2, diode D3, and diode D4 are composed.

In order to ensure the actual use effect of the present invention, the transformer T1 is preferably realized by using a 300KV transformer; the transformer T2 is preferably realized by using a 1000KV EI57-30 step-up transformer; at the same time, the unidirectional thyristor VS KP5A/50V unidirectional thyristor is preferred for realization; the resistance value range of the adjustable resistor R8 is 10kΩ～470kΩ; at the same time, the transistor VT1 is a 3AX81 transistor, the transistor VT2 and the transistor VT2 are both 3DD15 transistors, and the resistance value of the resistor R1 The resistance value of resistor R2 is 10kΩ, the resistance value of resistor R3~R5 is 10Ω, the resistance value of resistor R6~R9 is 1kΩ, the resistance value of resistor R10 is 51kΩ, and the resistance value of resistor R11 is 390kΩ; The capacitance of the polar capacitor C1 is 1000μF/50V, the polar capacitor C2 is a filter capacitor with a capacitance of 4.7μF/400V, the capacitance of the polar capacitor C3 is 0.22μF/600V, the polar capacitor C4 and the polar capacitor C5 are both It is a polar capacitor with a capacitance of 0.1μF/400V for charging capacitors, and the capacitance of polar capacitor C6 is 0.22μF/1200V; diode D1, diode D3 and diode D4 are all 1N5401 diodes, and voltage regulator diode D2 is a 1N4007 regulator diode.

When connected, the P pole of the diode D1 is connected to the same-named terminal of the primary side inductance coil L1 of the transformer T1 through the resistor R1, and the N pole and the emitter of the triode VT1 form the input terminal of the double transformer control circuit and are connected to the DC power supply. connected to the voltage output. One end of the resistor R2 is connected to the P pole of the diode D1, and the other end is connected to the base of the transistor VT1. The positive pole of the polarity capacitor C1 is connected to the collector of the triode VT1 through the resistor R4, and the negative pole is connected to the non-identical end of the primary side inductance coil L1 of the transformer T1. The P pole of the Zener diode D2 is connected to the base of the triode VT1 through the resistor R3, and the N pole is connected to the terminal of the same name of the primary inductance coil L2 of the transformer T1.

Wherein, one end of the resistor R5 is connected to the non-identical end of the primary side inductance coil L2 of the transformer T1, and the other end is connected to the emitter of the triode VT1. The positive pole of the polarity capacitor C2 is connected to the same-named end of the secondary inductance coil L3 of the transformer T1, and the negative pole is connected to the emitter of the triode VT1 and then grounded. One end of the resistor R6 is connected to the emitter of the triode VT2, and the other end is connected to the same-named end of the secondary inductance coil L3 of the transformer T1. The N pole of the diode D3 is connected to the anode of the one-way thyristor VS, and the P pole is connected to the control terminal of the one-way thyristor VS after passing through the resistor R7. One end of the adjustable resistor R8 is connected to the control end of the one-way thyristor VS, and the other end is connected to the negative pole of the polarity capacitor C2. The positive pole of the polarity capacitor C3 is connected to the base of the triode VT3, and the negative pole is connected to the negative pole of the polarity capacitor C2.

At the same time, one end of the resistor R11 is connected to the collector of the transistor VT3, and the other end is grounded. The positive pole of the polarity capacitor C4 is connected to the base of the triode VT2 through the resistor R9, and the negative pole is connected to the emitter of the triode VT3. The positive pole of the polarity capacitor C5 is connected to the non-identical terminal of the primary side inductance coil L4 of the transformer T2, and the negative pole is connected to the homonymous terminal of the secondary side inductive coil L5 of the transformer T2. One end of the resistor R10 is connected to the non-identical end of the secondary inductance coil L5 of the transformer T2, and the other end is grounded. The anode of the polarity capacitor C6 is connected to the N pole of the diode D4, the P pole of the diode D4 is connected to the emitter of the triode VT2, and the negative pole of the polarity capacitor C6 is connected to the same-named end of the secondary inductance coil L5 of the transformer T2 Together they form the output end of the double-transformer control circuit and are connected with the LED lamp.

The non-identical end of the secondary inductance coil L3 of the transformer T1 is connected with the homonym end of the primary inductance coil L2; the base of the triode VT3 is connected with the cathode of the unidirectional thyristor VS; the base of the triode VT2 is connected with the single It is connected to the anode of the thyristor VS; the negative pole of the polarized capacitor C3 is also connected to the terminal with the same name of the secondary inductance coil L5 of the transformer T2.

When working, transformer T1, transistor VT1, polar capacitor C1, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, diode D1 and Zener diode D2 form an oscillation circuit with a frequency of about 20Hz, and the oscillation circuit generates The oscillating pulse voltage is boosted by the secondary inductance coil L3 of the transformer T1, and the boosted voltage is filtered by the polar capacitor C1 as a filter capacitor to obtain a 300V DC voltage, and the 300V DC voltage is transmitted to the one-way thyristor VS and the triode The trigger circuit formed by VT2, diode D3 and polar capacitor C3, the trigger circuit adjusts the unsteady current in the DC voltage to make the DC voltage more stable, when the voltage on the polar capacitor C3 is saturated, the triode VT2 is turned on, The DC voltage adjusted by the trigger circuit is transmitted to the buffer circuit formed by the triode VT3, resistor R9, resistor R11 and polar capacitor C4 through the collector of the triode VT2. The buffer circuit adjusts or buffers the high pulse voltage of the input DC voltage. Keeping the pulse frequency of the DC voltage consistent can effectively improve the stability and stability of the DC voltage. When the voltage on the polar capacitor C4 is saturated, the polar capacitor C4 starts to discharge and is boosted by the transformer T2 to supply power to the LED lamp. .

The invention can boost the voltage twice through the double transformer, and the invention can also effectively adjust or buffer the pulse wave of the voltage, so that the voltage is more stable and stable, thus ensuring the stable and smooth output of the invention The voltage can effectively ensure the stability of the brightness of the electronic energy-saving lamp when it is lit, which satisfies people's requirements well, and at the same time can prolong the service life of the electronic energy-saving lamp.

According to the above embodiments, the present invention can be well realized.

Claims (4)

1. a kind of electronic energy-saving lamp controls circuits with double variable-pressures, it is characterised in that main by transformer T1, transformer T2, single To IGCT VS, triode VT1, triode VT2, triode VT3, P pole after resistance R1 with transformer T1 primary side inductance coils L1 Same Name of Ends is connected, N poles and triode VT1 emitter stage be collectively forming double variable-pressures control circuits input two poles Pipe D1, the resistance R2 that one end is connected with diode D1 P poles, the other end is connected with triode VT1 base stage, positive pole is through electricity It is connected after resistance R4 with triode VT1 colelctor electrode, negative pole is connected with transformer T1 primary side inductance coils L1 non-same polarity Polar capacitor C1, P pole be connected after resistance R3 with triode VT1 base stage, N poles and transformer T1 primary side inductance coil The voltage-regulator diode D2 that L2 Same Name of Ends is connected, one end is connected with transformer T1 primary side inductance coils L2 non-same polarity, The resistance R5 that the other end is connected with triode VT1 emitter stage, the Same Name of Ends of positive pole and transformer T1 secondary inductance coils L3 Be connected, the polar capacitor C2 that negative pole is grounded after being connected with triode VT1 emitter stage, one end and triode VT2 transmitting Pole is connected, the other end is connected with transformer T1 secondary inductance coils L3 Same Name of Ends resistance R6, N pole and unidirectional thyristor The diode D3 that VS anode is connected, P poles are connected after resistance R7 with unidirectional thyristor VS control end, one end with it is unidirectional The adjustable resistance R8 that IGCT VS control end is connected, the other end is connected with polar capacitor C2 negative pole, positive pole and three poles The polar capacitor C3 that pipe VT3 base stage is connected, negative pole is connected with polar capacitor C2 negative pole, one end is with triode VT3's Colelctor electrode is connected, the other end ground connection resistance R11, positive pole is connected after resistance R9 with triode VT2 base stage, negative pole with The polar capacitor C4 that triode VT3 emitter stage is connected, the non-same polarity phase of positive pole and transformer T2 primary side inductance coils L4 The polar capacitor C5 that connection, negative pole are connected with transformer T2 secondary inductance coils L5 Same Name of Ends, one end and transformer T2 pairs Side inductance coil L5 non-same polarity is connected, the other end ground connection resistance R10, and positive pole after diode D4 with triode VT2 emitter stage is connected, negative pole and transformer T2 secondary inductance coils L5 Same Name of Ends are collectively forming double variable-pressures control electricity The polar capacitor C6 compositions of the output end on road；The non-same polarity of the transformer T1 secondary inductance coils L3 and primary side inductance coil L2 Same Name of Ends is connected；The base stage of the triode VT3 is connected with unidirectional thyristor VS negative electrodes；The triode VT2's Base stage is connected with unidirectional thyristor VS anode；The negative pole of the polar capacitor C3 also with transformer T2 secondary inductance coils L5 Same Name of Ends be connected.

2. a kind of electronic energy-saving lamp according to claim 1 controls circuits with double variable-pressures, it is characterised in that the transformation Device T1 is 300KV transformer；The transformer T2 is 1000KV EI57-30 step-up transformers.

3. a kind of electronic energy-saving lamp according to claim 2 controls circuits with double variable-pressures, it is characterised in that described unidirectional IGCT VS is KP5A/50V unidirectional thyristors.

4. a kind of electronic energy-saving lamp according to claim 3 controls circuits with double variable-pressures, it is characterised in that described adjustable Resistance R8 Standard resistance range is 10k Ω~470k Ω.