CN201113377Y - Self-restoration type electronic safety wire circuit - Google Patents
Self-restoration type electronic safety wire circuit Download PDFInfo
- Publication number
- CN201113377Y CN201113377Y CNU2007200281208U CN200720028120U CN201113377Y CN 201113377 Y CN201113377 Y CN 201113377Y CN U2007200281208 U CNU2007200281208 U CN U2007200281208U CN 200720028120 U CN200720028120 U CN 200720028120U CN 201113377 Y CN201113377 Y CN 201113377Y
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- China
- Prior art keywords
- circuit
- capacitor
- diode
- power supply
- self
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- Expired - Fee Related
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Abstract
The utility model relates to a self-recovery electronic fuse circuit, belonging to the electricity utilization safety control field. The electronic fuse circuit adopts the following technical proposal: a capacitor C1, a capacitor C2, a diode D1 and a voltage stabilizing diode DW1 are formed into a power supply circuit; a current transformer L, a diode D2, a capacitor C3, a potentiometer W1, a resistor R1, a voltage stabilizing diode DW2 and a triode Q are formed into an electronic switching circuit; a time base circuit IC (NE555), a potentiometer W2, a resistor R2, a capacitor C4 and a capacitor C5 are formed into a monostable trigger circuit; a relay J which is connected in parallel with a diode D3 and a contact J-1 of the relay J are formed into a control circuit; and the contact J-1 is connected in series with a power source main circuit. The self-recovery electronic fuse circuit which has a simple structure and convenient use can be installed in front of the general power of an object residential housing or an office building; meanwhile, the electronic fuse circuit not only has the function of an ordinary fuse, but also can realize automatic reset within a certain period of time when tripping occurs due to power source overload, thereby reaching the goals of high safety, time saving and labor saving.
Description
Technical field
The utility model relates to a kind of of Electrical Safety control field can the self-recovering type electrical fuse circuit.
Background technology
Present home dwelling or office's building are all installed the electricity consumption safeties, but all there is a shortcoming in existing electric safeties: be exactly after each power supply overload trip or fuse are burnt, must there be the people could continue power supply, time-consuming, very inconvenience of effort from new combined floodgate or replacing fuse.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of self-recovering type electrical fuse circuit that can automatically reply power supply is provided.
Its technical scheme is: form power supply circuits by capacitor C 1, C2, diode D1, voltage stabilizing didoe DW1; Form electronic switching circuit by current transformer L, diode D2, capacitor C 3, potentiometer W1, resistance R 1, voltage stabilizing didoe DW2 and triode Q; Form single-shot trigger trigger by time-base circuit IC (NE555), potentiometer W2, resistance R 2, capacitor C 4, C5; Relay J parallel diode D3 and its contact J-1 form control circuit; The contact J-1 of relay J is connected in the power supply major loop.
The utlity model has simple in structure, easy to use, before being installed in the home dwelling or office's building general supply that needs, except that can playing the effect of general insurance silk, in case can automatically reset within a certain period of time during tripping operation as power supply overload play safely, save time, the labour-saving target.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.IN is a power supply major loop input among the figure; OUT is the electricity consumption output.
Embodiment
Constitute with regard to its circuit below in conjunction with accompanying drawing and to be further described with operation principle: by capacitor C 1 be connected diode D1, voltage stabilizing didoe DW1, capacitor C 2 is formed power supply circuits; Connect diode D2, capacitor C 3, potentiometer W1, resistance R 1, voltage stabilizing didoe DW2 and triode Q by current transformer L and form electronic switching circuit; Form single-shot trigger trigger by time-base circuit IC (NE555) connection potentiometer W2, resistance R 2, capacitor C 4, C5; Relay J parallel diode D3 and its contact J-1 form control circuit; The contact J-1 of relay J is connected in the power supply major loop.
The power supply circuits that capacitor C 1 connects diode D1, voltage stabilizing didoe DW1, capacitor C 2 compositions provide power supply to electronic switching circuit, single-shot trigger trigger and control circuit.
The single-shot trigger trigger of being made up of time-base circuit IC (NE555) connection potentiometer W2, resistance R 2, capacitor C 4, C5 under the normal condition is in reset mode, the 3 pin output low levels of time-base circuit IC, not adhesive of relay J, its contact J-1 is kept closed, the circuit normal power supply.
If during current overload, electric current among the current transformer L increases, it induces voltage signal, by diode D2 rectifier and trigger triode Q conducting, and then makes 2 pin current potentials of basic IC circuit be lower than 1/3 supply power voltage, the single-shot trigger trigger upset enters temporarily steady state, the 3 pin output high level of time-base circuit IC, LED is lighted, the relay J adhesive, its contact J-1 disconnects, and circuit is stopped power supply;
Before fault was not got rid of, because the triggering signal of 2 pin of basic IC circuit still exists, relay J is adhesive all the time, kept power supply to be in dissengaged positions; After the triggering signal of 2 pin of basic IC circuit disappears, capacitor C 4 is recharged by resistance R 2, potentiometer W2, make 6 pin current potentials of basic IC circuit rise to 2/3 supply power voltage gradually, single-shot trigger trigger resets immediately, 3 pin output low levels of base IC circuit, relay J discharges, its contact J-1 closure, and circuit restores electricity.
Claims (1)
1, a kind of self-recovering type electrical fuse circuit is characterized in that: the power supply circuits that connected to form by electric capacity (C1, C2), diode (D1), voltage stabilizing didoe (DW1) are connected on the power supply major loop, and are connected with subsequent conditioning circuit; Connect to form electronic switching circuit by the current transformer (L), diode (D2), electric capacity (C3), potentiometer (W1), resistance (R1), voltage stabilizing didoe (DW2) and the triode (Q) that are attempted by on the power supply major loop; Connect to form single-shot trigger trigger by time-base circuit (IC), potentiometer (W2), resistance (R2), electric capacity (C4, C5); Relay (J) parallel diode (D3) and its contact (J-1) form control circuit; The contact (J-1) of relay (J) is connected in the power supply major loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200281208U CN201113377Y (en) | 2007-09-19 | 2007-09-19 | Self-restoration type electronic safety wire circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200281208U CN201113377Y (en) | 2007-09-19 | 2007-09-19 | Self-restoration type electronic safety wire circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113377Y true CN201113377Y (en) | 2008-09-10 |
Family
ID=39965120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200281208U Expired - Fee Related CN201113377Y (en) | 2007-09-19 | 2007-09-19 | Self-restoration type electronic safety wire circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113377Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950044A (en) * | 2014-05-19 | 2014-07-30 | 国家电网公司 | Delayed feedback circuit for bionic robot |
| CN105048405A (en) * | 2015-07-21 | 2015-11-11 | 国家电网公司 | Overvoltage and overload automatic power off control device of self-recovery power supply line |
-
2007
- 2007-09-19 CN CNU2007200281208U patent/CN201113377Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950044A (en) * | 2014-05-19 | 2014-07-30 | 国家电网公司 | Delayed feedback circuit for bionic robot |
| CN105048405A (en) * | 2015-07-21 | 2015-11-11 | 国家电网公司 | Overvoltage and overload automatic power off control device of self-recovery power supply line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |