CN209267224U - Capacitor charging/discharging circuit and electromagnet tongue control structure - Google Patents
Capacitor charging/discharging circuit and electromagnet tongue control structure Download PDFInfo
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- CN209267224U CN209267224U CN201822269690.7U CN201822269690U CN209267224U CN 209267224 U CN209267224 U CN 209267224U CN 201822269690 U CN201822269690 U CN 201822269690U CN 209267224 U CN209267224 U CN 209267224U
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- capacitor
- triode
- discharging circuit
- electrically connected
- power supply
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Abstract
The utility model provides a kind of capacitor charging/discharging circuit, including providing the control chip of adjustable pwm signal, further include power supply, capacitor, for filter and the capacitance group of dilatation and rise on-off action triode, the emitter of the triode is grounded, the control chip is electrically connected the base stage of the triode, the anode of the power supply and capacitor is electrically connected the collector of the triode, and the capacitance group is in parallel with the capacitor, the cathode ground connection of the capacitor.The utility model also provides a kind of electromagnet tongue control structure, including electromagnet tongue, further includes above-mentioned capacitor charging/discharging circuit, the anode electrical connection electromagnet tongue of the power supply and capacitor.The utility model is capacitor charging using CR2032 button cell, then by capacitor and CR2032 button cell together as the power supply of electromagnet apparatus, it solves the powerup issue of electromagnet tongue, realizes the purpose of electronic cipher cabinet lock Miniaturization Design.
Description
Technical field
The utility model relates to electronic locks for electrical domain more particularly to a kind of capacitor charging/discharging circuit and electromagnet tongue
Control structure.
Background technique
Office cabinet lock is locked using traditional mechanical key now, needs carrying keys at any time, and multiple cabinets
Different keys are respectively necessary for, causes user inconvenient to carry and key is easily lost.
In order to solve the demand that user is easy to use cabinet lock, invention is conveniently replaceable the miniature electric password bin of installation
Lock.Use electromagnet apparatus (i.e. common electromagnet tongue) as electric actuator, use CR2032 button cell as
Power supply power supply achievees the purpose that Miniaturization Design in the case where meeting normal function.
It is specified due to the power supply rated current 3mA of CR2032 button cell when power supply is CR2032 button cell
Voltage 3v, the equipment that electricity shortage is greater than 0.01W to directly drive, that is, be not enough to drive above-mentioned electromagnet apparatus.This reality
It the use of CR2032 button cell is capacitor charging, then by capacitor with one capacitor charging/discharging circuit of new design
With CR2032 button cell together as the power supply of electromagnet apparatus.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of capacitor charging/discharging circuit, with
Accessory power supply as CR2032 button cell.
The utility model is realized in this way:
The utility model provides a kind of capacitor charging/discharging circuit, including providing the control chip of adjustable pwm signal, also wraps
Include power supply, capacitor, for filtering and the capacitance group of dilatation and the triode for playing on-off action, the emitter of the triode connects
Ground, the control chip are electrically connected the base stage of the triode, and the power supply and the positive of capacitor are electrically connected three pole
The collector of pipe, the capacitance group is in parallel with the capacitor, the cathode ground connection of the capacitor.
Preferably, the power supply is button cell.
Preferably, the control chip is singlechip chip.
Preferably, the capacitor charging/discharging circuit further includes inductance and Schottky diode, the power supply passes through electricity
Electrification connects the collector of the triode, the anode of the collector electrical connection Schottky diode of the triode, Xiao
The cathode of special based diode is electrically connected the anode of the capacitor.
Preferably, the capacitor charging/discharging circuit further includes first resistor, the control chip passes through described first
Resistance is electrically connected the base stage of the triode.
Preferably, the capacitor charging/discharging circuit further includes second resistance, the collector of the triode passes through institute
State the emitter that second resistance is electrically connected the triode.
Preferably, the capacitance group includes first capacitor and the second capacitor, the first capacitor and the second capacitor are in parallel.
Preferably, the capacitor charging/discharging circuit further includes voltage-dividing detection circuit, the voltage-dividing detection circuit includes
3rd resistor, the 4th resistance and third capacitor, described 3rd resistor one end are electrically connected with the anode of the capacitor, the control
One end of chip and the 4th resistance is electrically connected the other end of the 3rd resistor, the other end ground connection of the 4th resistance, institute
State third capacitor and the 4th resistor coupled in parallel.
The utility model also provides a kind of electromagnet tongue control structure, including electromagnet tongue, further includes above-mentioned electricity
The anode of container charge-discharge circuit, the power supply and capacitor is electrically connected electromagnet tongue.
