CN106954303A - A Ripple Current Suppression Control Circuit for Electronic Energy Saving Lamps - Google Patents

Abstract

The invention discloses a ripple current suppression control circuit for an electronic energy-saving lamp, which mainly comprises a transformer T1, a transformer T2, a unidirectional thyristor VS, a triode VT1, a triode VT4, a triode VT5, a polar capacitor C2, a resistor R15 and a polar capacitor C7, wherein the anode of the polar capacitor is connected with the emitter of the triode VT4 after passing through a diode D6, and the cathode of the polar capacitor C7 and the same-name end of a transformer T2 secondary side inductance coil L5 form the output end of the ripple current suppression control circuit together. The invention can perform two times of boosting treatment on the voltage through the double transformers, and can also perform effective adjustment or buffering on the pulse wave of the voltage, so that the voltage is more stable and stable, thereby ensuring that the invention can output stable voltage.

Description

A Ripple Current Suppression Control Circuit for Electronic Energy Saving Lamps

technical field

The invention relates to a control circuit, specifically, a ripple current suppression 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 object 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 ripple current suppression control circuit for the electronic energy-saving lamp.

The present invention is realized through the following technical solutions: a ripple current suppression control circuit for electronic energy-saving lamps, mainly composed of transformer T1, transformer T2, unidirectional thyristor VS, triode VT1, triode VT4, triode VT5, 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 ripple current suppression 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 P pole connected to the same-named end of the secondary inductance coil L3 of the transformer T1, the diode D3 connected to the N pole connected to the collector of the triode VT2, and the positive pole connected to the diode after passing through the inductor L6 The P pole of D3 is connected to the polar capacitor C2 connected to the base of the triode VT2 after the negative resistor R7, one end is connected to the positive pole of the polar capacitor C2, and the other end is grounded to the resistor R8, and the N pole is connected to the transistor VT2. The base is connected, the P pole is connected to the collector of the triode VT3 after the adjustable resistor R9 Diode D4, the negative pole is connected to the P pole of the diode D4, and the positive pole is connected to the positive pole of the polar capacitor C2 Polar capacitor C4 The positive pole is connected to the emitter of the triode VT2 after passing through the resistor R6, and the negative pole is connected to the base of the triode VT3. The polar capacitor C3, one end is connected to the emitter of the triode VT4, and the other end is connected to the positive pole of the polar capacitor C4. Connected resistor R10, the N pole is connected to the anode of the unidirectional thyristor VS, the P pole is connected to the control terminal of the unidirectional thyristor VS after passing through the resistor R11, and the diode D5 is connected to the control terminal of the unidirectional thyristor VS. One end of the adjustable resistor R12 connected to the emitter of the triode VT3, the positive pole connected to the base of the triode VT5, the polarity capacitor C5 connected to the negative pole of the emitter of the triode VT3, one end connected to the collector of the triode VT5, The other end of the resistor R15 is grounded, the positive pole is connected to the base of the triode VT4 after passing through the resistor R13, the negative pole is connected to the emitter of the triode VT5, and the polarity capacitor C6 is connected to the positive pole of the non-identical terminal of the primary side inductance coil L4 of the transformer T2 Connect the polarity capacitor C7 whose negative pole is connected to the same-named end of the transformer T2 secondary inductance coil L5, one end is connected to the non-identical end of the transformer T2 secondary inductance coil L5, the other end is grounded resistor R14, and the positive electrode is connected to the diode D6 Afterwards, it is connected with the emitter of the triode VT4, and the negative pole is connected with the same-named end of the secondary inductance coil L5 of the transformer T2 to form a ripple current suppression control circuit. The polar capacitor C8 at the output end of the circuit is composed; the emitter of the triode VT3 is connected with the emitter of the triode VT1, and its collector is connected with the base of the triode VT2; the transformer T1 secondary inductance coil L3 has the same name end is connected with the end of the same name of the primary side inductance coil L2; the base of the triode VT5 is connected with the cathode of the unidirectional thyristor VS; the base of the triode VT4 is connected with the anode of the unidirectional thyristor VS; the polarity The negative pole of the capacitor C5 is also connected to the terminal with the same name of the inductance coil L5 on the secondary side 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 R12 is 10kΩ-470kΩ.

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

(1) The present invention can boost the voltage twice through the double transformer, and the present invention can also effectively adjust or buffer the pulse wave of the voltage to make the voltage more stable and stable, thereby ensuring that the present invention can output The stable and stable 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.

(2) The present invention can suppress or eliminate high-order harmonics in the voltage, making the voltage more stable and stable, thereby improving the stability of the output voltage of the present invention.

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, one-way thyristor VS, triode VT1, triode VT2, triode VT3, triode VT4, triode VT5, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5 , resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, adjustable resistor R12, resistor R13, resistor R14, resistor R15, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar Capacitor C4, polarized capacitor C5, polarized capacitor C6, polarized capacitor C7, polarized capacitor C8, diode D1, Zener diode D2, diode D3, diode D4, diode D5, and diode D6.

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 preferred for realization; the resistance value range of the adjustable resistor R12 is 10kΩ～470kΩ; at the same time, the triode VT1 is a 3AX81 triode, the triode VT2 and the triode VT3 are both 3DG170 triodes, and the triode VT4 and the triode VT4 Both are 3DD15 transistors, the resistance value of resistor R1 is 100kΩ, the resistance value of resistor R2 is 10kΩ, the resistance value of resistors R3~R5 is 10Ω, the resistance value of resistor R6 is 4Ω, the resistance value of resistor R7 and resistor R8 are both 62kΩ, the resistance value of resistor R9 is 300kΩ, the resistance value of resistors R10~R13 is 1kΩ, the resistance value of resistor R14 is 51kΩ, the resistance value of resistor R15 is 390kΩ; the capacitance value of polar capacitor C1 is 1000μF/50V, very The polar capacitor C2 is a filter capacitor with a capacitance of 4.7μF/400V, the polar capacitor C3 has a capacitance of 47μF/50V, the polar capacitor C4 has a capacitance of 100μF/25V, and the polar capacitor C5 has a capacitance of 0.22μF/ 600V, polar capacitor C6 and polar capacitor C7 are charging capacitors with a capacitance of 0.1μF/400V, and polar capacitor C8 with a capacitance of 0.22μF/1200V; diode D1, diode D5 and diode D6 are It is a 1N5401 diode, the Zener diode D2 is a 1N4007 Zener diode, and both the diode D3 and the diode D4 are 1N4012 diodes.

When connected, the P pole of the diode D1 is connected to the same-named end 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 together form the input end of the ripple current suppression 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. One end of the resistor R5 is connected to the non-identical end of the inductance coil L2 of the primary side of the transformer T1, and the other end is connected to the emitter of the triode VT1.

Wherein, the P pole of the diode D3 is connected to the terminal with the same name of the secondary inductance coil L3 of the transformer T1, and the N pole is connected to the collector of the triode VT2. The positive pole of the polarity capacitor C2 is connected to the P pole of the diode D3 after passing through the inductor L6, and the negative pole resistor R7 is then connected to the base of the transistor VT2. One end of the resistor R8 is connected to the positive pole of the polarity capacitor C2, and the other end is grounded. The N pole of the diode D4 is connected to the base of the triode VT2, and the P pole is connected to the collector of the triode VT3 through the adjustable resistor R9. The negative pole of the polarity capacitor C4 is connected to the P pole of the diode D4, and the positive pole is connected to the positive pole of the polarity capacitor C2. The positive pole of the polarity capacitor C3 is connected to the emitter of the triode VT2 through the resistor R6, and the negative pole is connected to the base of the triode VT3. One end of the resistor R10 is connected to the emitter of the triode VT4, and the other end is connected to the positive electrode of the polarity capacitor C4. The N pole of the diode D5 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 R11.

At the same time, one end of the adjustable resistor R12 is connected to the control end of the one-way thyristor VS, and the other end is connected to the emitter of the triode VT3. The anode of the polarity capacitor C5 is connected to the base of the transistor VT5, and the cathode is connected to the emitter of the transistor VT3. One end of the resistor R15 is connected to the collector of the triode VT5, and the other end is grounded. The positive pole of the polarity capacitor C6 is connected to the base of the triode VT4 through the resistor R13, and the negative pole is connected to the emitter of the triode VT5. The positive pole of the polarity capacitor C7 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 R14 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 C8 is connected to the N pole of the diode D6, the P pole of the diode D6 is connected to the emitter of the triode VT4, and the negative pole of the polarity capacitor C8 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 ripple current suppression control circuit and are connected with the LED lamp.

The emitter of the triode VT3 is connected to the emitter of the triode VT1, and its collector is connected to the base of the triode VT2; the non-identical end of the secondary inductance coil L3 of the transformer T1 is connected to the homonym end of the primary inductance coil L2 The base of the triode VT5 is connected to the cathode of the one-way thyristor VS; the base of the triode VT4 is connected to the anode of the one-way thyristor VS; the negative pole of the polarity capacitor C5 is also connected to the secondary side of the transformer T2 The same-named ends of the inductance coil L5 are connected.

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, which is transmitted to the triode VT2 and triode VT3 , a polar capacitor C2, a polar capacitor C3, a polar capacitor C4, a resistor R6, a resistor R7, a resistor R8, a resistor R9, an inductor L, a diode D3 and a diode D4 to form a ripple suppression circuit, the ripple suppression circuit can suppress the voltage The higher harmonics are suppressed or eliminated to make the voltage more stable and stable. At the same time, the ripple suppression circuit transmits the processed DC voltage to the trigger circuit formed by the one-way thyristor VS, triode VT4, diode D5 and polar capacitor C5 , 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 C5 is saturated, the triode VT4 is turned on, and the DC voltage adjusted by the trigger circuit is collected by the triode VT4 The electrode is transmitted to the buffer circuit formed by the triode VT5, resistor R13, resistor R15 and polar capacitor C6. The buffer circuit adjusts or buffers the high pulse voltage of the input DC voltage to keep the pulse frequency of the DC voltage consistent, which can effectively improve The stability and stability of the DC voltage. When the voltage on the polar capacitor C6 is saturated, the polar capacitor C6 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 voltage; at the same time, the ripple suppression circuit in the present invention can suppress or eliminate the higher harmonics in the voltage, making the voltage more stable and stable, thereby improving the stability of the output voltage of the present invention, so the present invention can effectively It ensures the stability of the brightness when the electronic energy-saving lamp is turned on, satisfies people's requirements well, and prolongs the service life of the electronic energy-saving lamp at the same time.

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

Claims (4)

1. a kind of electronic energy-saving lamp controls circuit with ripple current suppressive, it is characterised in that mainly by transformer T1, transformer T2, unidirectional thyristor VS, triode VT1, triode VT4, triode VT5, P pole after resistance R1 with transformer T1 primary side inductance Coil L1 Same Name of Ends is connected, N poles and triode VT1 emitter stage are collectively forming the defeated of ripple current suppressive control circuit Enter the diode D1 at end, one end is connected with diode D1 P poles, the resistance that the other end is connected with triode VT1 base stage R2, positive pole is connected after resistance R4 with triode VT1 colelctor electrode, negative pole and transformer T1 primary side inductance coils L1 it is non-same Polar capacitor C1, the P pole that is connected of name end is connected after resistance R3 with triode VT1 base stage, N poles and transformer T1 original The voltage-regulator diode D2 that side inductance coil L2 Same Name of Ends is connected, one end is non-of the same name with transformer T1 primary side inductance coils L2's Resistance R5, the P pole that end is connected, the other end is connected with triode VT1 emitter stage and transformer T1 secondary inductance coil The diode D3 that L3 Same Name of Ends is connected, N poles are connected with triode VT2 colelctor electrode, positive pole after inductance L6 with two poles The polar capacitor C2 that pipe D3 P poles are connected, be connected with triode VT2 base stage after negative pole resistance R7, one end and polarity electricity Appearance C2 positive pole is connected, resistance R8, the N pole of other end ground connection is connected with triode VT2 base stage, P poles are through adjustable electric The diode D4 that is connected with triode VT3 colelctor electrode after resistance R9, negative pole is connected with diode D4 P poles, positive pole and pole The polar capacitor C4 that property electric capacity C2 positive pole is connected, positive pole is connected after resistance R6 with triode VT2 emitter stage, negative pole The polar capacitor C3 being connected with triode VT3 base stage, one end is connected with triode VT4 emitter stage, the other end and pole Property electric capacity C4 the resistance R10 that is connected of positive pole, N poles are connected with unidirectional thyristor VS anode, P poles after resistance R11 with The diode D5 that unidirectional thyristor VS control end is connected, one end is connected with unidirectional thyristor VS control end, the other end The adjustable resistance R12 being connected with triode VT3 emitter stage, positive pole is connected with triode VT5 base stage, negative pole and three poles The polar capacitor C5 that pipe VT3 emitter stage is connected, one end is connected with triode VT5 colelctor electrode, the electricity of other end ground connection R15 is hindered, positive pole is connected after resistance R13 with triode VT4 base stage, negative pole is connected with triode VT5 emitter stage Polar capacitor C6, positive pole is connected with transformer T2 primary side inductance coils L4 non-same polarity, negative pole and transformer T2 secondary are electric The polar capacitor C7 that sense coil L5 Same Name of Ends is connected, one end is connected with transformer T2 secondary inductance coils L5 non-same polarity Connect, the resistance R14 of other end ground connection, and positive pole is connected after diode D6 with triode VT4 emitter stage, negative pole and change Depressor T2 secondary inductance coils L5 Same Name of Ends is collectively forming the polar capacitor of the output end of ripple current suppressive control circuit C8 is constituted；The emitter stage of the triode VT3 is connected with triode VT1 emitter stage, its colelctor electrode and triode VT2 base Pole is connected；The non-same polarity of the transformer T1 secondary inductance coils L3 is connected with primary side inductance coil L2 Same Name of Ends； The base stage of the triode VT5 is connected with unidirectional thyristor VS negative electrodes；The base stage of the triode VT4 and unidirectional thyristor VS Anode be connected；Same Name of Ends of the negative pole of the polar capacitor C5 also with transformer T2 secondary inductance coils L5 is connected.

2. a kind of electronic energy-saving lamp according to claim 1 controls circuit with ripple current suppressive, it is characterised in that institute State the transformer that transformer T1 is 300KV；The transformer T2 is 1000KV EI57-30 step-up transformers.

3. a kind of electronic energy-saving lamp according to claim 2 controls circuit with ripple current suppressive, it is characterised in that institute Unidirectional thyristor VS is stated for KP5A/50V unidirectional thyristors.

4. a kind of electronic energy-saving lamp according to claim 3 controls circuit with ripple current suppressive, it is characterised in that institute The Standard resistance range for stating adjustable resistance R12 is 10k Ω~470k Ω.