CN104103144A - Residual current electrical fire monitor power supply circuit - Google Patents
Residual current electrical fire monitor power supply circuit Download PDFInfo
- Publication number
- CN104103144A CN104103144A CN201410301947.6A CN201410301947A CN104103144A CN 104103144 A CN104103144 A CN 104103144A CN 201410301947 A CN201410301947 A CN 201410301947A CN 104103144 A CN104103144 A CN 104103144A
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- Prior art keywords
- electrical fire
- current electrical
- fire monitor
- monitor power
- residual
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Abstract
The invention provides a residual current electrical fire monitor power supply circuit. The circuit is characterized in that a conversion power supply and a capacitor Cin access a VIN pin of a switch voltage stabilizing chip K1 and an OUT pin wiring coil L1 of K1, and then access an IN pin of a linear voltage stabilizing chip K2; resistors R17 and R18 are connected in series, and then access IN of the K2; a capacitor Cf and the R18 are connected in parallel, and then access FB of the K1; a diode D3 with a grounding positive pole is connected between the K1 and the L1; grounding capacitors C10 and C11 are connected between the IN pins of the L1 and the K2; and an OUT output line of the K2 is connected with grounding capacitors C12 and C13. The residual current electrical fire monitor power supply circuit provided by the invention has the advantages of simple circuit and reliable performance, and can effectively meet the requirements of voltage stabilizing and power supply of an electrical fire monitoring detector.
Description
Technical field
The design relates to residual-current electrical fire monitor power circuit, belongs to electric detection technique field.
Background technology
Detector for electric fire protection refers to the detector of the electrical fire such as residual current, the temperature risk parameters variation of surveying in protected circuit.Be to prevent and important technology equipment that detection of fires occurs, it is by the detection to environment temperature, electric current, in the time of breaking out of fire dangerous, and alarm cut off circuit.Wherein the DC/DC translation function of 5V realized 24V and turns by power circuit, is watch-dog important component part.
Summary of the invention
According to above-mentioned requirements, the design provides a kind of residual-current electrical fire monitor power circuit, and circuit is simple, and voltage stabilizing is reliable.
For achieving the above object, the design realizes by following technological means:
A kind of residual-current electrical fire monitor power circuit, it is characterized in that: the VIN pin of conversion electric power and capacitor C in access switching regulator IC K1, after the OUT pin wiring circle L1 of K1, access the IN pin of linear voltage stabilization chip K2, the IN of access K2 after resistance R 17, R18 series connection, the capacitor C f FB that afterwards access K1 in parallel with R18, between K1 and L1, be connected to the diode D3 of plus earth, between the IN of L1 and K2 pin, there are direct earth capacitance C10, C11, on K2OUT outlet line, have capacitor C 12, the C13 of ground connection.
Preferred:
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described switching regulator IC model is LM2596-ADJ.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described switched linear chip model is LM2940.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described diode model is IN5825.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described coil L1 capacity is 0.8 μ H.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: input K1 supply voltage is 24V, and K2 output voltage is 5V.
The invention has the beneficial effects as follows: the design's circuit is simple that dependable performance can effectively meet the voltage stabilizing power requirement of detector for electric fire protection.
Brief description of the drawings
Fig. 1 is the design's circuit diagram.
Embodiment
Below in conjunction with Figure of description, design is further described.
As shown in Figure 1, the DC/DC translation function of 5 V realized 24 V and turns by power circuit, and power circuit design adopts 2 grades of change-over circuits.Switching regulator IC advantage is high, the difficult heating of transformation efficiency, and shortcoming is that ripple is large.Linear voltage stabilization chip transformation efficiency is low, but ripple is less.The 12 V voltages that the design adopts switching regulator IC LM2596 to generate the first order connect the cascade system of linear voltage stabilization chip LM2940 again, in the minimum situation of heat radiation, obtain 5 V D.C. regulated power supplies.
A kind of residual-current electrical fire monitor power circuit, it is characterized in that: the VIN pin of conversion electric power and capacitor C in access switching regulator IC K1, after the OUT pin wiring circle L1 of K1, access the IN pin of linear voltage stabilization chip K2, the IN of access K2 after resistance R 17, R18 series connection, the capacitor C f FB that afterwards access K1 in parallel with R18, between K1 and L1, be connected to the diode D3 of plus earth, between the IN of L1 and K2 pin, there are direct earth capacitance C10, C11, on K2OUT outlet line, have capacitor C 12, the C13 of ground connection.
Preferred:
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described switching regulator IC model is LM2596-ADJ.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described switched linear chip model is LM2940.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described diode model is IN5825.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: described coil L1 capacity is 0.8 μ H.
Described a kind of residual-current electrical fire monitor power circuit, is characterized in that: input K1 supply voltage is 24V, and K2 output voltage is 5V.
