CN104731154A - Voltage stabilizing circuit - Google Patents
Voltage stabilizing circuit Download PDFInfo
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- CN104731154A CN104731154A CN201510135704.4A CN201510135704A CN104731154A CN 104731154 A CN104731154 A CN 104731154A CN 201510135704 A CN201510135704 A CN 201510135704A CN 104731154 A CN104731154 A CN 104731154A
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- voltage
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- regulating
- divider resistance
- charger
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Abstract
The invention provides a voltage stabilizing circuit which comprises an adjustable integrated voltage stabilizer U1, a reference voltage comparator U2, a diode D1, a current-limiting resistor R1, a divider resistor R2, a divider resistor R3, a filter capacitor C1, a charging capacitor C2, a polar capacitor C3 and a filter capacitor C4. The voltage stabilizing circuit is arranged in a charger, the power input end is connected with the output end of the charger or a storage battery, so that input voltage is obtained, and a work power source is provided for a monitoring circuit in the charger through the power output end. When the charger is disconnected with an external power source, the voltage stabilizing circuit can provide the work power source for the monitoring circuit in the charger, and real-time monitoring of the monitoring circuit on the storage battery is guaranteed. The voltage stabilizing circuit has the advantages of being scientific in design, simple in result, high in adaptability and stable in output voltage.
Description
Technical field
The application relates to a kind of mu balanced circuit, specifically, relate to a kind of mu balanced circuit of stable out-put supply.
Background technology
Generator set storage battery is the important component part of genset, and whether whether the normal work of this accumulator has influence on genset is normally run, and therefore battery-operated state needs real time monitoring, understands the parameter such as battery temp, output voltage in time.Current accumulator many employings multifunctional charger charges, and this kind of charger can not only complete charge in batteries, and in charger, observation circuit can carry out Real-Time Monitoring to battery-operated parameter simultaneously; But the need of work working power of this observation circuit, this working power is provided by charger external power supply mostly, if charger and power supply disconnect, then cannot provide the working power of observation circuit.
Due to the complexity of genset working environment, people wish to monitor accumulator in real time, and existing device structure cannot meet the demand of people.In order to solve above Problems existing, people are seeking a kind of desirable technical solution always.
Summary of the invention
The object of the application is for the deficiencies in the prior art, thus a kind of design science is provided, practical, production efficiency is high, production cost is low, the reliable mu balanced circuit of the quality of production.
To achieve these goals, the technical scheme that the application adopts is: a kind of mu balanced circuit, and it comprises adjustable voltage-regulating ic device U1, reference voltage comparer U2, diode D1, current-limiting resistance R1, divider resistance R2, divider resistance R3, filter capacitor C1, charging capacitor C2, polar capacitor C3 and filter capacitor C4, wherein, the anode of described diode D1 is as power input, the negative electrode of described diode D1 connects the voltage input pin of described adjustable voltage-regulating ic device U1 and one end of described filter capacitor C1 respectively, the voltage output pin of described adjustable voltage-regulating ic device U1 connects one end of described current-limiting resistance R1 respectively, one end of described divider resistance R2, the positive pole of described polar capacitor C3 and one end of described filter capacitor C4, the voltage-regulation pin of described adjustable voltage-regulating ic device U1 connects one end of described charging capacitor C2 respectively, the other end of described current-limiting resistance R1 and the negative electrode of described reference voltage comparer U2, the other end of described filter capacitor C1 connects the other end of described charging capacitor C2 respectively, the anode of described reference voltage comparer U2, one end of described divider resistance R3, the negative pole of described polar capacitor C3 and the other end of described filter capacitor C4 ground connection, the feedback end of described reference voltage comparer U2 connects the other end of described divider resistance R2 and the other end of described divider resistance R3 respectively, one end of described divider resistance R2 is as power output end.
Based on above-mentioned, described adjustable voltage-regulating ic device U1 is that LM317 adjustable three rectifies Voltagre regulator.
Based on above-mentioned, described reference voltage comparer U2 is TL431K reference voltage comparer.
The application's hinge structure has substantive distinguishing features and progress, specifically, the application is arranged in charger, by output terminal or the accumulator of power input connecting charger, obtain input voltage with this, and provide working power by power output end to charger internal observation circuit; When charger disconnecting external power supply, due to battery stores electricity energy, therefore this mu balanced circuit can obtain input voltage from accumulator, and then provides working power to the observation circuit of charger internal, ensures that observation circuit is to the Real-Time Monitoring of accumulator; It has design science, result is simple, applicability is strong and the advantage of output voltage stabilization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the application.
Embodiment
Below by embodiment, the technical scheme of the application is described in further detail.
As shown in Fig. 1, a kind of mu balanced circuit, it comprises adjustable voltage-regulating ic device U1, reference voltage comparer U2, diode D1, current-limiting resistance R1, divider resistance R2, divider resistance R3, filter capacitor C1, charging capacitor C2, polar capacitor C3 and filter capacitor C4.
The anode of described diode D1 is as power input B, the negative electrode of described diode D1 connects the voltage input pin of described adjustable voltage-regulating ic device U1 and one end of described filter capacitor C1 respectively, the voltage output pin of described adjustable voltage-regulating ic device U1 connects one end of described current-limiting resistance R1 respectively, one end of described divider resistance R2, the positive pole of described polar capacitor C3 and one end of described filter capacitor C4, the voltage-regulation pin of described adjustable voltage-regulating ic device U1 connects one end of described charging capacitor C2 respectively, the other end of described current-limiting resistance R1 and the negative electrode of described reference voltage comparer U2, the other end of described filter capacitor C1 connects the other end of described charging capacitor C2 respectively, the anode of described reference voltage comparer U2, one end of described divider resistance R3, the negative pole of described polar capacitor C3 and the other end of described filter capacitor C4 ground connection, the feedback end of described reference voltage comparer U2 connects the other end of described divider resistance R2 and the other end of described divider resistance R3 respectively, one end of described divider resistance R2 is as power output end VDD.
In the present embodiment, described adjustable voltage-regulating ic device U1 is that LM317 adjustable three rectifies Voltagre regulator.This LM317, as the variable integrated three-terminal regulator block of output voltage, is a kind of easy to use, widely used integrated voltage stabilizer.This adjustable voltage-regulating ic device U1 is when voltage 3V to 40V, and the magnitude of voltage between the voltage output pin of described adjustable voltage-regulating ic device U1 and the voltage-regulation pin of described adjustable voltage-regulating ic device U1 is fixed value 1.25V.
In the present embodiment, described reference voltage comparer U2 is TL431K reference voltage comparer.This reference voltage comparer U2 cathode voltage at 2.5V to 35V time, the feedback end voltage of described reference voltage comparer U2 is 2.5V, with voltage after divider resistance R2 and divider resistance R3, the output voltage of described power output end VDD is made to be 5V.
This mu balanced circuit is arranged in charger, by output terminal or the accumulator of power input connecting charger, obtains input voltage with this, and provides working power by power output end to charger internal observation circuit.Utilizing LM317 adjustable three to rectify Voltagre regulator makes this circuit be applicable to all kinds of accumulators that voltage is 8V-45V.
When charger disconnecting external power supply, now this mu balanced circuit connects accumulator by power input B, obtains power supply.
Specific works engineering is as follows: when the cathode voltage of accumulator is by diode D1, enter the voltage input pin of adjustable voltage-regulating ic device U1, according to the characteristic of adjustable voltage-regulating ic device U1, the magnitude of voltage between the voltage output pin of described adjustable voltage-regulating ic device U1 and the voltage-regulation pin of described adjustable voltage-regulating ic device U1 is fixed value 1.25V; Described in the moment of energising, the voltage output pin of adjustable voltage-regulating ic device U1 is maximum voltage, now reference voltage comparer U2 reaches forward voltage, the feedback end voltage of described reference voltage comparer U2 is 2.5V, then by two high precision divider resistance R2 and divider resistance R3 dividing potential drop, the output voltage making power output end VDD is 5V, meets the power requirement of observation circuit.
Now the voltage of the voltage input pin of described adjustable voltage-regulating ic device U1 is also 5.0V, so the voltage of the power adjustment pin of adjustable voltage-regulating ic device U1 is just 3.75V, this voltage can make described reference voltage comparer U2 normally work, so this mu balanced circuit enters automatic feedback shaping modes, makes the output voltage stabilization of power output end VDD at 5.0V.
This mu balanced circuit is applicable to the accumulator of 8V-45V, and when ensureing that this circuit connects accumulator positive pole tension, the power absorption of 3V-35V pressure reduction loss can be fallen by described adjustable voltage-regulating ic device U1.
Utilize this mu balanced circuit to make observation circuit in charger when charger disconnecting external power supply, working power can be obtained from accumulator, and then ensure observation circuit non-stop run, Real-Time Monitoring is carried out to accumulator.
Claims (3)
1. a mu balanced circuit, is characterized in that: it comprises adjustable voltage-regulating ic device U1, reference voltage comparer U2, diode D1, current-limiting resistance R1, divider resistance R2, divider resistance R3, filter capacitor C1, charging capacitor C2, polar capacitor C3 and filter capacitor C4, wherein, the anode of described diode D1 is as power input, the negative electrode of described diode D1 connects the voltage input pin of described adjustable voltage-regulating ic device U1 and one end of described filter capacitor C1 respectively, the voltage output pin of described adjustable voltage-regulating ic device U1 connects one end of described current-limiting resistance R1 respectively, one end of described divider resistance R2, the positive pole of described polar capacitor C3 and one end of described filter capacitor C4, the voltage-regulation pin of described adjustable voltage-regulating ic device U1 connects one end of described charging capacitor C2 respectively, the other end of described current-limiting resistance R1 and the negative electrode of described reference voltage comparer U2, the other end of described filter capacitor C1 connects the other end of described charging capacitor C2 respectively, the anode of described reference voltage comparer U2, one end of described divider resistance R3, the negative pole of described polar capacitor C3 and the other end of described filter capacitor C4 ground connection, the feedback end of described reference voltage comparer U2 connects the other end of described divider resistance R2 and the other end of described divider resistance R3 respectively, one end of described divider resistance R2 is as power output end.
2. according to the mu balanced circuit described in claim 1, it is characterized in that: described adjustable voltage-regulating ic device U1 is that LM317 adjustable three rectifies Voltagre regulator.
3. according to the mu balanced circuit described in claim 1, it is characterized in that: described reference voltage comparer U2 is TL431K reference voltage comparer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135704.4A CN104731154A (en) | 2015-03-26 | 2015-03-26 | Voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135704.4A CN104731154A (en) | 2015-03-26 | 2015-03-26 | Voltage stabilizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104731154A true CN104731154A (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510135704.4A Pending CN104731154A (en) | 2015-03-26 | 2015-03-26 | Voltage stabilizing circuit |
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| CN (1) | CN104731154A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180456A (en) * | 2017-05-05 | 2017-09-19 | 苏州爱微礼网络科技有限公司 | Work attendance management system |
| CN107292973A (en) * | 2017-05-05 | 2017-10-24 | 苏州爱微礼网络科技有限公司 | Parking management system |
-
2015
- 2015-03-26 CN CN201510135704.4A patent/CN104731154A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180456A (en) * | 2017-05-05 | 2017-09-19 | 苏州爱微礼网络科技有限公司 | Work attendance management system |
| CN107292973A (en) * | 2017-05-05 | 2017-10-24 | 苏州爱微礼网络科技有限公司 | Parking management system |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150624 |
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| WD01 | Invention patent application deemed withdrawn after publication |