CN211456994U - High-voltage-to-low-voltage rapid discharge circuit based on rapid charging adapter - Google Patents
High-voltage-to-low-voltage rapid discharge circuit based on rapid charging adapter Download PDFInfo
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- CN211456994U CN211456994U CN202020573796.0U CN202020573796U CN211456994U CN 211456994 U CN211456994 U CN 211456994U CN 202020573796 U CN202020573796 U CN 202020573796U CN 211456994 U CN211456994 U CN 211456994U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a high pressure changes low pressure quick discharge circuit based on fill adapter soon, including transformer T1, optical coupler U2, benchmark steady voltage source U1, diode D1, polarity electric capacity CE1, resistance R5, electric capacity C2, resistance R7, resistance R6, resistance R2, triode Q1, triode Q2, resistance R1, electric capacity C1, resistance R4 to and resistance R3. The utility model provides a change low pressure quick discharge circuit based on fill adapter soon, great improvement the speed of product step-down under the prerequisite that does not improve circuit stand-by power consumption, improved 100 milliseconds by original at least 400 milliseconds step-down speed, and then fine protection electronic equipment, the better electronic equipment who avoids inserting damages because of adapter voltage is too high.
Description
Technical Field
The utility model belongs to the electronic circuit field specifically indicates high pressure changes low pressure quick discharge circuit based on fill adapter soon.
Background
With the rise of consumer electronic products, more and more rapid charging adapters are matched with the consumer electronic products, the processing time of the conventional rapid charging adapters is particularly long when the output voltage is switched from high voltage to low voltage, generally more than 400 milliseconds, and if an electronic device requiring low voltage is suddenly inserted at the time, the electronic device is easily damaged due to the fact that the voltage of the adapter is still at a high potential.
The present application was devised to overcome the above problems and reduce the risk of damage to electronic equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned problem, provide the high pressure based on fill the adapter soon and change low pressure quick discharge circuit, greatly improved the speed of product step-down under the prerequisite that does not improve circuit standby power consumption, improved 100 milliseconds by original at least 400 milliseconds step-down speed, and then fine protection electronic equipment, the better electronic equipment who avoids inserting damages because of adapter voltage is too high.
The purpose of the utility model is realized through the following technical scheme:
a high-voltage to low-voltage rapid discharge circuit based on a rapid charging adapter comprises a transformer T1, an optical coupler U2, a reference voltage regulator U1, a diode D1, a polar capacitor CE1, a resistor R5, a capacitor C2, a resistor R7, a resistor R3657327, a resistor Q7 and a resistor C2, wherein the P pole of the diode D1 is connected with one end of a secondary side inductance coil of the transformer T1, the N pole of the diode D1 is used as a power output end, the anode of the polar capacitor CE1 is connected with the N pole of the diode D1, the cathode of the polar capacitor CE1 is grounded, the resistor R5 is connected between the positive input end and the negative output end of the optical coupler U2 in series, the resistor R6 is connected between the K pole and the R pole of the reference voltage regulator U1 in series, one end of the resistor R36 1 and the A pole of the reference voltage regulator U1 is connected with the connection point of the resistor R7 and the capacitor C2, the other end of the resistor, A resistor R1 with the other end connected with the N pole of the diode D1, a capacitor C1 connected with the resistor R1 in parallel, and a resistor R3 with one end connected with the B pole of the triode Q2 and the other end connected with the E pole of the triode Q2 after passing through the resistor R4; the primary side inductance coil of the transformer T1 is used as a power input end, the positive output end of the secondary side inductance coil of the transformer T1 is connected with the P pole of the diode D1, the negative output end of the secondary side inductance coil of the transformer T1 is connected with the negative pole of the polar capacitor CE1 and is grounded, and the B pole of the triode Q1 is connected with the resistor R2.
The C pole of the triode Q1 is connected with the B pole of the triode Q2, the E pole of the triode Q1 is connected with the N pole of the diode D1, and the C pole of the triode Q2 is connected with the E pole of the triode Q1.
The connection point of the resistor R3 and the resistor R4 is grounded, and the A pole of the reference voltage regulator U1 is grounded.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model discloses a circuit structure is not improving the speed of product step-down by the very big improvement under the prerequisite of circuit stand-by power consumption, improves 100 milliseconds by original at least 400 milliseconds step-down speed, and then fine protection electronic equipment, the better electronic equipment who avoids inserting damages because of adapter voltage is too high.
Drawings
Fig. 1 is a circuit structure diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Examples
As shown in fig. 1, the high-voltage to low-voltage fast discharge circuit based on the rapid charging adapter includes a transformer T1, an optical coupler U2, a reference regulator U1, a diode D1 whose P pole is connected to one end of a secondary side inductor of the transformer T1 and N pole is used as a power output end, a polar capacitor CE1 whose positive pole is connected to the N pole of the diode D1 and whose negative pole is grounded, a resistor R5 connected in series between a positive input end and a negative output end of the optical coupler U2, a capacitor C2 connected in series between the K pole and the R pole of the reference regulator U1, a resistor R7 connected in series between the R pole and the a pole of the reference regulator U1, a resistor R6 whose one end is connected to a connection point of the resistor R7 and the capacitor C2 and whose other end is connected to the N pole of the diode D1, a resistor R2 connected to the positive input end of the optical coupler U2, and a triode Q5, a triode 2, and a triode Q57323, one end of which is connected to the B pole, A resistor R1 with the other end connected with the N pole of the diode D1, a capacitor C1 connected with the resistor R1 in parallel, and a resistor R3 with one end connected with the B pole of the triode Q2 and the other end connected with the E pole of the triode Q2 after passing through the resistor R4; the primary side inductance coil of the transformer T1 is used as a power input end, the positive output end of the secondary side inductance coil of the transformer T1 is connected with the P pole of the diode D1, the negative output end of the secondary side inductance coil of the transformer T1 is connected with the negative pole of the polar capacitor CE1 and is grounded, and the B pole of the triode Q1 is connected with the resistor R2; the C electrode of the triode Q1 is connected with the B electrode of the triode Q2, the E electrode of the triode Q1 is connected with the N electrode of the diode D1, and the C electrode of the triode Q2 is connected with the E electrode of the triode Q1; the connection point of the resistor R3 and the resistor R4 is grounded, and the A pole of the reference voltage regulator U1 is grounded.
The working principle is as follows: when the power supply works, the resistor R1, the resistor R2, the resistor R5 and the reference voltage-stabilizing source U1 provide a high bias voltage for the base electrode of the PNP triode Q1, so that the triode Q1 does not work, no current flows from the emitter electrode to the collector electrode of the triode Q1, no voltage drop exists on the resistor R3, the base electrode of the NPN triode Q2 is at a low potential, the triode Q2 does not work, and the whole discharging circuit does not work. When the power supply voltage is switched from high voltage to low voltage, the bias voltage provided for the base electrode of the PNP triode Q1 by the resistor R1, the resistor R2, the resistor R5 and the reference voltage-stabilizing source U1 is reduced, the triode Q1 is conducted, and the potential of the base electrode of the NPN triode Q2 is raised, so that the triode Q2 is conducted, the output voltage is accelerated to discharge by a discharge circuit consisting of the triode Q2 and the resistor R4, the time from high voltage discharge to low voltage is reduced from at least 400 milliseconds to within 100 milliseconds, and the electronic product is prevented from being damaged due to overvoltage when the electronic product is adapted.
As described above, the utility model discloses alright fine realization.
Claims (3)
1. A high-voltage to low-voltage quick discharge circuit based on a quick charging adapter comprises a transformer T1, an optical coupler U2, a reference voltage stabilizing source U1, a diode D1, a polar capacitor CE1, a resistor R5, a capacitor C2, a resistor R7, a resistor R6329 and a capacitor C2, a resistor R6 and a resistor R2, wherein the P pole of the diode D82 1 is connected with one end of a secondary side inductance coil of the transformer T1, the N pole of the diode D638 is used as a power output end, the anode of the diode D82 1 is connected with the N pole of the diode D1, the cathode of the diode is connected with the N pole of the diode, the resistor R3926 is connected between the R pole and the A pole of the reference voltage stabilizing source U1 in series, one end of the resistor R6329 and the connection point of the capacitor C2 are connected with the other end of the N pole of the diode D1, and: the circuit also comprises a triode Q1, a triode Q2, a resistor R1 with one end connected with the B pole of the triode Q1 and the other end connected with the N pole of a diode D1, a capacitor C1 connected with the resistor R1 in parallel, and a resistor R3 with one end connected with the B pole of the triode Q2 and the other end connected with the E pole of the triode Q2 after passing through the resistor R4; the primary side inductance coil of the transformer T1 is used as a power input end, the positive output end of the secondary side inductance coil of the transformer T1 is connected with the P pole of the diode D1, the negative output end of the secondary side inductance coil of the transformer T1 is connected with the negative pole of the polar capacitor CE1 and is grounded, and the B pole of the triode Q1 is connected with the resistor R2.
2. The fast charging adapter based high-voltage-to-low-voltage fast discharging circuit according to claim 1, characterized in that: the C pole of the triode Q1 is connected with the B pole of the triode Q2, the E pole of the triode Q1 is connected with the N pole of the diode D1, and the C pole of the triode Q2 is connected with the E pole of the triode Q1.
3. The fast charging adapter based high-voltage-to-low-voltage fast discharging circuit according to claim 2, characterized in that: the connection point of the resistor R3 and the resistor R4 is grounded, and the A pole of the reference voltage regulator U1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020573796.0U CN211456994U (en) | 2020-04-16 | 2020-04-16 | High-voltage-to-low-voltage rapid discharge circuit based on rapid charging adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020573796.0U CN211456994U (en) | 2020-04-16 | 2020-04-16 | High-voltage-to-low-voltage rapid discharge circuit based on rapid charging adapter |
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| Publication Number | Publication Date |
|---|---|
| CN211456994U true CN211456994U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020573796.0U Active CN211456994U (en) | 2020-04-16 | 2020-04-16 | High-voltage-to-low-voltage rapid discharge circuit based on rapid charging adapter |
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| Country | Link |
|---|---|
| CN (1) | CN211456994U (en) |
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2020
- 2020-04-16 CN CN202020573796.0U patent/CN211456994U/en active Active
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Address after: Room 101-401, building 38, digital Silicon Valley Industrial Park, No. 999, Yinhuang East Road, Maanshan economic and Technological Development Zone, 243000, Anhui Province Patentee after: Dongke semiconductor (Anhui) Co.,Ltd. Address before: Room 101-401, building 38, digital Silicon Valley Industrial Park, No. 999, Yinhuang East Road, Maanshan economic and Technological Development Zone, 243000, Anhui Province Patentee before: ANHUI DONGKE SEMICONDUCTOR Co.,Ltd. |