CN206820667U - DC-stabilized circuit - Google Patents
DC-stabilized circuit Download PDFInfo
- Publication number
- CN206820667U CN206820667U CN201720685648.6U CN201720685648U CN206820667U CN 206820667 U CN206820667 U CN 206820667U CN 201720685648 U CN201720685648 U CN 201720685648U CN 206820667 U CN206820667 U CN 206820667U
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- CN
- China
- Prior art keywords
- resistor
- electric capacity
- circuit
- resistance
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of DC-stabilized circuit, it includes transformer, bridge rectifier, filter circuit and the mu balanced circuit being sequentially connected electrically, the filter circuit is made up of the first electric capacity C1, the mu balanced circuit is made up of first resistor R1, the first triode Q1, the second diode D2, the second electric capacity C2, second resistance R2,3rd resistor R3 and swept resistance R4, power circuit provided by the utility model, can make direct current power source voltage change it is small, stably, technical indicator reach requirement.
Description
Technical field
It the utility model is related to voltage-stabilized power supply design field, and in particular to a kind of DC-stabilized circuit.
Background technology
The change of existing direct current power source voltage greatly, unstable, technical indicator do not reach requirement.
Utility model content
The utility model overcomes existing direct current power source voltage in the prior art and unstable deficiency be present, there is provided Yi Zhong electricity
Bucklingization is small, stable DC voltage-stabilized power supply circuit.
To achieve the above object, the utility model uses following technical scheme：
A kind of DC-stabilized circuit, transformer that it includes being sequentially connected electrically, bridge rectifier, filter circuit and steady
Volt circuit, the filter circuit are made up of the first electric capacity C1, and the mu balanced circuit is by first resistor R1, the first triode Q1,
Two diode D2, the second electric capacity C2, second resistance R2,3rd resistor R3 and swept resistance R4 compositions, the first triode Q1
Colelctor electrode electrically connected respectively with first resistor R1 one end and the first electric capacity C1 positive pole, the base stage of the first triode Q1
Electrically connected respectively with the first resistor R1 other end and the second diode D2 negative pole, the emitter stage point of the first triode Q1
Do not electrically connected with 3rd resistor R3 one end and the second electric capacity C2 positive pole, the other end and swept resistance of the 3rd resistor R3
R4 one end electrical connection, the other end of the swept resistance R4 electrically connect with second resistance R2 one end, the first electric capacity C1
Negative pole, the second diode D2 positive pole, the second electric capacity C2 negative pole and the second resistance R2 other end be grounded.
Compared with prior art, the beneficial effects of the utility model are：
Power circuit provided by the utility model, can make direct current power source voltage change it is small, stably, technical indicator reach will
Ask.
Brief description of the drawings
Fig. 1 is a kind of circuit theory diagrams of the DC-stabilized circuit of embodiment of the utility model.
As shown in figure 1, wherein corresponding reference is entitled：
1 transformer, Bridge 2 formula rectifier, 3 filter circuits, 4 mu balanced circuits.
Embodiment
The utility model is further elaborated below in conjunction with the accompanying drawings.
A kind of DC-stabilized circuit as shown in Figure 1, it includes transformer 1, the bridge rectifier being sequentially connected electrically
2nd, filter circuit 3 and mu balanced circuit 4, the filter circuit 3 are made up of the first electric capacity C1, and the mu balanced circuit 4 is by first resistor
R1, the first triode Q1, the second diode D2, the second electric capacity C2, second resistance R2,3rd resistor R3 and swept resistance R4 groups
Into the colelctor electrode of the first triode Q1 electrically connects with first resistor R1 one end and the first electric capacity C1 positive pole respectively, institute
The base stage for stating the first triode Q1 electrically connects with the first resistor R1 other end and the second diode D2 negative pole respectively, and described
One triode Q1 emitter stage electrically connects with 3rd resistor R3 one end and the second electric capacity C2 positive pole respectively, the 3rd resistor
The R3 other end electrically connects with swept resistance R4 one end, the other end of the swept resistance R4 and second resistance R2 one end electricity
Connection, the negative pole of the first electric capacity C1, the second diode D2 positive pole, the second electric capacity C2 negative pole and second resistance R2
The other end is grounded.
In the present embodiment, transformer 1 is step-down transformer, and it changes into power network 220V AC voltage the friendship to suit the requirements
Voltage is flowed, and is sent to bridge rectifier 2, bridge rectifier 2 utilizes unilateal conduction original paper, and sinusoidal ac is converted into pulse
Direct current, the alternating component in the output voltage of bridge rectifier 2 largely filters out, obtained smoother by filter circuit 3
DC voltage, mu balanced circuit 4 make the DC voltage stability of output, do not change with the change of ac grid voltage and load.
Essence of the present utility model is described in detail above embodiment, but can not be to of the present utility model
Protection domain is limited, it should be apparent that, under enlightenment of the present utility model, those of ordinary skill in the art can be with
Carry out many improvement and modification, it should be noted that these are improved and modification all falls in claim of the present utility model protection
Within the scope of.
Claims (1)
1. a kind of DC-stabilized circuit, it is characterised in that it includes transformer (1), the bridge rectifier being sequentially connected electrically
(2), filter circuit (3) and mu balanced circuit (4), the filter circuit (3) are made up of the first electric capacity C1, the mu balanced circuit (4)
By first resistor R1, the first triode Q1, the second diode D2, the second electric capacity C2, second resistance R2,3rd resistor R3 and slip
Resistance R4 is formed, and the colelctor electrode of the first triode Q1 is electric with first resistor R1 one end and the first electric capacity C1 positive pole respectively
Connection, the base stage of the first triode Q1 are electrically connected with the first resistor R1 other end and the second diode D2 negative pole respectively
Connect, the emitter stage of the first triode Q1 electrically connects with 3rd resistor R3 one end and the second electric capacity C2 positive pole respectively, institute
The other end for stating 3rd resistor R3 electrically connects with swept resistance R4 one end, the other end and second resistance of the swept resistance R4
R2 one end electrical connection, the negative pole of the first electric capacity C1, the second diode D2 positive pole, the second electric capacity C2 negative pole and the
The two resistance R2 other end is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720685648.6U CN206820667U (en) | 2017-06-13 | 2017-06-13 | DC-stabilized circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720685648.6U CN206820667U (en) | 2017-06-13 | 2017-06-13 | DC-stabilized circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206820667U true CN206820667U (en) | 2017-12-29 |
Family
ID=60759827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720685648.6U Expired - Fee Related CN206820667U (en) | 2017-06-13 | 2017-06-13 | DC-stabilized circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206820667U (en) |
-
2017
- 2017-06-13 CN CN201720685648.6U patent/CN206820667U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 Termination date: 20180613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |