CN204992681U - Work light circuit - Google Patents

Work light circuit Download PDF

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Publication number
CN204992681U
CN204992681U CN201520652869.4U CN201520652869U CN204992681U CN 204992681 U CN204992681 U CN 204992681U CN 201520652869 U CN201520652869 U CN 201520652869U CN 204992681 U CN204992681 U CN 204992681U
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China
Prior art keywords
resistance
diode
electric capacity
voltage
battery
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Expired - Fee Related
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CN201520652869.4U
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Chinese (zh)
Inventor
陈水豪
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Shenzhen Good Lighting Co Ltd
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Shenzhen Good Lighting Co Ltd
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Priority to CN201520652869.4U priority Critical patent/CN204992681U/en
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Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The utility model relates to a work light circuit, charging circuit, battery, the charge and discharge management circuit who has the LED pilot lamp, discharge circuit and the lamp plate be connected including charging socket, with charging socket, charging circuit is used for stepping down the input voltage who comes from charging socket, and the processing is back charges for the battery, the real -time battery voltage that charge and discharge management circuit is used for detecting charging circuit's input voltage and detects the battery to make the LED pilot lamp send corresponding light according to input voltage and real -time battery voltage, the discharge circuit is used for stepping up the battery voltage who comes from the battery and sends to the lamp plate after handling. Wide input charging voltage is realized in order to charge for the battery to the voltage that can become to be applicable to the battery to 24V's voltage conversion with 12V through charging circuit, when charge and discharge management circuit detect the battery be in charge, be full of or the condition of different states such as under -voltage under, MCU control pilot lamp sends different lights to remind the user, prevent that the battery from causing the damage.

Description

A kind of work light circuit
Technical field
The utility model relates to lighting technology, particularly relates to a kind of work light circuit.
Background technology
Work light is the light fixture of the projecting environment of illumination of specifying on face to be illuminated, and being mainly used in provides illumination when outdoor or office operation.Various advantages such as the energy-conserving and environment-protective of LED, life-span are long and being widely used, are also applied to work light gradually.LED work light in the past is directly powered by lithium battery; when runs out of battery power in use procedure then must change battery; there is the design of battery being powered by a charging circuit connection external power source afterwards; but this charging circuit does not possess over-charge protective, easily causes damage to battery.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of work light circuit, and it can available protecting battery.
For achieving the above object, the utility model adopts following technical scheme:
A kind of work light circuit, comprises charging socket, the charging circuit be connected with charging socket, battery, management of charging and discharging circuit, discharge circuit and lamp plate with LED light; Described charging circuit, charges the battery after carrying out step-down process for the input voltage of self-charging in future socket; Described management of charging and discharging circuit, for detecting the input voltage of charging circuit and detecting the real-time cell voltage of battery, and makes LED light send corresponding light according to input voltage and real-time cell voltage; Described discharge circuit, is sent to lamp plate after the cell voltage from battery being carried out boosting process.
Preferably, described lamp plate is LED.
Preferably, described charging circuit comprises diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, inductance L 1 and step-down chip U1;
The positive pole of described diode D1 is all connected with the positive terminal of charging socket with the positive pole of diode D2, the negative pole of described diode D1, the negative pole of diode D2, one end of electric capacity C1 is all connected with the input of step-down chip U1 with one end of electric capacity C2, one end of described inductance L 1, the negative pole of diode D3 is all connected with the output of step-down chip U1 with the negative pole of diode D4, the positive pole of described diode D3 is all connected with one end of electric capacity C3 with the positive pole of diode D4, the other end of electric capacity C3, the positive pole of diode D5 is all connected with the other end of inductance L 1 with the positive pole of diode D6, one end of one end of described resistance R1, one end of resistance R2, resistance R3 is all connected with the feedback end of step-down chip U1 with one end of electric capacity C4, the other end of the positive pole of described diode D3, the positive pole of diode D4, resistance R1 and the equal ground connection of the other end of resistance R2, the other end of described electric capacity C4 is all connected with one end of battery with the other end of resistance R3, one end of the other end of described battery, one end of resistance R4, resistance R5 is all connected with the test side of step-down chip U1 with one end of resistance R6, the equal ground connection of negative pole end of described resistance R4, resistance R5, electric capacity C1 and charging socket, one end of the negative pole of described diode D2, the other end of resistance R3, resistance R5, the other end of resistance R6, the negative pole of diode D5 are all connected with management of charging and discharging circuit with the negative pole of diode D6.
Preferred further, the model of described step-down chip U1 is XL4101.
Preferred further, management of charging and discharging circuit comprises resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, diode D7, diode D8, diode D9, pressurizer, voltage-stabiliser tube DZ1, switch, MCU and LED light;
The negative pole of the cathode connecting diode D2 of described diode D7, the negative pole of diode D7, one end of electric capacity C5 are all connected with the input of pressurizer with the negative pole of diode D8, one end of described electric capacity C6 connects the output of pressurizer, and equal ground connection is held on the other end of battery C5, the other end of electric capacity C6 and the ground of pressurizer, described switch is all connected with discharge circuit with the positive pole of diode D8, and described switch also connects the negative pole of diode D3, one end of described resistance R7 is all connected with the control end of MCU with one end of resistance R8, the other end ground connection of described resistance R7, and the other end of resistance R8 connects the positive pole of diode D8, one end of described resistance R9, one end of resistance R10 is all connected with the battery voltage detection end of MCU with one end of electric capacity C7, the other end of the other end contact resistance R3 of described resistance R9, one end of described resistance R11, the negative pole of diode D9 is all connected with the input voltage measurement end of MCU with one end of electric capacity C8, the other end of described resistance R11 connects the negative pole of diode D2, one end of described electric capacity C9 is all connected with the current detecting end of MCU with the other end of resistance R6, the other end of described electric capacity C7, the other end of electric capacity C8, the other end of electric capacity C9, the positive pole of diode D9, equal ground connection is held on the other end of resistance R10 and the ground of MCU, one end of described resistance R12 connects first output of MCU, and one end of resistance R13 connects second output of MCU, and the other end of described resistance R12 is all connected with indicator light with the other end of resistance R13, one end of described resistance R14 is all connected with the control end of MCU with the positive terminal of voltage-stabiliser tube DZ1, and the negative pole end of described voltage-stabiliser tube DZ1 connects discharge circuit, and the other end of described resistance R14 is all connected with the output of pressurizer with the feeder ear of MCU.
Preferred further, the model of described pressurizer is LM7805.
Preferred further, described discharge circuit comprises resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, diode D10, diode D11, voltage-stabiliser tube DZ2, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, inductance L 2 and boost chip U2;
One end of described resistance R15, one end of inductance L 2, one end of electric capacity C10 and the input of boost chip U2 are all connected with the positive pole of diode D8; One end of described electric capacity C11 connects the input of boost chip U2, the other end of described resistance R15 connects one end of electric capacity C12, the other end of electric capacity C12 is connected the positive pole of diode D10 with the other end of inductance L 2, the negative pole of described diode D10 connects one end of electric capacity C13, one end of described resistance R16, one end of resistance R17, one end of resistance R18 are all connected with the other end of electric capacity C13 with one end of resistance R19, and the other end of the other end of described resistance R16, the other end of resistance R17, resistance R18 is all connected with lamp plate with the other end of resistance R19; The positive pole of described diode D11 connects the output of boost chip U2, and the positive pole of this diode D11 also connects the positive pole of diode D10, and the negative pole of described diode D11 is all connected with lamp plate with the negative pole end of voltage-stabiliser tube DZ2; The positive terminal of described voltage-stabiliser tube DZ2 is all connected with the feedback end of boost chip U2 with one end of resistance R20, and one end of this resistance R20 also connects the negative pole end of voltage-stabiliser tube DZ1, the other end of the other end contact resistance R16 of described resistance R20; One end of described resistance R21 is all connected with the Enable Pin of boost chip U2 with one end of electric capacity C11, and the ground end of boost chip U2, the other end of electric capacity C10, the other end of electric capacity C11 and the other end of electric capacity C13 are all connected with the other end of resistance R21.
Compared to existing technology, the beneficial effects of the utility model are:
The voltage transitions of 12V to 24V can be become to be applicable to the voltage of battery to charge the battery by charging circuit by the utility model, realize wide input charging voltage, when management of charging and discharging electric circuit inspection be in charging to battery, be full of or the different conditions such as under-voltage when, MCU controls indicator light and sends different lights, with reminding user, prevent battery from causing damage.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present utility model.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
See Fig. 1, a kind of work light circuit that the utility model provides, it comprises charging socket 1, the charging circuit be connected with charging socket 1, battery 2, management of charging and discharging circuit, discharge circuit and lamp plate 5 with LED light 3; Charging circuit, charges to after carrying out step-down process for the input voltage of self-charging in future socket 1 battery 2; Management of charging and discharging circuit, for detecting the input voltage of charging circuit and detecting the real-time cell voltage of battery 2, and makes LED light 3 send corresponding light according to input voltage and real-time cell voltage; Discharge circuit, is sent to lamp plate after the cell voltage from battery being carried out boosting process.The lamp plate 5 of the present embodiment is preferably LED lamp panel.
The voltage that the voltage of the charging circuit in the future 12V to 24V of self-charging socket 1 changes into applicable battery 2 charges to battery 2, has over-charge protective function, prevents battery 2 from damaging.When management of charging and discharging electric circuit inspection be full of to battery 2, under-voltage or charging different conditions time, control LED light 3 send different lights, to point out user.
Concrete, charging circuit comprises diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, inductance L 1 and step-down chip U1, the positive pole of diode D1 is all connected with the positive terminal of charging socket 1 with the positive pole of diode D2, the negative pole of described diode D1, the negative pole of diode D2, one end of electric capacity C1 is all connected with the input vin of step-down chip U1 with one end of electric capacity C2, one end of described inductance L 1, the negative pole of diode D3 is all connected with the output sw of step-down chip U1 with the negative pole of diode D4, the positive pole of diode D3 is all connected with one end of electric capacity C3 with the positive pole of diode D4, the other end of electric capacity C3, the positive pole of diode D5 is all connected with the other end of inductance L 1 with the positive pole of diode D6, one end of one end of described resistance R1, one end of resistance R2, resistance R3 is all connected with the feedback end fb of step-down chip U1 with one end of electric capacity C4, the other end of the positive pole of described diode D3, the positive pole of diode D4, resistance R1 and the equal ground connection of the other end of resistance R2, the other end of electric capacity C4 is all connected with one end of battery with the other end of resistance R3, one end of the other end of battery, one end of resistance R4, resistance R5 is all connected with the test side cs of step-down chip U1 with one end of resistance R6, the equal ground connection of negative pole end of described resistance R4, resistance R5, electric capacity C1 and charging socket, one end of the negative pole of diode D2, the other end of resistance R3, resistance R5, the other end of resistance R6, the negative pole of diode D5 are all connected with management of charging and discharging circuit with the negative pole of diode D6.
The model of above-mentioned step-down chip U1 preferably but be not limited to XL4101.The voltage of step-down chip U1 self-charging in the future socket 1 carries out step-down conversion, and the power voltage supply pond converting 8.4V to uses.
Management of charging and discharging circuit comprises resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, diode D7, diode D8, diode D9, pressurizer 6, voltage-stabiliser tube DZ1, switch 4, MCU and LED light 3, the negative pole of the cathode connecting diode D2 of diode D7, the negative pole of diode D7, one end of electric capacity C5 are all connected with the input vin1 of pressurizer 6 with the negative pole of diode D8, one end of electric capacity C6 connects the output vout1 of pressurizer 6, the equal ground connection of ground end gnd1 of the other end of battery C5, the other end of electric capacity C6 and pressurizer 6, switch 4 is all connected with discharge circuit with the positive pole of diode D8, and switch 4 also connects the negative pole of diode D3, one end of resistance R7 is all connected with the control end a of MCU with one end of resistance R8, the other end ground connection of resistance R7, and the other end of resistance R8 connects the positive pole of diode D8, one end of resistance R9, one end of resistance R10 and one end of electric capacity C7 are all connected with the battery voltage detection end b of MCU, the other end of the other end contact resistance R3 of described resistance R9, one end of resistance R11, the negative pole of diode D9 and one end of electric capacity C8 are all connected with the input voltage measurement end c of MCU, the other end of resistance R11 connects the negative pole of diode D2, one end of electric capacity C9 and the other end of resistance R6 are all connected with the current detecting end d of MCU, the other end of electric capacity C7, the other end of electric capacity C8, the other end of electric capacity C9, the positive pole of diode D9, equal ground connection is held on the other end of resistance R10 and the ground of MCU, one end of resistance R12 connects the first output g of MCU, and one end of resistance R13 connects the second output h of MCU, and the other end of resistance R12 is all connected with LED light with the other end of resistance R13, one end of resistance R14 is all connected with the control end f of MCU with the positive terminal of voltage-stabiliser tube DZ1, and the negative pole end of voltage-stabiliser tube DZ1 connects discharge circuit, and the other end of resistance R14 is all connected with the output of pressurizer with the feeder ear i of MCU.The model of pressurizer 6 is preferably LM7805.
Management of charging and discharging electric circuit inspection input voltage and cell voltage, if when input voltage being detected, then illustrate that now battery is just in charged state, afterwards judge whether cell voltage reaches capacity preset value, if reach capacity preset value, judge that battery is full of, MCU controls LED light and sends light; If determine cell voltage not reach capacity preset value, then illustrate that battery charges, MCU controls LED light and sends another kind of light; If when five input voltages being detected, then whether detect cell voltage lower than under-voltage preset value, if detect, cell voltage is lower than under-voltage preset value, then control LED light and send light, reminding user charges.Three kinds of above-mentioned lights all utilize different colors to distinguish, and can select three kinds without the LED light of color.
Discharge circuit comprises resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, diode D10, diode D11, voltage-stabiliser tube DZ2, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, inductance L 2 and boost chip U2; One end of resistance R15, one end of inductance L 2, one end of electric capacity C10 and the input vin2 of boost chip U2 are all connected with the positive pole of diode D8; One end of electric capacity C11 connects the input vin2 of boost chip U2, the other end of resistance R15 connects one end of electric capacity C12, the other end of electric capacity C12 is connected the positive pole of diode D10 with the other end of inductance L 2, the negative pole of diode D10 connects one end of electric capacity C13, one end of resistance R16, one end of resistance R17, one end of resistance R18 are all connected with the other end of electric capacity C13 with one end of resistance R19, and the other end of resistance R16, the other end of resistance R17, the other end of resistance R18 are all connected with lamp plate 5 with the other end of resistance R19; The positive pole of diode D11 connects the output sw2 of boost chip U2, and the positive pole of this diode D11 also connects the positive pole of diode D10, and the negative pole of diode D11 is all connected with lamp plate 5 with the negative pole end of voltage-stabiliser tube DZ2; The positive terminal of voltage-stabiliser tube DZ2 is all connected with the feedback end fb2 of boost chip U2 with one end of resistance R20, and one end of this resistance R20 also connects the negative pole end of voltage-stabiliser tube DZ1, the other end of the other end contact resistance R16 of resistance R20; One end of resistance R21 is all connected with the Enable Pin en of boost chip U2 with one end of electric capacity C11, and the other end of the ground end gnd2 of boost chip U2, the other end of electric capacity C10, the other end of electric capacity C11 and electric capacity C13 is all connected with the other end of resistance R21.
Cell voltage from battery 2 is carried out boosting process by boost chip U2, uses to be applicable to lamp plate.The pin function of boost chip U2 is substantially identical with step-down chip U1, the voltage that just boost chip U2 is is 36V by the boosting of the cell voltage of 8.4V, and step-down chip be the voltage being 8.4V by the input voltage step-down of 12V to 24V is battery charging.
The work light circuit that the present embodiment provides, step-down chip U1 detects for detecting input voltage, when the switch in management of charging and discharging circuit is pressed, whole work light circuit is made to form current circuit, worked by the control end control MCU of MCU, pressurizer provides the constant voltage of 5V to power for MCU, the battery voltage detection end of MCU is for detecting the voltage status of battery, according to the different conditions of cell voltage to control LED light work, the input voltage measurement end of MCU is for detecting the presence or absence of input voltage, after switch is pressed, the input voltage measurement end of MCU can detect input voltage, now only need MCU only need detect cell voltage whether to reach capacity preset value, the current detecting end of MCU is for detecting the charging current of battery, and boost chip U2 guarantees that constant-current discharge is to lamp plate, works at constant current to make lamp plate.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection range of the utility model claim.

Claims (7)

1. a work light circuit, is characterized in that, comprises charging socket, the charging circuit be connected with charging socket, battery, management of charging and discharging circuit, discharge circuit and lamp plate with LED light; Described charging circuit, charges the battery after carrying out step-down process for the input voltage of self-charging in future socket; Described management of charging and discharging circuit, for detecting the input voltage of charging circuit and detecting the real-time cell voltage of battery, and makes LED light send corresponding light according to input voltage and real-time cell voltage; Described discharge circuit, is sent to lamp plate after the cell voltage from battery being carried out boosting process.
2. work light circuit as claimed in claim 1, it is characterized in that, described lamp plate is LED.
3. work light circuit as claimed in claim 1, it is characterized in that, described charging circuit comprises diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, inductance L 1 and step-down chip U1;
The positive pole of described diode D1 is all connected with the positive terminal of charging socket with the positive pole of diode D2, the negative pole of described diode D1, the negative pole of diode D2, one end of electric capacity C1 is all connected with the input of step-down chip U1 with one end of electric capacity C2, one end of described inductance L 1, the negative pole of diode D3 is all connected with the output of step-down chip U1 with the negative pole of diode D4, the positive pole of described diode D3 is all connected with one end of electric capacity C3 with the positive pole of diode D4, the other end of electric capacity C3, the positive pole of diode D5 is all connected with the other end of inductance L 1 with the positive pole of diode D6, one end of one end of described resistance R1, one end of resistance R2, resistance R3 is all connected with the feedback end of step-down chip U1 with one end of electric capacity C4, the other end of the positive pole of described diode D3, the positive pole of diode D4, resistance R1 and the equal ground connection of the other end of resistance R2, the other end of described electric capacity C4 is all connected with one end of battery with the other end of resistance R3, one end of the other end of described battery, one end of resistance R4, resistance R5 is all connected with the test side of step-down chip U1 with one end of resistance R6, the equal ground connection of negative pole end of described resistance R4, resistance R5, electric capacity C1 and charging socket, one end of the negative pole of described diode D2, the other end of resistance R3, resistance R5, the other end of resistance R6, the negative pole of diode D5 are all connected with management of charging and discharging circuit with the negative pole of diode D6.
4. work light circuit as claimed in claim 3, it is characterized in that, the model of described step-down chip U1 is XL4101.
5. work light circuit as claimed in claim 3, it is characterized in that, management of charging and discharging circuit comprises resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, diode D7, diode D8, diode D9, pressurizer, voltage-stabiliser tube DZ1, switch, MCU and indicator light;
The negative pole of the cathode connecting diode D2 of described diode D7, the negative pole of diode D7, one end of electric capacity C5 are all connected with the input of pressurizer with the negative pole of diode D8, one end of described electric capacity C6 connects the output of pressurizer, and equal ground connection is held on the other end of battery C5, the other end of electric capacity C6 and the ground of pressurizer, described switch is all connected with discharge circuit with the positive pole of diode D8, and described switch also connects the negative pole of diode D3, one end of described resistance R7 is all connected with the control end of MCU with one end of resistance R8, the other end ground connection of described resistance R7, and the other end of resistance R8 connects the positive pole of diode D8, one end of described resistance R9, one end of resistance R10 is all connected with the battery voltage detection end of MCU with one end of electric capacity C7, the other end of the other end contact resistance R3 of described resistance R9, one end of described resistance R11, the negative pole of diode D9 is all connected with the input voltage measurement end of MCU with one end of electric capacity C8, the other end of described resistance R11 connects the negative pole of diode D2, one end of described electric capacity C9 is all connected with the current detecting end of MCU with the other end of resistance R6, the other end of described electric capacity C7, the other end of electric capacity C8, the other end of electric capacity C9, the positive pole of diode D9, equal ground connection is held on the other end of resistance R10 and the ground of MCU, one end of described resistance R12 connects first output of MCU, and one end of resistance R13 connects second output of MCU, and the other end of described resistance R12 is all connected with indicator light with the other end of resistance R13, one end of described resistance R14 is all connected with the control end of MCU with the positive terminal of voltage-stabiliser tube DZ1, and the negative pole end of described voltage-stabiliser tube DZ1 connects discharge circuit, and the other end of described resistance R14 is all connected with the output of pressurizer with the feeder ear of MCU.
6. work light circuit as claimed in claim 5, it is characterized in that, the model of described pressurizer is LM7805.
7. work light circuit as claimed in claim 5, it is characterized in that, described discharge circuit comprises resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, diode D10, diode D11, voltage-stabiliser tube DZ2, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, inductance L 2 and boost chip U2;
One end of described resistance R15, one end of inductance L 2, one end of electric capacity C10 and the input of boost chip U2 are all connected with the positive pole of diode D8; One end of described electric capacity C11 connects the input of boost chip U2, the other end of described resistance R15 connects one end of electric capacity C12, the other end of electric capacity C12 is connected the positive pole of diode D10 with the other end of inductance L 2, the negative pole of described diode D10 connects one end of electric capacity C13, one end of described resistance R16, one end of resistance R17, one end of resistance R18 are all connected with the other end of electric capacity C13 with one end of resistance R19, and the other end of the other end of described resistance R16, the other end of resistance R17, resistance R18 is all connected with lamp plate with the other end of resistance R19; The positive pole of described diode D11 connects the output of boost chip U2, and the positive pole of this diode D11 also connects the positive pole of diode D10, and the negative pole of described diode D11 is all connected with lamp plate with the negative pole end of voltage-stabiliser tube DZ2; The positive terminal of described voltage-stabiliser tube DZ2 is all connected with the feedback end of boost chip U2 with one end of resistance R20, and one end of this resistance R20 also connects the negative pole end of voltage-stabiliser tube DZ1, the other end of the other end contact resistance R16 of described resistance R20; One end of described resistance R21 is all connected with the Enable Pin of boost chip U2 with one end of electric capacity C11, and the ground end of boost chip U2, the other end of electric capacity C10, the other end of electric capacity C11 and the other end of electric capacity C13 are all connected with the other end of resistance R21.
CN201520652869.4U 2015-08-27 2015-08-27 Work light circuit Expired - Fee Related CN204992681U (en)

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Application Number Priority Date Filing Date Title
CN201520652869.4U CN204992681U (en) 2015-08-27 2015-08-27 Work light circuit

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Application Number Priority Date Filing Date Title
CN201520652869.4U CN204992681U (en) 2015-08-27 2015-08-27 Work light circuit

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CN204992681U true CN204992681U (en) 2016-01-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112793464A (en) * 2020-12-31 2021-05-14 航天重型工程装备有限公司 Charging control device, system and method for battery box of electric vehicle and electric vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112793464A (en) * 2020-12-31 2021-05-14 航天重型工程装备有限公司 Charging control device, system and method for battery box of electric vehicle and electric vehicle

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