CN206743103U - A kind of dc-input power is anti-reverse with antisurge typical circuit - Google Patents
A kind of dc-input power is anti-reverse with antisurge typical circuit Download PDFInfo
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- CN206743103U CN206743103U CN201720374748.7U CN201720374748U CN206743103U CN 206743103 U CN206743103 U CN 206743103U CN 201720374748 U CN201720374748 U CN 201720374748U CN 206743103 U CN206743103 U CN 206743103U
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Abstract
A kind of dc-input power is anti-reverse with antisurge typical circuit; including resistance R7, resistance R8, resistance R11, resistance R12, resistance R13, voltage-regulator diode ZD3, voltage-regulator diode ZD7, electric capacity C17, electric capacity C21, electric capacity C36, triode Q3, metal-oxide-semiconductor Q8 and metal-oxide-semiconductor Q12; during input reverse-connection; loop can not be formed by metal-oxide-semiconductor Q12 when DC ends are positive voltage and flow back to DC+ ends; metal-oxide-semiconductor Q12 is not turned on without driving voltage; backward voltage is all added in metal-oxide-semiconductor Q12 DS both ends; no-voltage on late-class circuit, so as to protect late-class circuit.
Description
Technical field
It is anti-reverse with antisurge typical circuit to the utility model is related to a kind of dc-input power.
Background technology
Battery power supply system be aim at solve each portable charging Projecting Lamp power supply problem and research and develop efficient, safety, without connecing
Enter the novel product of interference.It fundamentally solve city be electrically accessed be easily introduced thunder and lightning interference etc. to caused by portable Projecting Lamp shadow
Ring, be preferably minimized the maintenance workload using more reliable, portable Projecting Lamp of portable Projecting Lamp.
At present industry most commonly by AC power supply turns 24V or 12V DC, charge the battery, then by battery change to
Projecting Lamp is powered, it is contemplated that Projecting Lamp fittings equipment power input has the big electrochemical capacitor of a capacity, the meeting in hot plug
There is very big dash current, cause cell voltage instantaneously to decline too low, cause other equipment that are battery powered because of under-voltage reset
Situations such as, to solve this problem, it is desirable to which Projecting Lamp device power supply (DPS) needs plus anti-surge circuit, limits maximum input impact electricity
Stream.
In addition, engineers and technicians are safeguarding, debugging, during test, may maloperation, will input reversed, Projecting Lamp drives
For dynamic power supply because being direct current input, input is reversed to cause power supply permanent damage, and to prevent such case, it is stable to improve product
Property, it is desirable to consider this point during Power Management Design, increase reverse-connection preventing circuit, power supply does not damage during input reverse-connection, connect it is correct after, electricity
Source normal work.
The content of the invention
The technical problems to be solved in the utility model is to provide the DC inputs of a kind of simple in construction, small power consumption, stable performance
Power supply reverse connection protection and antisurge typical circuit.
In order to solve the above-mentioned technical problem, the utility model includes resistance R7, resistance R8, resistance R11, resistance R12, resistance
R13, voltage-regulator diode ZD3, voltage-regulator diode ZD7, electric capacity C17, electric capacity C21, electric capacity C36, triode Q3, metal-oxide-semiconductor Q8 and MOS
Pipe Q12, resistance R8 one end negative pole with voltage-regulator diode ZD3, resistance R7 one end, electric capacity C17 one end, metal-oxide-semiconductor respectively
Q12 G poles, triode Q3 colelctor electrode connect with metal-oxide-semiconductor Q8 G poles, and the resistance R8 other end connects with electric capacity C36 positive pole
Connect, electric capacity C36 negative pole one end with electric capacity C21, resistance R13 one end, metal-oxide-semiconductor Q8 D poles and resistance R11 respectively one end
Connection, the resistance R11 other end is connected with voltage-regulator diode ZD7 negative pole, triode Q3 base stage respectively with resistance R12 one
End connects with voltage-regulator diode ZD7 positive pole, metal-oxide-semiconductor Q8 S the poles emitter stage with triode Q3, metal-oxide-semiconductor Q12 respectively D poles
Connection, the other end with resistance R13, the electric capacity C21 other end, voltage-regulator diode ZD3 be just respectively for the resistance R12 other end
Pole, the resistance R7 other end connect with the electric capacity C17 other end.
In the moment for the machine of rising, because electric capacity C17 presence has individual delay, metal-oxide-semiconductor Q8 is not turned on, electric current through resistance R13,
Diode forms loop in metal-oxide-semiconductor Q12 bodies, is charged to electric capacity C36, can be in resistance now because having electric current to flow through on resistance R13
R13 both ends produce voltage, and this voltage turns on triode Q3 base stages, electric capacity C17 both end voltages dragged down, metal-oxide-semiconductor Q8, MOS
Pipe Q12 without driving voltage because being not switched on.When the voltage on electric capacity C36 be charged to it is relatively low close to input voltage, resistance R13 both end voltages
When, triode Q3 base stages are without driving current, and triode Q3 CE pin both ends are in high resistant, and electric current is filled by resistance R8 to electric capacity C17
Electricity, after electric capacity C17 both end voltages fill up, metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q12 have the conducting of driving voltage DS ends, now because electric capacity C36
On voltage be more or less the same with input voltage, metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q12 open after dash current it is just very small.
Reverse connecting protection is analyzed：Loop can not be formed by metal-oxide-semiconductor Q12 during input reverse-connection, when DC- ends are positive voltage and flow back to DC
+ end, metal-oxide-semiconductor Q12 is not turned on without driving voltage, and backward voltage is all added in metal-oxide-semiconductor Q12 DS both ends, without electricity on late-class circuit
Pressure, so as to protect late-class circuit.
As further improvement of the utility model, the model BZX84C13VLT1 of the voltage-regulator diode ZD3 is described
Voltage-regulator diode ZD7 model BZX84C3V3LT1.
As further improvement of the utility model, the model MMBT4401LT1 of the triode Q3, the metal-oxide-semiconductor
Q8 model IRF540N, the model IRF540N of the metal-oxide-semiconductor Q12.
In summary, the utility model has the advantages that simple in construction, small power consumption, stable performance.
Brief description of the drawings
It is next with reference to the accompanying drawings and detailed description that the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
Have shown in Fig. 1, the utility model includes resistance R7, resistance R8, resistance R11, resistance R12, resistance R13, voltage stabilizing two
Pole pipe ZD3, voltage-regulator diode ZD7, electric capacity C17, electric capacity C21, electric capacity C36, triode Q3, metal-oxide-semiconductor Q8 and metal-oxide-semiconductor Q12, resistance
R8 one end negative pole with voltage-regulator diode ZD3, resistance R7 one end, electric capacity C17 one end, metal-oxide-semiconductor Q12 G poles, three respectively
Pole pipe Q3 colelctor electrode is connected with metal-oxide-semiconductor Q8 G poles, and the resistance R8 other end is connected with electric capacity C36 positive pole, electric capacity C36's
Negative pole one end with electric capacity C21, resistance R13 one end, metal-oxide-semiconductor Q8 D poles and resistance R11 respectively one end are connected, resistance R11
The other end be connected with voltage-regulator diode ZD7 negative pole, triode Q3 base stage one end and the pole of voltage stabilizing two with resistance R12 respectively
Pipe ZD7 positive pole connection, the emitter stage with triode Q3, metal-oxide-semiconductor Q12 D poles are connected respectively for metal-oxide-semiconductor Q8 S poles, resistance R12
The other end respectively the other end with resistance R13, the electric capacity C21 other end, voltage-regulator diode ZD3 positive pole, resistance R7 it is another
One end connects with the electric capacity C17 other end.The model BZX84C13VLT1 of the voltage-regulator diode ZD3, the pole of voltage stabilizing two
Pipe ZD7 model BZX84C3V3LT1, the triode Q3 model MMBT4401LT1, the model of the metal-oxide-semiconductor Q8
IRF540N, the model IRF540N of the metal-oxide-semiconductor Q12.In the moment for the machine of rising, because electric capacity C17 presence has individual delay,
Metal-oxide-semiconductor Q8 is not turned on, and electric current is through resistance R13, and diode forms loop in metal-oxide-semiconductor Q12 bodies, electric capacity C36 chargings is given, now because of electricity
There is electric current to flow through on resistance R13, voltage can be produced at resistance R13 both ends, this voltage turns on triode Q3 base stages, by electric capacity
C17 both end voltages drag down, and metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q12 without driving voltage because being not switched on.When the voltage on electric capacity C36 be charged to it is close
Input voltage, when resistance R13 both end voltages are relatively low, triode Q3 base stages are without driving current, and triode Q3 CE pin both ends are in height
Resistance, electric current give electric capacity C17 to charge by resistance R8, and after electric capacity C17 both end voltages fill up, metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q12 have driving
Voltage DS ends turn on, now because the voltage on electric capacity C36 is more or less the same with input voltage so that metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q12 are beaten
Dash current very little after opening, solve the problems, such as excessive using pressure drop and power consumption existing for the anti-reverse scheme of diode power source.
Reverse connecting protection is analyzed：Loop can not be formed by metal-oxide-semiconductor Q12 during input reverse-connection, when DC- ends are positive voltage and flow back to DC+ ends, MOS
Pipe Q12 is not turned on without driving voltage, and backward voltage is all added in metal-oxide-semiconductor Q12 DS both ends, no-voltage on late-class circuit, so as to protect
Late-class circuit is protected.
Claims (3)
1. a kind of dc-input power is anti-reverse with antisurge typical circuit, it is characterised in that：Including resistance R7, resistance R8, resistance
R11, resistance R12, resistance R13, voltage-regulator diode ZD3, voltage-regulator diode ZD7, electric capacity C17, electric capacity C21, electric capacity C36, three poles
Pipe Q3, metal-oxide-semiconductor Q8 and metal-oxide-semiconductor Q12, resistance R8 one end negative pole with voltage-regulator diode ZD3, resistance R7 one end, electricity respectively
Hold C17 one end, metal-oxide-semiconductor Q12 G poles, triode Q3 colelctor electrode connects with metal-oxide-semiconductor Q8 G poles, the resistance R8 other end and
Electric capacity C36 positive pole connection, electric capacity C36 negative pole one end with electric capacity C21, resistance R13 one end, metal-oxide-semiconductor Q8 D poles respectively
Connected with resistance R11 one end, the resistance R11 other end is connected with voltage-regulator diode ZD7 negative pole, triode Q3 base stage point
It is not connected with resistance R12 one end and voltage-regulator diode ZD7 positive pole, the metal-oxide-semiconductor Q8 S poles transmitting with triode Q3 respectively
Pole, metal-oxide-semiconductor Q12 D poles connection, the resistance R12 other end other end with resistance R13, electric capacity the C21 respectively other end, steady
Pressure diode ZD3 positive pole, the resistance R7 other end connects with the electric capacity C17 other end.
2. dc-input power as described in claim 1 is anti-reverse with antisurge typical circuit, it is characterised in that：The voltage stabilizing two
Pole pipe ZD3 model BZX84C13VLT1, the model BZX84C3V3LT1 of the voltage-regulator diode ZD7.
3. dc-input power as described in claim 1 is anti-reverse with antisurge typical circuit, it is characterised in that：The triode
Q3 model MMBT4401LT1, the metal-oxide-semiconductor Q8 model IRF540N, the model IRF540N of the metal-oxide-semiconductor Q12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374748.7U CN206743103U (en) | 2017-04-11 | 2017-04-11 | A kind of dc-input power is anti-reverse with antisurge typical circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374748.7U CN206743103U (en) | 2017-04-11 | 2017-04-11 | A kind of dc-input power is anti-reverse with antisurge typical circuit |
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| Publication Number | Publication Date |
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| CN206743103U true CN206743103U (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720374748.7U Expired - Fee Related CN206743103U (en) | 2017-04-11 | 2017-04-11 | A kind of dc-input power is anti-reverse with antisurge typical circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947552A (en) * | 2017-12-20 | 2018-04-20 | 四川九洲电器集团有限责任公司 | With anti-reverse and suppression input peak current power module |
| CN111555599A (en) * | 2020-04-29 | 2020-08-18 | 中国电子科技集团公司第二十九研究所 | Power-on surge current suppression circuit and method of capacitor |
-
2017
- 2017-04-11 CN CN201720374748.7U patent/CN206743103U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947552A (en) * | 2017-12-20 | 2018-04-20 | 四川九洲电器集团有限责任公司 | With anti-reverse and suppression input peak current power module |
| CN111555599A (en) * | 2020-04-29 | 2020-08-18 | 中国电子科技集团公司第二十九研究所 | Power-on surge current suppression circuit and method of capacitor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20200411 |
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| CF01 | Termination of patent right due to non-payment of annual fee |