CN202799335U - Reverse connection protection booster trigger circuit - Google Patents
Reverse connection protection booster trigger circuit Download PDFInfo
- Publication number
- CN202799335U CN202799335U CN 201220396046 CN201220396046U CN202799335U CN 202799335 U CN202799335 U CN 202799335U CN 201220396046 CN201220396046 CN 201220396046 CN 201220396046 U CN201220396046 U CN 201220396046U CN 202799335 U CN202799335 U CN 202799335U
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- Prior art keywords
- diode
- connection protection
- trigger circuit
- reverse
- utility
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- 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 reverse connection protection booster trigger circuit comprising a divider resistor R1, an energy storage capacitor C1, a bidirectional trigger diode DB, and a diode D3. The divider resistor R1 and the energy-storage capacitor C1 are serially connected together. One end of the bidirectional trigger diode DB and one end of the diode D3 are connected between the divider resistor R1 and the energy storage capacitor C1. The utility model is characterized in that a reverse connection protection circuit is connected between an input end of the divider resistor R1 and an output end of the bidirectional trigger diode DB. The circuit provided in the utility model is provided with the reverse connection protection circuit, and even when the power supply is reversely connected, electric devices cannot be broken down by the peak voltage of the power supply, therefore the service lifetime of the electric devices can be prolonged.
Description
Technical field
The utility model relates to a kind of circuits for triggering, specifically refers to a kind of reverse connecting protection step-up trigger circuit.
Background technology
At present, fluorescent lamp and electricity-saving lamp are the electrical equipment that people often will use, because these electrical equipment are all next luminous by filament heating or filament ionized gas, therefore all need to use in use electric ballast.But the step-up trigger circuit of the employed electric ballast of people inside does not have reversal connection protection function at present; therefore when reversal connection appears in power supply; the peak value back-emf of these voltages just can damage booster circuit, and then the breakdown potential sub-ballast, damages electric equipment.
The utility model content
The purpose of this utility model is to overcome that the step-up trigger circuit does not have the defective of reversal connection protection function in the prior art, provides a kind of simple in structure, has the reverse connecting protection step-up trigger circuit of good reversal connection protection function.
The purpose of this utility model is achieved through the following technical solutions: a kind of reverse connecting protection step-up trigger circuit; main divider resistance R1 and storage capacitor C1 by mutual serial connection; and one end be connected to bidirectional trigger diode DB between divider resistance R1 and the storage capacitor C1 and diode D3 forms, and between the output of the input of divider resistance R1 and bidirectional trigger diode DB, also be connected with reverse-connection protection circuit.
Further, described reverse-connection protection circuit comprises successively fuse F, diode D1 and the relay K of serial connection, and also is parallel with diode D2 at the relay K place; Simultaneously, between fuse F and divider resistance R1, also be serially connected with the normally opened contact of relay K.
Simultaneously, the N utmost point of described diode D2 is connected between diode D2 and the relay K.
In order to realize preferably the utility model, the impedance of described diode D1 and diode D2 equates.
The utility model is compared than prior art, has the following advantages and beneficial effect:
(1) the utility model overall structure is very simple, is easy to be extended and applied.
(2) have reverse-connection protection circuit in the circuit of the present utility model, even if therefore connect inverse time at power supply, the crest voltage of power supply can not puncture electric equipment yet, thereby prolongs the useful life of electric equipment.
Description of drawings
Fig. 1 is integrated circuit structural representation of the present utility model.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, main circuit of the present utility model will form by two ones, first step-up trigger circuit, and it two is reverse-connection protection circuits.Wherein, the step-up trigger circuit includes divider resistance R1 and the storage capacitor C1 of mutual serial connection, and an end is connected to bidirectional trigger diode DB and diode D3 between divider resistance R1 and the storage capacitor C1.That is, the end of bidirectional trigger diode DB and diode D3 all is connected between divider resistance R1 and the storage capacitor C1, and its other end then forms respectively two out splice going splices.
Described reverse-connection protection circuit then is connected between the output of the input of divider resistance R1 and bidirectional trigger diode DB.As shown in the figure, this reverse-connection protection circuit comprises successively fuse F, diode D1 and the relay K of serial connection, and also is parallel with diode D2 at the relay K place.Simultaneously, between fuse F and divider resistance R1, also be serially connected with the normally opened contact of relay K.
During use, as long as circuit connects instead, then relay K just can dead electricity, thereby the normally opened contact of relay K is restored, and then deenergization, with the assurance electric elements.
In order to ensure result of use, the N utmost point of this diode D2 is connected between diode D2 and the relay K, and the impedance of described diode D1 and diode D2 equates.
As mentioned above, just can well realize the utility model.
Claims (4)
1. reverse connecting protection step-up trigger circuit; main divider resistance R1 and storage capacitor C1 by mutual serial connection; and one end be connected to bidirectional trigger diode DB between divider resistance R1 and the storage capacitor C1 and diode D3 forms, it is characterized in that: between the output of the input of divider resistance R1 and bidirectional trigger diode DB, also be connected with reverse-connection protection circuit.
2. a kind of reverse connecting protection step-up trigger circuit according to claim 1 is characterized in that: described reverse-connection protection circuit comprises successively fuse F, diode D1 and the relay K of serial connection, and also is parallel with diode D2 at the relay K place; Simultaneously, between fuse F and divider resistance R1, also be serially connected with the normally opened contact of relay K.
3. a kind of reverse connecting protection step-up trigger circuit according to claim 2, it is characterized in that: the N utmost point of described diode D2 is connected between diode D2 and the relay K.
4. a kind of reverse connecting protection step-up trigger circuit according to claim 3 is characterized in that: the impedance of described diode D1 and diode D2 equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220396046 CN202799335U (en) | 2012-08-12 | 2012-08-12 | Reverse connection protection booster trigger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220396046 CN202799335U (en) | 2012-08-12 | 2012-08-12 | Reverse connection protection booster trigger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202799335U true CN202799335U (en) | 2013-03-13 |
Family
ID=47826499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220396046 Expired - Fee Related CN202799335U (en) | 2012-08-12 | 2012-08-12 | Reverse connection protection booster trigger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202799335U (en) |
-
2012
- 2012-08-12 CN CN 201220396046 patent/CN202799335U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20130812 |