CN206892707U - A kind of linear DC constant-current source - Google Patents
A kind of linear DC constant-current source Download PDFInfo
- Publication number
- CN206892707U CN206892707U CN201720813417.9U CN201720813417U CN206892707U CN 206892707 U CN206892707 U CN 206892707U CN 201720813417 U CN201720813417 U CN 201720813417U CN 206892707 U CN206892707 U CN 206892707U
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- module
- circuit module
- constant
- current source
- linear
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Abstract
The utility model provides a kind of linear DC constant-current source,Including the input AC signaling modules being sequentially connected,Filter rectification module,On-off circuit module,Transformation isolation circuit module and output loading,The output end of the filter rectification module is also associated with detecting circuit module,The output end of the output loading is also parallel with voltage feedback module and current feedback module,Leakage protection module is provided between the transformation isolation circuit module and output loading,The on-off circuit module,Detect circuit module,Voltage feedback module and current feedback module and leakage protection module are both connected to control circuit module,The utility model is simple in construction,Small volume,Run by the circuit of voltage feedback module and current feedback module real-time inspection and control constant-current source,And avoid leaking electricity by the monitoring of leakage protection module,Further constant-current source is protected.
Description
Technical field
It the utility model is related to field of switch power, and in particular to a kind of linear DC constant-current source.
Background technology
At present, known Linear CCS is the one kind in constant output current source, has fast response time, constant current accuracy
Height, energy long-term stable operation, does not produce High-frequency Interference, is adapted to various properties loads, therefore its cost is high, in order to extend it
Service life, ensures its output prograin, and the utility model is monitored in real time on Linear CCS by voltage and current feedback
The circuit operation of constant-current source is controlled, and has introduced earth leakage protective device and has further protected.
Utility model content
The purpose of this utility model is to provide a kind of linear DC constant-current source, extends its service life, ensures its output essence
Exactness.
The technical solution of the utility model there is provided a kind of linear DC constant-current source, including the input AC letters being sequentially connected
Number module, filter rectification module, on-off circuit module, transformation isolation circuit module and output loading, the filter rectification module
Output end be also associated with detect circuit module, the output end of the output loading is also parallel with voltage feedback module and electric current is anti-
Module is presented, leakage protection module, the on-off circuit module, inspection are provided between the transformation isolation circuit module and output loading
Slowdown monitoring circuit module, voltage feedback module and current feedback module and leakage protection module are both connected to control circuit module.
The input AC signaling modules are used for input AC electricity AC signals.
The filter rectification module is used to be filtered the alternating current AC signals of input and rectification is DC signal.
The on-off circuit module is used to DC signal being converted into switching signal.
The transformation isolation circuit module is used for high-frequency switching signal isolated variable.
The beneficial effects of the utility model：
This linear DC constant-current source of the present utility model is simple in construction, small volume, passes through voltage feedback module and electric current
The circuit operation of feedback module real-time inspection and control constant-current source, and avoid leaking electricity by the monitoring of leakage protection module, enter one
Step is protected to constant-current source.
The utility model is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the principle schematic of the utility model linear DC constant-current source.
Description of reference numerals：1st, AC signaling modules are inputted；2nd, filter rectification module；3rd, filter rectification module；4th, transformation every
From circuit module；5th, output loading；6th, circuit module is detected；7th, voltage feedback module；8th, current feedback module；9th, earth leakage protective
Module；10th, control circuit module.
Embodiment
A kind of linear DC constant-current source as shown in Figure 1 is present embodiments provided, including the input AC signals being sequentially connected
Module 1, filter rectification module 2, filter rectification module 3, transformation isolation circuit module 4 and output loading 5, the filter rectification mould
The output end of block 2 is also associated with detecting circuit module 6, and the output end of the output loading 5 is also parallel with the He of voltage feedback module 7
Current feedback module 8, leakage protection module 9, the switch are provided between the transformation isolation circuit module 4 and output loading 5
Circuit module 3, detection circuit module 6, voltage feedback module 7 and current feedback module 8 and leakage protection module 9 are both connected to control
Circuit module 10 processed.Above-mentioned all modules are known conventional modules in the industry, are not illustrated one by one here.
Input AC signaling modules 1 are used for input AC electricity AC signals, the alternating current AC by filter rectification module 2 to input
Signal is filtered and rectification is DC signal, and DC signal is being inputted into transformation isolation electricity by on-off circuit module 3
Road module 4, for transformation isolation circuit module 4 to high-frequency switching signal isolated variable, the electric signal needed passes through output loading 5
Export, voltage and electric current in 8 real-time observation circuit of voltage feedback module 7 and current feedback module, the detection circuit module 6
For being detected to DC signal, the reference signal that control circuit module 10 is used for receiving test circuit module 6 carries out school
Whether positive control, the output end that the leakage protection module 9 is used to detect output loading 5 are leaked electricity, and circuit is entered in electric leakage
Row protection.
This linear DC constant-current source of the present utility model is simple in construction, small volume, passes through voltage feedback module and electric current
The circuit operation of feedback module real-time inspection and control constant-current source, and avoid leaking electricity by the monitoring of leakage protection module, enter one
Step is protected to constant-current source.
Exemplified as above is only for example, not forming to the scope of protection of the utility model to of the present utility model
Limitation, it is every to be belonged to the same or analogous design of the utility model within the scope of protection of the utility model.
Claims (5)
- A kind of 1. linear DC constant-current source, it is characterised in that：Including the input AC signaling modules being sequentially connected（1）, filter rectification Module（2）, on-off circuit module（3）, transformation isolation circuit module（4）And output loading（5）, the filter rectification module（2） Output end be also associated with detect circuit module（6）, the output loading（5）Output end be also parallel with voltage feedback module （7）And current feedback module（8）, the transformation isolation circuit module（4）And output loading（5）Between be provided with leakage protection module （9）, the on-off circuit module（3）, detection circuit module（6）, voltage feedback module（7）And current feedback module（8）And leakage Electric protection module（9）It is both connected to control circuit module（10）.
- 2. linear DC constant-current source as claimed in claim 1, it is characterised in that：The input AC signaling modules（1）For defeated Enter alternating current AC signals.
- 3. linear DC constant-current source as claimed in claim 1, it is characterised in that：The filter rectification module（2）For to defeated The alternating current AC signals entered are filtered and rectification is DC signal.
- 4. linear DC constant-current source as claimed in claim 1, it is characterised in that：The on-off circuit module（3）For by directly Stream electric signal is converted into switching signal.
- 5. linear DC constant-current source as claimed in claim 1, it is characterised in that：The transformation isolation circuit module（4）For To high-frequency switching signal isolated variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813417.9U CN206892707U (en) | 2017-07-06 | 2017-07-06 | A kind of linear DC constant-current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813417.9U CN206892707U (en) | 2017-07-06 | 2017-07-06 | A kind of linear DC constant-current source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206892707U true CN206892707U (en) | 2018-01-16 |
Family
ID=61297628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720813417.9U Expired - Fee Related CN206892707U (en) | 2017-07-06 | 2017-07-06 | A kind of linear DC constant-current source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206892707U (en) |
-
2017
- 2017-07-06 CN CN201720813417.9U patent/CN206892707U/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: 20180116 Termination date: 20210706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |