CN201355880Y - PWM pulse control circuit of HID lamp electronic ballast - Google Patents
PWM pulse control circuit of HID lamp electronic ballast Download PDFInfo
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- CN201355880Y CN201355880Y CNU2008201841697U CN200820184169U CN201355880Y CN 201355880 Y CN201355880 Y CN 201355880Y CN U2008201841697 U CNU2008201841697 U CN U2008201841697U CN 200820184169 U CN200820184169 U CN 200820184169U CN 201355880 Y CN201355880 Y CN 201355880Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The utility model relates to a PWM pulse control circuit of an HID lamp electronic ballast, which comprises a PWM module, a subtraction circuit and an integral circuit, wherein, the PWM module is respectively connected with the subtraction circuit and the integral circuit. The PWM pulse control circuit of the HID lamp electronic ballast improves the power factor, the first-order system stability and the load response speed of the HID lamp electronic ballast.
Description
Technical field
The utility model relates to a kind of HID lamp electronic ballast, relates in particular to a kind of pwm pulse control circuit of HID lamp electronic ballast.
Background technology
HID lamp (High Intensity Discharge, high-voltage gas discharging light), because of it has characteristics such as luminous efficiency height, color rendering are good, brightness stability, obtain more and more widely application at lighting fields such as automotive lighting, domestic lighting, commercial lighting and street illuminations.As everyone knows, the HID lamp is controlled with the HID lamp electronic ballast usually.
As shown in Figure 1, be the structured flowchart of existing a kind of HID lamp electronic ballast, comprise bridge rectifier filter circuit 101, inverse-excitation type transformer 102, secondary filtering circuit 103, discharge circuit 104, high frequency transformer 105, full bridge driving circuit 106, Micro Controller Unit (MCU) driving full-bridge circuit 107, single-chip microcomputer 108, direct-current voltage reducing circuit 109, SPWM pulse control circuit 110 and testing circuit 111.Wherein, bridge rectifier filter circuit 101 respectively with inverse-excitation type transformer 102, direct-current voltage reducing circuit 109 connects, inverse-excitation type transformer 102 respectively with secondary filtering circuit 103, SPWM pulse control circuit 110 connects, secondary filtering circuit 103 respectively with discharge circuit 104, full bridge driving circuit 106, testing circuit 111 connects, discharge circuit 104 is connected with high frequency transformer 105, high frequency transformer 105 is connected with the HID lamp, full bridge driving circuit 106 respectively with single-chip microcomputer 108, SPWM pulse control circuit 110, testing circuit 111, the HID lamp connects, direct-current voltage reducing circuit 109 respectively with SPWM pulse control circuit 110, single-chip microcomputer 108 connects, single-chip microcomputer 108 respectively with SPWM pulse control circuit 110, Micro Controller Unit (MCU) driving full-bridge circuit 107 connects.
The course of work of this HID lamp electronic ballast: after powering on, alternating current becomes Rectified alternating current through bridge rectifier filter circuit 101 and exports to direct-current voltage reducing circuit 109 and inverse-excitation type transformer 102, direct-current voltage reducing circuit 109 with the Rectified alternating current step-down after output stable DC electricity give single- chip microcomputer 108 and 110 power supplies of SPWM pulse control circuit, inverse-excitation type transformer 102 is controlled by SPWM pulse control circuit 110, according to the duty ratio of the pulse signal of SPWM pulse control circuit 110 output the Rectified alternating current of bridge rectifier filter circuit 101 outputs is transformed into corresponding Rectified alternating current, the Rectified alternating current of exporting after 102 conversion of inverse-excitation type transformer becomes the stable DC electricity through secondary filtering circuit 103 and delivers to discharge circuit 104 and full bridge driving circuit 106, discharge circuit charges to this stable DC electricity, be full of the back just to high frequency transformer 105 generatings, light the HID lamp by high frequency transformer 105.Simultaneously, testing circuit 111 detects the voltage of the stable DC electricity of secondary filtering circuit 103 outputs, and testing result reached single-chip microcomputer 108 by SPWM pulse control circuit 110, if this brownout, then single-chip microcomputer 108 thinks that the HID lamp is unignited, will adjust the duty ratio of the pulse signal of SPWM pulse control circuit 110 outputs, the voltage of the Rectified alternating current of inverse-excitation type transformer 102 outputs is raise, thereby the voltage of the stable DC electricity of secondary filtering circuit 103 outputs is raise, if it is enough high to detect voltage signal, then single-chip microcomputer 108 thinks that the HID lamp lights, will the Micro Controller Unit (MCU) driving full-bridge circuit be turn-offed control single chip computer driving full-bridge circuit with the conducting of certain FREQUENCY CONTROL full bridge driving circuit, and then make full bridge driving circuit the stable DC electricity of secondary filtering circuit 103 outputs can be offered the HID lamp, it is burnt away.
Yet, because the existence of the carrier wave ratio of the pulse signal of SPWM pulse control circuit output, make it be difficult to improve the frequency values of sinusoidal quantity output, and the non-linear existence that also can cause big space rate of sinusoidal quantity, the frequecy characteristic of the power device of SPWM pulse control circuit is equivalent to move in higher frequency environment, must derate use, thereby limited system frequency, cause its power factor to reduce, and the first-order system poor stability of the pulse signal of SPWM pulse control circuit output, load response speed is slow.
PWM (Pulse Width Modulation, pulse width modulation) pulse control circuit is to obtain the required waveform technology of (containing shape and amplitude) equivalently by the width of a series of pulses is modulated, its power factor height, the first-order system good stability, load response speed is fast, therefore, how the pwm pulse control circuit is applied to the HID lamp electronic ballast, to improve the power factor of existing HID lamp electronic ballast, first-order system is stablized and load response speed is problem to be solved in the utility model.
The utility model content
The utility model provides a kind of pwm pulse control circuit of HID lamp electronic ballast, to improve the power factor of existing HID lamp electronic ballast, the stable and load response speed of first-order system.
For achieving the above object, the utility model provides a kind of pwm pulse control circuit of HID lamp electronic ballast, comprises the PWM module, also comprises: comparison circuit and integrating circuit, described PWM module are connected with described integrating circuit with described comparison circuit respectively.
The pwm pulse control circuit of HID lamp electronic ballast of the present utility model, described PWM module comprises UC3843 chip, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, capacitor C 16, capacitor C 17, capacitor C 18, capacitor C 19, capacitor C 20, capacitor C 21, pin 5, pin 6 and pin 7;
7 pins of described UC3843 chip are connected with described pin 5 with described capacitor C 16, the other end ground connection of described capacitor C 16, end after described resistance R 16 and described capacitor C 16 parallel connections is connected with 1 pin of described UC3843 chip, the other end is connected with 2 pins of described UC3843 chip, 8 pins of described UC3843 chip are connected with described resistance R 17 with described capacitor C 18, the other end ground connection of described capacitor C 18,4 pins of described UC3843 chip and the other end of described resistance R 17, described capacitor C 19 is connected with described electric capacity 20, the other end ground connection of described capacitor C 19, the other end of described capacitor C 20 is connected with described resistance R 18,3 pins of described UC3843 chip and the other end of described resistance R 18, described capacitor C 21 is connected with described resistance R 20, the other end ground connection of described capacitor C 21, described resistance R 20 other ends are connected with described pin 7,5 pin ground connection of described UC3843 chip, 6 pins of described UC3843 chip are connected with described resistance R 19, and the other end of described resistance R 19 is connected with described pin 6.
The pwm pulse control circuit of HID lamp electronic ballast of the present utility model, described comparison circuit comprises: operational amplifier A 1, triode Q8, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, diode D15, diode D16, capacitor C 15, pin 1, pin 2, pin 3 and pin 4;
The output of the in-phase input end of described operational amplifier A 1 and described diode D15, described resistance R 12 is connected with described resistance R 11, the other end of described resistance R 12 is connected with described resistance R 13, the other end of described resistance R 13 is connected with described pin 3, the other end of described resistance R 11 is connected with described pin 1 with described resistance R 10 backs in parallel, the other end ground connection of described R10, the input end grounding of described diode D15, the reverse inter-input-ing ending grounding of described operational amplifier A 1, the output of described operational amplifier A 1 is connected with described capacitor C 15 with the output of described diode D16, the other end ground connection of described capacitor C 15, the input of described diode D16 is connected with the collector electrode of described triode Q8 and 1 pin of described UC3843 chip respectively, described resistance R 14 is connected with described pin 4 with described resistance R 15 backs in parallel, the other end of described resistance R 14 is connected with described pin 2, the other end of described resistance R 15 is connected with the base stage of described triode Q8, the grounded emitter of described triode Q8.
The pwm pulse control circuit of HID lamp electronic ballast of the present utility model, described integrating circuit comprises: operational amplifier A 2, operational amplifier A 3, field effect transistor Q9, resistance R 21, resistance R 22, resistance R 23, resistance R 24, resistance R 25, resistance R 26, resistance R 27, resistance R 28, resistance R 29, resistance R 30, resistance R 31, resistance R 58, diode D17, diode D18, capacitor C 22, capacitor C 25, capacitor C 26, capacitor C 27, capacitor C 28, capacitor C 29, pin 8, pin 9, pin 10, pin 11, pin 12 and pin 13;
Described operational amplifier A 2 in-phase input ends are connected with described resistance R 25, the other end ground connection of described resistance R 25, described operational amplifier A 2 inverting inputs are connected with described resistance R 24, the output of the other end of described resistance R 24 and described diode D17, described resistance R 22, described capacitor C 22, the source electrode of described resistance R 23 and described field effect transistor Q9 is connected, the input end grounding of described diode D17, the other end of described resistance R 22 is connected with described pin 9, the other end of the output of described operational amplifier A 2 and described capacitor C 22, described resistance R 58 is connected with described resistance R 26, be connected with the drain electrode of described field effect transistor Q9 after the other end of described resistance R 23 and described resistance R 58 other end parallel connections, the grid of described field effect transistor Q9 is connected with described resistance R 21, the other end of described resistance R 21 is connected with described pin 8, the other end of the in-phase input end of described operational amplifier A 3 and described resistance R 26, the input of described diode D18, described capacitor C 29 is connected with described pin 12, the output of described diode D18 is connected with described pin 11, the other end ground connection of described capacitor C 29, the inverting input of described operational amplifier A 3 is connected with described resistance R 27 with described capacitor C 28, the output of described operational amplifier A 3 is connected with described resistance R 31 with the other end of described capacitor C 28, the other end of described resistance R 27 is connected with described capacitor C 25 with described resistance R 28, the other end ground connection of described capacitor C 25, the other end of described resistance R 28 is connected with described capacitor C 26 with described resistance R 29, the other end ground connection of described capacitor C 26, the other end of described resistance R 29 is connected with described capacitor C 27 with described resistance R 30, the other end ground connection of described capacitor C 27, the other end of described resistance R 30 is connected with 2 pins of described UC3843 chip.
HID lamp electronic ballast of the present utility model has adopted power factor height, first-order system good stability, the fireballing pwm pulse control circuit of load response replaces existing SPWM pulse control circuit, thereby has improved HID lamp electronic ballast power factor, first-order system stability and load response speed.
Description of drawings
Fig. 1 is the structured flowchart of existing HID electric ballast;
Fig. 2 is the structured flowchart that contains the HID electric ballast of the utility model pwm pulse control circuit;
Fig. 3 is the electrical schematic diagram of the utility model pwm pulse control circuit.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:
Pwm pulse control circuit for the clearer description the utility model HID electric ballast of energy is necessary its application scenarios (the HID electric ballast that promptly contains the utility model pwm pulse control circuit) is described.
With reference to figure 2, the HID electric ballast that contains the utility model pwm pulse control circuit comprises bridge rectifier filter circuit 201, inverse-excitation type transformer 202, secondary filtering circuit 203, discharge circuit 204, high frequency transformer 205, full bridge driving circuit 206, Micro Controller Unit (MCU) driving full-bridge circuit 207, single-chip microcomputer 208, direct-current voltage reducing circuit 209, pwm pulse control circuit 210 and testing circuit 211.Wherein, bridge rectifier filter circuit 201 respectively with inverse-excitation type transformer 202, direct-current voltage reducing circuit 209 connects, inverse-excitation type transformer 202 respectively with secondary filtering circuit 203, SPWM pulse control circuit 210 connects, secondary filtering circuit 203 respectively with discharge circuit 204, full bridge driving circuit 206, testing circuit 211 connects, discharge circuit 204 is connected with high frequency transformer 205, high frequency transformer 205 is connected with the HID lamp, full bridge driving circuit 206 respectively with single-chip microcomputer 208, pwm pulse control circuit 210, testing circuit 211, the HID lamp connects, direct-current voltage reducing circuit 209 respectively with pwm pulse control circuit 210, single-chip microcomputer 208 connects, single-chip microcomputer 208 respectively with pwm pulse control circuit 210, Micro Controller Unit (MCU) driving full-bridge circuit 207 connects.
With reference to figure 3, the pwm pulse control circuit of HID lamp electronic ballast of the present utility model specifically comprises comparison circuit 201, PWM module 302 and integrating circuit 303.Wherein, PWM module 302 is connected with integrating circuit 303 with comparison circuit 301 respectively.
The said PWM pulse control circuit, wherein PWM module 201 comprises UC3843 chip, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, capacitor C 16, capacitor C 17, capacitor C 18, capacitor C 19, capacitor C 20, capacitor C 21, pin 5, pin 6 and pin 7.Wherein:
7 pins of UC3843 chip are connected with pin 5 with capacitor C 16, the other end ground connection of capacitor C 16, end after resistance R 16 and capacitor C 16 parallel connections is connected with 1 pin of UC3843 chip, the other end is connected with 2 pins of UC3843 chip, 8 pins of UC3843 chip are connected with resistance R 17 with capacitor C 18, the other end ground connection of capacitor C 18,4 pins of UC3843 chip and the other end of resistance R 17, capacitor C 19 is connected with electric capacity 20, the other end ground connection of capacitor C 19, the other end of capacitor C 20 is connected with resistance R 18,3 pins of UC3843 chip and the other end of resistance R 18, capacitor C 21 is connected with resistance R 20, the other end ground connection of capacitor C 21, resistance R 20 other ends are connected with pin 7,5 pin ground connection of UC3843 chip, 6 pins of UC3843 chip are connected with resistance R 19, and the other end of resistance R 19 is connected with pin 6.
The said PWM pulse control circuit, wherein comparison circuit 201 comprises: operational amplifier A 1, triode Q8, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, diode D15, diode D16, capacitor C 15, pin 1, pin 2, pin 3 and pin 4, wherein:
The output of the in-phase input end of operational amplifier A 1 and diode D15, resistance R 12 is connected with resistance R 11, the other end of resistance R 12 is connected with resistance R 13, the other end of resistance R 13 is connected with pin 3, the other end of resistance R 11 is connected with pin 1 with resistance R 10 backs in parallel, the other end ground connection of R10, the input end grounding of diode D15, the reverse inter-input-ing ending grounding of operational amplifier A 1, the output of operational amplifier A 1 is connected with capacitor C 15 with the output of diode D16, the other end ground connection of capacitor C 15, the input of diode D16 is connected with the collector electrode of triode Q8 and 1 pin of UC3843 chip respectively, resistance R 14 is connected with pin 4 with resistance R 15 backs in parallel, the other end of resistance R 14 is connected with pin 2, and the other end of resistance R 15 is connected with the base stage of triode Q8, the grounded emitter of triode Q8.
The said PWM pulse control circuit, wherein integrating circuit 203 comprises: operational amplifier A 2, operational amplifier A 3, field effect transistor Q9, resistance R 21, resistance R 22, resistance R 23, resistance R 24, resistance R 25, resistance R 26, resistance R 27, resistance R 28, resistance R 29, resistance R 30, resistance R 31, resistance R 58, diode D17, diode D18, capacitor C 22, capacitor C 25, capacitor C 26, capacitor C 27, capacitor C 28, capacitor C 29, pin 8, pin 9, pin 10, pin 11, pin 12 and pin 13, wherein:
Operational amplifier A 2 in-phase input ends with state resistance R 25 and be connected, the other end ground connection of resistance R 25, operational amplifier A 2 inverting inputs are connected with resistance R 24, the output of the other end of resistance R 24 and diode D17, resistance R 22, capacitor C 22, resistance R 23 is connected with the source electrode of field effect transistor Q9, the input end grounding of diode D17, the other end of resistance R 22 is connected with pin 9, the other end of the output of operational amplifier A 2 and capacitor C 22, resistance R 58 is connected with resistance R 26, be connected with the drain electrode of field effect transistor Q9 after the other end of resistance R 23 and resistance R 58 other end parallel connections, the grid of field effect transistor Q9 is connected with described resistance R 21, the other end of described resistance R 21 is connected with described pin 8, the other end of the in-phase input end of described operational amplifier A 3 and described resistance R 26, the input of diode D18, capacitor C 29 is connected with pin 12, the output of diode D18 is connected with pin 11, the other end ground connection of capacitor C 29, the inverting input of operational amplifier A 3 is connected with described resistance R 27 with capacitor C 28, the output of operational amplifier A 3 is connected with resistance R 31 with the other end of capacitor C 28, the other end of resistance R 27 is connected with capacitor C 25 with resistance R 28, the other end ground connection of capacitor C 25, the other end of resistance R 28 is connected with capacitor C 26 with resistance R 29, the other end ground connection of capacitor C 26, the other end of resistance R 29 is connected with capacitor C 27 with resistance R 30, the other end ground connection of capacitor C 27, the other end of resistance R 30 is connected with 2 pins of described UC3843 chip.
The pwm pulse control circuit course of work of HID lamp electronic ballast of the present utility model is as follows:
When concrete the application, the pin 1 of this pwm pulse control circuit and pin 11 meet 5V direct voltage VDD, pin 2, pin 5 and pin 10 meet 15V direct voltage Vcc, pin 3 meets the negative voltage VSS that the inverse-excitation type transformer is exported, pin 4, pin 8, pin 12 and pin 13 are connected with single-chip microcomputer, pin 9 is connected with testing circuit, and pin 6 is connected with the inverse-excitation type transformer with pin 7.
After HID powers on, testing circuit detects the output of full bridge driving circuit, and with the operational amplifier A 2 of detection signal by pin 9 input pwm pulse control circuits, and then by pin 12 detection signal is input to single-chip microcomputer by the output of operational amplifier A 2, single-chip microcomputer compares the detection signal of input with the threshold value that sets in advance, if detection signal is too faint, single-chip microcomputer will be to pin 8 output high level so, make field effect transistor Q9 conducting, resistance R 23 is by short circuit, the multiplication factor of operational amplifier A 2 increases, corresponding single-chip microcomputer will increase the width of pulse of inverting input output of the operational amplifier A 3 of pwm pulse control circuit by pin 13,6 pins of the UC3843 chip of corresponding pwm pulse control circuit will become greatly by the duty ratio of the PWM control impuls of pin 6 outputs, and the PWM control impuls that the duty ratio change is big is controlled the inverse-excitation type transformer by the field effect transistor as electronic switch of inverse-excitation type transformer more then.
Yet; the duty ratio of PWM control impuls becomes the positive voltage that will cause the inverse-excitation type transformer to be exported greatly and uprises; it is too negative that the negative voltage of output will become; too high for preventing output voltage; this just need suppress with the operational amplifier A 1 of the comparison circuit of pwm pulse control circuit (specifically to realize with the voltage of negative voltage Vss centre by measuring 5V direct current VDD; the output signal of operational amplifier A 1 will make the PWM control impuls duty ratio of pwm pulse control circuit output diminish); if detection signal is still too high; single-chip microcomputer just reduces pulse duration to operational amplifier A 3 output by pin 13 so; the duty ratio of PWM control impuls is reduced; if detection signal is still very high; single-chip microcomputer will be by the comparison circuit output high level of pin 4 to the pwm pulse control circuit so; with triode Q8 conducting; the UC3843 chip of the generation PWM control impuls of pwm pulse control circuit is turn-offed, thereby protected the HID lamp.
When detected detection signal is suitable (with the described threshold value coupling that sets in advance), just think that the HID lamp normally starts, single-chip microcomputer will drive full-bridge circuit by control single chip computer, the Micro Controller Unit (MCU) driving full-bridge circuit is turn-offed with the conducting of the FREQUENCY CONTROL full bridge driving circuit of about 100Hz, the negative direct current of the generation of inverse-excitation type transformer is burnt away by full bridge driving circuit driving HID lamp.Simultaneously, the UC3843 chip of pwm pulse control circuit also detects the voltage of the field effect transistor of inverse-excitation type transformer by pin 7, when the magnitude of voltage of the UC3843 chip that enters the pwm pulse control circuit by pin 7 surpasses the reference voltage of UC3843 chip internal, the UC3843 chip closes output automatically, preventing that the overvoltage of HID lamp from damaging, thereby prolonged the useful life of HID lamp.
HID lamp electronic ballast of the present utility model has adopted power factor height, first-order system good stability; the fireballing pwm pulse control circuit of load response replaces existing SPWM pulse control circuit; thereby HID lamp electronic ballast power factor, first-order system stability and load response speed have been improved; and HID lamp electronic ballast of the present utility model; the pwm pulse control circuit also has over-voltage protecting function, thereby has prolonged the useful life of HID lamp.
Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (4)
1, a kind of pwm pulse control circuit of HID lamp electronic ballast comprises the PWM module, it is characterized in that, also comprises: comparison circuit and integrating circuit, described PWM module are connected with described integrating circuit with described comparison circuit respectively.
2, the pwm pulse control circuit of HID lamp electronic ballast according to claim 1, it is characterized in that described PWM module comprises UC3843 chip, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, capacitor C 16, capacitor C 17, capacitor C 18, capacitor C 19, capacitor C 20, capacitor C 21, pin 5, pin 6 and pin 7;
7 pins of described UC3843 chip are connected with described pin 5 with described capacitor C 16, the other end ground connection of described capacitor C 16, end after described resistance R 16 and described capacitor C 16 parallel connections is connected with 1 pin of described UC3843 chip, the other end is connected with 2 pins of described UC3843 chip, 8 pins of described UC3843 chip are connected with described resistance R 17 with described capacitor C 18, the other end ground connection of described capacitor C 18,4 pins of described UC3843 chip and the other end of described resistance R 17, described capacitor C 19 is connected with described electric capacity 20, the other end ground connection of described capacitor C 19, the other end of described capacitor C 20 is connected with described resistance R 18,3 pins of described UC3843 chip and the other end of described resistance R 18, described capacitor C 21 is connected with described resistance R 20, the other end ground connection of described capacitor C 21, described resistance R 20 other ends are connected with described pin 7,5 pin ground connection of described UC3843 chip, 6 pins of described UC3843 chip are connected with described resistance R 19, and the other end of described resistance R 19 is connected with described pin 6.
3, the pwm pulse control circuit of HID lamp electronic ballast according to claim 2, it is characterized in that described comparison circuit comprises: operational amplifier A 1, triode Q8, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, diode D15, diode D16, capacitor C 15, pin 1, pin 2, pin 3 and pin 4;
The output of the in-phase input end of described operational amplifier A 1 and described diode D15, described resistance R 12 is connected with described resistance R 11, the other end of described resistance R 12 is connected with described resistance R 13, the other end of described resistance R 13 is connected with described pin 3, the other end of described resistance R 11 is connected with described pin 1 with described resistance R 10 backs in parallel, the other end ground connection of described R10, the input end grounding of described diode D15, the reverse inter-input-ing ending grounding of described operational amplifier A 1, the output of described operational amplifier A 1 is connected with described capacitor C 15 with the output of described diode D16, the other end ground connection of described capacitor C 15, the input of described diode D16 is connected with the collector electrode of described triode Q8 and 1 pin of described UC3843 chip respectively, described resistance R 14 is connected with described pin 4 with described resistance R 15 backs in parallel, the other end of described resistance R 14 is connected with described pin 2, the other end of described resistance R 15 is connected with the base stage of described triode Q8, the grounded emitter of described triode Q8.
4, the pwm pulse control circuit of HID lamp electronic ballast according to claim 3, it is characterized in that described integrating circuit comprises: operational amplifier A 2, operational amplifier A 3, field effect transistor Q9, resistance R 21, resistance R 22, resistance R 23, resistance R 24, resistance R 25, resistance R 26, resistance R 27, resistance R 28, resistance R 29, resistance R 30, resistance R 31, resistance R 58, diode D17, diode D18, capacitor C 22, capacitor C 25, capacitor C 26, capacitor C 27, capacitor C 28, capacitor C 29, pin 8, pin 9, pin 10, pin 11, pin 12 and pin 13;
Described operational amplifier A 2 in-phase input ends are connected with described resistance R 25, the other end ground connection of described resistance R 25, described operational amplifier A 2 inverting inputs are connected with described resistance R 24, the output of the other end of described resistance R 24 and described diode D17, described resistance R 22, described capacitor C 22, the source electrode of described resistance R 23 and described field effect transistor Q9 is connected, the input end grounding of described diode D17, the other end of described resistance R 22 is connected with described pin 9, the other end of the output of described operational amplifier A 2 and described capacitor C 22, described resistance R 58 is connected with described resistance R 26, be connected with the drain electrode of described field effect transistor Q9 after the other end of described resistance R 23 and described resistance R 58 other end parallel connections, the grid of described field effect transistor Q9 is connected with described resistance R 21, the other end of described resistance R 21 is connected with described pin 8, the other end of the in-phase input end of described operational amplifier A 3 and described resistance R 26, the input of described diode D18, described capacitor C 29 is connected with described pin 12, the output of described diode D18 is connected with described pin 11, the other end ground connection of described capacitor C 29, the inverting input of described operational amplifier A 3 is connected with described resistance R 27 with described capacitor C 28, the output of described operational amplifier A 3 is connected with described resistance R 31 with the other end of described capacitor C 28, the other end of described resistance R 27 is connected with described capacitor C 25 with described resistance R 28, the other end ground connection of described capacitor C 25, the other end of described resistance R 28 is connected with described capacitor C 26 with described resistance R 29, the other end ground connection of described capacitor C 26, the other end of described resistance R 29 is connected with described capacitor C 27 with described resistance R 30, the other end ground connection of described capacitor C 27, the other end of described resistance R 30 is connected with 2 pins of described UC3843 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201841697U CN201355880Y (en) | 2008-12-30 | 2008-12-30 | PWM pulse control circuit of HID lamp electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201841697U CN201355880Y (en) | 2008-12-30 | 2008-12-30 | PWM pulse control circuit of HID lamp electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355880Y true CN201355880Y (en) | 2009-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201841697U Expired - Fee Related CN201355880Y (en) | 2008-12-30 | 2008-12-30 | PWM pulse control circuit of HID lamp electronic ballast |
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| CN (1) | CN201355880Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114071820A (en) * | 2021-11-19 | 2022-02-18 | 杭州春来科技有限公司 | Krypton light source driving circuit |
-
2008
- 2008-12-30 CN CNU2008201841697U patent/CN201355880Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114071820A (en) * | 2021-11-19 | 2022-02-18 | 杭州春来科技有限公司 | Krypton light source driving circuit |
| CN114071820B (en) * | 2021-11-19 | 2023-10-31 | 杭州泽天春来科技有限公司 | Krypton lamp light source driving circuit |
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