The utility model has the following beneficial effects:
1, capacitor charging/discharging circuit provided by the utility model is capacitor charging using CR2032 button cell, so
Capacitor and CR2032 button cell solved into the power supply of electromagnet tongue together as the power supply of electromagnet apparatus afterwards
Problem realizes the purpose of electronic cipher cabinet lock Miniaturization Design.
2, capacitor charging/discharging circuit provided by the utility model, has also been devised voltage-dividing detection circuit, can prevent capacitor
It overcharges, effective protection capacitor.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is capacitor charging/discharging circuit diagram provided by the embodiment of the utility model；
Fig. 2 is electronic cipher cabinet lock operational flowchart provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Such as Fig. 1-Fig. 2, the utility model embodiment one provides a kind of capacitor charging/discharging circuit, including provides adjustable PWM
The control chip (not shown) of signal, further include power supply, capacitor C1, voltage-dividing detection circuit, for filtering and the capacitor of dilatation
The emitter ground connection of the triode Q1, the triode Q1 of group and on-off action, the control chip are electrically connected three pole
The anode of the base stage of pipe Q1, the power supply and capacitor C1 are electrically connected the collector of the triode Q1, the capacitance group with
The capacitor C1 is in parallel, and the cathode ground connection of the capacitor C1, the input terminal of the voltage-dividing detection circuit is electrically connected the electricity
The anode of container C1, the control chip are electrically connected with the voltage-dividing detection circuit.In the present embodiment, triode Q1 is used
MMBT3904LT1G model, the triode Q1 not only play switch but also play certain amplification, and the control chip passes through
The pwm signal of output different duty can control the opening and closing of the triode Q1, the triode Q1 collector and the power supply
It powers together for capacitor C1, the electric current of the triode Q1 collector changes with pwm signal, to realize the capacitor
The charging current of C1 is adjustable.After the control chip detects that the capacitor C1 is full of, stop to the triode Q1's
Base stage inputs pwm signal, while the power supply also stops powering.
Preferably, the control chip is singlechip chip.
Preferably, the power supply is CR2032 button cell.
Preferably, the capacitor charging/discharging circuit further includes inductance L1 and Schottky diode D2, the power supply is logical
The collector that inductance L1 is electrically connected the triode Q1 is crossed, the collector electrical connection Schottky diode D2's of the triode Q1
Anode, the cathode of the Schottky diode D2 are electrically connected the anode of the capacitor C1.Two pole the inductance L1 and Schottky
Pipe D2 plays pressure stabilizing rectified action, and the Schottky diode D2 uses 1N5818W model.
Preferably, the capacitor charging/discharging circuit further includes first resistor R3, the control chip passes through described the
One resistance R3 is electrically connected the base stage of the triode Q1, and the first resistor R3 plays metering function.
Preferably, the capacitor charging/discharging circuit further includes second resistance R4, the collector of the triode passes through
The second resistance R4 is electrically connected the emitter of the triode, and the second resistance R4 plays metering function.
Preferably, the capacitance group includes first capacitor C9 and the second capacitor C8, the first capacitor C9 and the second electricity
Appearance C8 is in parallel, and the capacitance of the first capacitor C9 and the second capacitor C8 are equal, and the first capacitor C9 and the second capacitor C8 rise
To dilatation and filter action.
Preferably, the voltage-dividing detection circuit includes 3rd resistor R2, the 4th resistance R5 and third capacitor C2, described
The anode of three one end resistance R2 (Voltage_C1) and the capacitor C1 be electrically connecteds, chip and the 4th resistance R5 of controlling
One end is electrically connected the other end (Voltage_Test) of the 3rd resistor R2, and the other end of the 4th resistance R5 is grounded,
The third capacitor C2 is in parallel with the 4th resistance R5.
The utility model embodiment two provides a kind of electromagnet tongue control structure, including electromagnet tongue, further includes height
The anode of low level stand and above-mentioned capacitor charging/discharging circuit, the power supply and capacitor passes through the low and high level seat
Son electrical connection electromagnet tongue.
If Fig. 1 is capacitor charging/discharging circuit, VDD_3V3 is the output voltage of CR2032 button cell, the control core
The pwm signal for the particular duty cycle that piece is provided by PWM_IO mouthfuls to the base stage of the triode controls CR2032 button cell
It is slowly charged to capacitor C1.It can be adjusted with this to capacitor by the duty ratio that the control chip adjusts pwm signal
The charging current of C1, thus meet purpose of the button cell of small-power output as power supply, related control chip adjustment
The interlock circuit of pwm signal duty ratio is very common, is not the inventive point of the utility model, does not repeat herein.
Charge protection design is divided by voltage Voltage_C1 of the control chip to capacitor C1 during the charging process
Point Voltage_Test is measured in real time, and when Voltage_C1 charging reaches the voltage of requirement, is then stopped charging operations, is kept away
Exempt from the damage that overcharge causes circuit.
Electromagnet tongue control structure provided by the utility model is used for small-sized electronic cipher cabinet lock, electromagnet tongue
When being not powered on, electromagnet tongue can block the knob disk in electronic cipher cabinet lock, can not unlock, and electromagnet tongue is powered
Afterwards, electromagnet tongue can be shunk, and the knob disk is not blocked by the electromagnet tongue, it can be achieved that unlocking.
If Fig. 2 is electronic cipher cabinet lock operational flowchart provided by the embodiment of the utility model, the electronic cipher case
Cabinet latching surface is equipped with password key plate, and pressing on the password key plate is keyed the control chip, and the control chip is real
When monitored whether by key pressing, when Password Input is correct, it is described control chip be emitted to electromagnet tongue power supply signal,
Electromagnet tongue is operated to unlock.When Password Input is incorrect, the control chip sensing capacitor whether charging complete, do not have
Charging operations are then continued to execute, charging complete then continues to have monitored whether by key pressing.
In order to reach low power dissipation design, such electronic password lock is not when using, and in a dormant state, saves function
Consumption.When needing to unlock, system can be waken up by password, while charging to the capacitor of driving motor, when Password Input is completed
When, guarantee that capacitor charging is completed, executing unlocking operation at this time can make an immediate response.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (9)
1. a kind of capacitor charging/discharging circuit, including providing the control chip of adjustable pwm signal, it is characterised in that: further include electricity
Source, capacitor, for filter and the capacitance group of dilatation and rise on-off action triode, the triode emitter ground connection,
The control chip is electrically connected the base stage of the triode, and the power supply and the positive of capacitor are electrically connected the triode
Collector, the capacitance group is in parallel with the capacitor, the cathode ground connection of the capacitor.
2. capacitor charging/discharging circuit as described in claim 1, it is characterised in that: the power supply is button cell.
3. capacitor charging/discharging circuit as described in claim 1, it is characterised in that: the control chip is singlechip chip.
4. capacitor charging/discharging circuit as described in claim 1, it is characterised in that: it further include inductance and Schottky diode,
The power supply is electrically connected the collector of the triode by inductance, and the collector of the triode is electrically connected Schottky diode
Anode, the cathode of the Schottky diode is electrically connected the anode of the capacitor.
5. capacitor charging/discharging circuit as described in claim 1, it is characterised in that: it further include first resistor, the control core
Piece is electrically connected the base stage of the triode by the first resistor.
6. capacitor charging/discharging circuit as described in claim 1, it is characterised in that: it further include second resistance, the triode
Collector the emitter of the triode is electrically connected by the second resistance.
7. capacitor charging/discharging circuit as described in claim 1, it is characterised in that: the capacitance group includes first capacitor and
Two capacitors, the first capacitor and the second capacitor are in parallel.
8. capacitor charging/discharging circuit as described in claim 1, it is characterised in that: it further include voltage-dividing detection circuit, described point
Pressing detection circuit includes 3rd resistor, the 4th resistance and third capacitor, the anode of described 3rd resistor one end and the capacitor
One end of electrical connection, the control chip and the 4th resistance is electrically connected the other end of the 3rd resistor, the 4th resistance
Other end ground connection, the third capacitor and the 4th resistor coupled in parallel.
9. a kind of electromagnet tongue control structure, including electromagnet tongue, it is characterised in that: further include that claim 1-8 such as appoints
The anode of capacitor charging/discharging circuit described in one, the power supply and capacitor is electrically connected electromagnet tongue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822269690.7U CN209267224U (en) | 2018-12-29 | 2018-12-29 | Capacitor charging/discharging circuit and electromagnet tongue control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822269690.7U CN209267224U (en) | 2018-12-29 | 2018-12-29 | Capacitor charging/discharging circuit and electromagnet tongue control structure |
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| Publication Number | Publication Date |
|---|---|
| CN209267224U true CN209267224U (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822269690.7U Active CN209267224U (en) | 2018-12-29 | 2018-12-29 | Capacitor charging/discharging circuit and electromagnet tongue control structure |
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| CN (1) | CN209267224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123800A (en) * | 2019-12-31 | 2020-05-08 | 武汉卓目科技有限公司 | Serial multi-channel power distribution switch control circuit |
-
2018
- 2018-12-29 CN CN201822269690.7U patent/CN209267224U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123800A (en) * | 2019-12-31 | 2020-05-08 | 武汉卓目科技有限公司 | Serial multi-channel power distribution switch control circuit |
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