More than show and described the design's ultimate principle, principal character and advantage.The technician of the industry should understand; the design is not restricted to the described embodiments; the principle that the design is just described of describing in above-described embodiment and instructions; do not departing under the prerequisite of the design's spirit and scope; the design also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.
Claims (6)
1. a residual-current electrical fire monitor power circuit, it is characterized in that: the VIN pin of conversion electric power and capacitor C in access switching regulator IC K1, after the OUT pin wiring circle L1 of K1, access the IN pin of linear voltage stabilization chip K2, the IN of access K2 after resistance R 17, R18 series connection, the capacitor C f FB that afterwards access K1 in parallel with R18, between K1 and L1, be connected to the diode D3 of plus earth, between the IN of L1 and K2 pin, there are direct earth capacitance C10, C11, on K2OUT outlet line, have capacitor C 12, the C13 of ground connection.
2. a kind of residual-current electrical fire monitor power circuit as claimed in claim 1, is characterized in that: described switching regulator IC model is LM2596-ADJ.
3. a kind of residual-current electrical fire monitor power circuit as claimed in claim 1, is characterized in that: described switched linear chip model is LM2940.
4. a kind of residual-current electrical fire monitor power circuit as claimed in claim 1, is characterized in that: described diode model is IN5825.
5. a kind of residual-current electrical fire monitor power circuit as claimed in claim 1, is characterized in that: described coil L1 capacity is 0.8 μ H.
6. a kind of residual-current electrical fire monitor power circuit as claimed in claim 1, is characterized in that: input K1 supply voltage is 24V, and K2 output voltage is 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410301947.6A CN104103144A (en) | 2014-06-30 | 2014-06-30 | Residual current electrical fire monitor power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410301947.6A CN104103144A (en) | 2014-06-30 | 2014-06-30 | Residual current electrical fire monitor power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104103144A true CN104103144A (en) | 2014-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410301947.6A Pending CN104103144A (en) | 2014-06-30 | 2014-06-30 | Residual current electrical fire monitor power supply circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN104103144A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429439A (en) * | 2018-03-30 | 2018-08-21 | 张浩然 | 7.2V DC voltages to be down to the circuit and intelligent carriage of 5V |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2438252A (en) * | 2005-10-01 | 2007-11-21 | Philip Marson | Fire alarm isolates power circuits |
| CN201142640Y (en) * | 2007-11-28 | 2008-10-29 | 常熟开关制造有限公司(原常熟开关厂） | Power supply circuit of aftercurrent type electric fire disaster monitoring detector |
| CN201266829Y (en) * | 2008-10-08 | 2009-07-01 | 巨邦电气有限公司 | Residual current type electric detector for monitoring fire |
| CN203055081U (en) * | 2012-11-14 | 2013-07-10 | 浙江金弘科技有限公司 | Residual current-type electrical fire monitoring detector |
| CN203466738U (en) * | 2013-09-04 | 2014-03-05 | 上海华宿电气股份有限公司 | Power source circuit of residual current type electrical fire disaster monitor |
| CN203909968U (en) * | 2014-06-30 | 2014-10-29 | 苏州原点工业设计有限公司 | Residual current type electrical fire monitor power circuit |
-
2014
- 2014-06-30 CN CN201410301947.6A patent/CN104103144A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2438252A (en) * | 2005-10-01 | 2007-11-21 | Philip Marson | Fire alarm isolates power circuits |
| CN201142640Y (en) * | 2007-11-28 | 2008-10-29 | 常熟开关制造有限公司(原常熟开关厂） | Power supply circuit of aftercurrent type electric fire disaster monitoring detector |
| CN201266829Y (en) * | 2008-10-08 | 2009-07-01 | 巨邦电气有限公司 | Residual current type electric detector for monitoring fire |
| CN203055081U (en) * | 2012-11-14 | 2013-07-10 | 浙江金弘科技有限公司 | Residual current-type electrical fire monitoring detector |
| CN203466738U (en) * | 2013-09-04 | 2014-03-05 | 上海华宿电气股份有限公司 | Power source circuit of residual current type electrical fire disaster monitor |
| CN203909968U (en) * | 2014-06-30 | 2014-10-29 | 苏州原点工业设计有限公司 | Residual current type electrical fire monitor power circuit |
Non-Patent Citations (1)
| Title |
|---|
| 杨洋，汤丽娟: ""基于MC9S08AW60剩余电流式电气火灾监控系统"", 《微型机与应用》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429439A (en) * | 2018-03-30 | 2018-08-21 | 张浩然 | 7.2V DC voltages to be down to the circuit and intelligent carriage of 5V |
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Application publication date: 20141015 |
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| RJ01 | Rejection of invention patent application after publication |