CN204559421U - A kind of step-down controller circuit for intelligent electric meter - Google Patents
A kind of step-down controller circuit for intelligent electric meter Download PDFInfo
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- CN204559421U CN204559421U CN201520231048.3U CN201520231048U CN204559421U CN 204559421 U CN204559421 U CN 204559421U CN 201520231048 U CN201520231048 U CN 201520231048U CN 204559421 U CN204559421 U CN 204559421U
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- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000002459 sustained effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The utility model discloses a kind of step-down controller circuit for intelligent electric meter, comprise Mos pipe, diode D2, resistance R1, ground capacity C1 and electric capacity C2.The utility model provides DC voltage by using chip UC3845 and Mos pipe and other outer member to achieve by AC power supplies, and the utility model circuit can obtain the conversion efficiency of nearly 90%, and circuit not only structure is simple, and conversion efficiency is high.
Description
Technical field
The utility model relates to a kind of intelligent electric meter, specifically a kind of step-down controller circuit for intelligent electric meter.
Background technology
The off-line device of intelligent electric meter or power monitor has the electronic component of the following non-isolation DC power supply of ask for something 10W, up to the present, there is provided unique practical approach of low-power consumption DC power supply to remain by an AC power supplies and use extremely low, a unregulated resistance/capacitance voltage divider of efficiency after rectifier, or a reverse DC/DC transducer being difficult to design.
Utility model content
The purpose of this utility model be to provide a kind of volume is little, lightweight, output voltage ripple is little and good stability for the step-down controller circuit of intelligent electric meter, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of step-down controller circuit for intelligent electric meter, comprise Mos pipe, diode D2, resistance R1, ground capacity C1 and electric capacity C2, the described ground capacity C1 other end connects ground connection diode D1 negative pole respectively, ground capacity C2, diode D2 positive pole, Mos pipe D pole and rectifier bridge Q pin 3, rectifier bridge Q pin 1 ground connection, rectifier bridge Q pin 2 and pin 4 are connected 220V alternating current two ends respectively, described diode D2 negative pole contact resistance R1, the resistance R1 other end connects ground capacity C2 respectively, ground capacity C3, resistance R14 and chip IC port 2, chip IC port one connects ground capacity C4 and resistance R2 respectively, chip IC port 3 connects electric capacity C5, electric capacity C5 other end connection transformer T1 secondary, transformer T1 secondary other end ground connection, chip IC port 4 ground connection, chip IC port 5 is the contact resistance R2 other end and ground capacity C8 respectively, chip IC port 6 is contact resistance R9 and ground capacity C7 respectively, chip IC port 7 connects electric capacity C6 respectively, resistance R3 and resistance R10, chip IC port 8 connects the electric capacity C6 other end and the resistance R3 other end respectively, the described resistance R10 other end connects earth resistance R11 and resistance R12 respectively, the described resistance R14 other end connects diode D6 negative pole, diode D6 positive pole is the contact resistance R12 other end respectively, inductance L, diode D7, electric capacity C9 and output Ui, the inductance L other end connects ground connection diode D4 negative pole respectively, ground connection diode D5 negative pole and transformer T2 secondary, one end, transformer T2 former limit ground connection, the transformer T2 former limit other end connects earth resistance R6 and diode D3 positive pole respectively, diode D3 negative pole connects earth resistance R7 respectively, earth resistance R8 and the resistance R9 other end, the described transformer T2 secondary other end is contact resistance R5 respectively, Mos pipe S pole and the former limit of transformer T1, the transformer T1 former limit other end is contact resistance R4 and the resistance R5 other end respectively, the resistance R4 other end connects Mos pipe G pole.
As the utility model further scheme: described chip IC model is UC3845.
Compared with prior art, the beneficial effects of the utility model are: the utility model provides DC voltage by using chip UC3845 and Mos pipe and other outer member to achieve by AC power supplies, the utility model circuit can obtain the conversion efficiency of nearly 90%, circuit not only structure is simple, and conversion efficiency is high.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the step-down controller circuit for intelligent electric meter.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of step-down controller circuit for intelligent electric meter, comprise Mos pipe, diode D2, resistance R1, ground capacity C1 and electric capacity C2, the ground capacity C1 other end connects ground connection diode D1 negative pole respectively, ground capacity C2, diode D2 positive pole, Mos pipe D pole and rectifier bridge Q pin 3, rectifier bridge Q pin 1 ground connection, rectifier bridge Q pin 2 and pin 4 are connected 220V alternating current two ends respectively, diode D2 negative pole contact resistance R1, the resistance R1 other end connects ground capacity C2 respectively, ground capacity C3, resistance R14 and chip IC port 2, chip IC port one connects ground capacity C4 and resistance R2 respectively, chip IC port 3 connects electric capacity C5, electric capacity C5 other end connection transformer T1 secondary, transformer T1 secondary other end ground connection, chip IC port 4 ground connection, chip IC port 5 is the contact resistance R2 other end and ground capacity C8 respectively, chip IC port 6 is contact resistance R9 and ground capacity C7 respectively, chip IC port 7 connects electric capacity C6 respectively, resistance R3 and resistance R10, chip IC port 8 connects the electric capacity C6 other end and the resistance R3 other end respectively, the resistance R10 other end connects earth resistance R11 and resistance R12 respectively, the resistance R14 other end connects diode D6 negative pole, diode D6 positive pole is the contact resistance R12 other end respectively, inductance L, diode D7, electric capacity C9 and output Ui, the inductance L other end connects ground connection diode D4 negative pole respectively, ground connection diode D5 negative pole and transformer T2 secondary, one end, transformer T2 former limit ground connection, the transformer T2 former limit other end connects earth resistance R6 and diode D3 positive pole respectively, diode D3 negative pole connects earth resistance R7 respectively, earth resistance R8 and the resistance R9 other end, the transformer T2 secondary other end is contact resistance R5 respectively, Mos pipe S pole and the former limit of transformer T1, the transformer T1 former limit other end is contact resistance R4 and the resistance R5 other end respectively, the resistance R4 other end connects Mos pipe G pole.
Chip IC model is UC3845.
Operation principle of the present utility model is: power supply through diode D2 and resistance R1 for chip IC provides voltage, chip IC port 3 exports pulse through the vibration of electric capacity C5 and transformer T1 coupling rear drive Mos pipe, when after the conducting of Mos pipe, output current is powered to the load after electric capacity C9 filtering by inductance L, when Mos pipe ends, inductance L magnetic energy changes electric energy into, its negative right side, polarity left side just, sustained diode 4 and sustained diode 5 conducting, electric current continues to power to the load by sustained diode 4 and sustained diode 5, load is made to obtain level and smooth direct current, when output voltage too low or too high time, from resistance R10, resistance R11, obtain sampling voltage in the bleeder circuit that resistance R12 forms and deliver to control Mos pipe conducting pulsewidth after chip IC and chip IC internal reference voltage compare, thus output voltage is stablized.When load current be short-circuited or more than 8A time, the voltage rise of chip IC port 3 can control pulsewidth makes Mos pipe end, to guarantee the safety of Mos pipe.
Triode D4 and triode D5 carries out clamp and absorption to peak voltage.
Can regulation output voltage U i by regulating resistance R14 resistance, diode D7 withstand voltage and electric capacity C9 capacitance, obtain any voltage value between 0 ~ 48V.
Claims (2)
1. the step-down controller circuit for intelligent electric meter, comprise Mos pipe, diode D2, resistance R1, ground capacity C1 and electric capacity C2, it is characterized in that, the described ground capacity C1 other end connects ground connection diode D1 negative pole respectively, ground capacity C2, diode D2 positive pole, Mos pipe D pole and rectifier bridge Q pin 3, rectifier bridge Q pin 1 ground connection, rectifier bridge Q pin 2 and pin 4 are connected 220V alternating current two ends respectively, described diode D2 negative pole contact resistance R1, the resistance R1 other end connects ground capacity C2 respectively, ground capacity C3, resistance R14 and chip IC port 2, chip IC port one connects ground capacity C4 and resistance R2 respectively, chip IC port 3 connects electric capacity C5, electric capacity C5 other end connection transformer T1 secondary, transformer T1 secondary other end ground connection, chip IC port 4 ground connection, chip IC port 5 is the contact resistance R2 other end and ground capacity C8 respectively, chip IC port 6 is contact resistance R9 and ground capacity C7 respectively, chip IC port 7 connects electric capacity C6 respectively, resistance R3 and resistance R10, chip IC port 8 connects the electric capacity C6 other end and the resistance R3 other end respectively, the described resistance R10 other end connects earth resistance R11 and resistance R12 respectively, the described resistance R14 other end connects diode D6 negative pole, diode D6 positive pole is the contact resistance R12 other end respectively, inductance L, diode D7, electric capacity C9 and output Ui, the inductance L other end connects ground connection diode D4 negative pole respectively, ground connection diode D5 negative pole and transformer T2 secondary, one end, transformer T2 former limit ground connection, the transformer T2 former limit other end connects earth resistance R6 and diode D3 positive pole respectively, diode D3 negative pole connects earth resistance R7 respectively, earth resistance R8 and the resistance R9 other end, the described transformer T2 secondary other end is contact resistance R5 respectively, Mos pipe S pole and the former limit of transformer T1, the transformer T1 former limit other end is contact resistance R4 and the resistance R5 other end respectively, the resistance R4 other end connects Mos pipe G pole.
2. the step-down controller circuit for intelligent electric meter according to claim 1, is characterized in that, described chip IC model is UC3845.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520231048.3U CN204559421U (en) | 2015-04-15 | 2015-04-15 | A kind of step-down controller circuit for intelligent electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520231048.3U CN204559421U (en) | 2015-04-15 | 2015-04-15 | A kind of step-down controller circuit for intelligent electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204559421U true CN204559421U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520231048.3U Expired - Fee Related CN204559421U (en) | 2015-04-15 | 2015-04-15 | A kind of step-down controller circuit for intelligent electric meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN204559421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294470A (en) * | 2017-07-07 | 2017-10-24 | 佛山领新信息科技有限公司 | A kind of motor for washer control system |
-
2015
- 2015-04-15 CN CN201520231048.3U patent/CN204559421U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294470A (en) * | 2017-07-07 | 2017-10-24 | 佛山领新信息科技有限公司 | A kind of motor for washer control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20160415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |