CN201928186U - Sliding frequency soft startup circuit applied to electromagnetic induction heating power supply - Google Patents
Sliding frequency soft startup circuit applied to electromagnetic induction heating power supply Download PDFInfo
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- CN201928186U CN201928186U CN2011200127663U CN201120012766U CN201928186U CN 201928186 U CN201928186 U CN 201928186U CN 2011200127663 U CN2011200127663 U CN 2011200127663U CN 201120012766 U CN201120012766 U CN 201120012766U CN 201928186 U CN201928186 U CN 201928186U
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Abstract
The utility model discloses a sliding frequency soft startup circuit applied to an electromagnetic induction heating power supply, which comprises a chip TL598 (U1). The sliding frequency soft startup circuit is characterized in that a transistor (Q4) is also arranged in the circuit, the c end of the transistor (Q4) is serially connected with a resistor (R16), the resistor (R16) is parallelly connected with a resistor (R15), the e end of the transistor (Q4) is grounded, the b end of the transistor (Q4) is grounded through a resistor (R17), the b end of the transistor (Q4) is serially connected with a resistor (R18) and a capacitor (E2), and the capacitor (E2) is connected with a power supply. The sliding frequency soft startup circuit provided by the utility model can adapt to frequent startup, can increase the temperature control precision of a heating system, does not cause fluctuation of power grid voltage, reduces the impact on other power utilization equipment, and has energy-saving and IGBT (insulated gate bipolar transistor)-protecting effects.
Description
Technical field
The utility model relates to a kind of sliding soft starting circuit frequently that is applied to electromagnetic induction heating power supply.
Background technology
The Switching Power Supply that output current is bigger, current over pulse (current over pulse is unfavorable to the power device of equipment output stage, also electrical network is produced and disturbs) appears when preventing to start shooting in electronic equipments such as corona treatment, all is provided with soft starting circuit.Circuit commonly used is to seal in the high-power resistance current limliting in main power circuit.On high-power resistance, be parallel with the normally opened contact of controllable silicon or contactor.After the start, circuit can make the controllable silicon conducting, or makes contactor upset and the short circuit current limitation high-power resistance, thus the rush of current can reduce just to have started shooting the time.But this soft starting circuit can not adapt to the electromagnetic induction heating power supply of frequent switching on and shutting down.Therefore, should provide a kind of new technical scheme to address the above problem.
The utility model content
The purpose of this utility model is: provide a kind of and have energy-conservationly, protective circuit and external load are applied to the sliding soft starting circuit frequently of electromagnetic induction heating power supply.
For achieving the above object, the technical solution adopted in the utility model is:
Be applied to the sliding soft starting circuit frequently of electromagnetic induction heating power supply, comprise chip TL598U1,1 pin of described chip TL598U1-----is connected with 16 pin, 2 pin of described chip TL598U1 are connected with 15 pin, 4 pin of described chip TL598U1 are by resistance R 13 ground connection, 4 pin of described chip TL598U1 pass through resistance R 12 respectively with 13,14 pin connect, described 13, be connected with resistance R 11 between 14 pin and 15 pin, 5 pin of described chip TL598U1 are by capacitor C 9 ground connection, 6 pin of described chip TL598U1 are by resistance R 15 ground connection, the 7 pin ground connection of described chip TL598U1,8 of described chip TL598U1,9 pin are drive signal outputs, the 10 pin ground connection of described chip TL598U1,11 pin of described chip TL598U1 are connected with power supply, be provided with K switch 1 between 12 pin of described chip TL598U1 and the power supply, also be provided with transistor Q4 in described this circuit, the c end serial resistance R16 of described transistor Q4, and resistance R 16 is connected to resistance R 15, the e end ground connection of described transistor Q4, the b end of described transistor Q4 is by resistance R 17 ground connection, and the b of transistor Q4 end is in series with resistance R 18 and electric capacity E2, and described electric capacity E2 is connected with power supply.
The utility model is applied to the sliding soft starting circuit frequently of electromagnetic induction heating power supply, and chip TL598U1 is a control circuit for pulse-width modulation, is widely used in various inverter circuits.Increase a transistor Q4 on the basis of its typical application circuit again, electric capacity E2 and resistance R 16, resistance R 17 and resistance R 18 have just constituted sliding frequency soft starting circuit, have reached the purpose of sliding frequency soft start.
The utility model has the advantages that: the sliding soft starting circuit frequently that is applied to electromagnetic induction heating power supply guarantees that there is not impulse current in entire circuit in the overall process that starts; but level and smooth startup operation; can adapt to frequent starting; the fluctuation that helps improving the control precision of heating system and can not cause line voltage; influence to other equipment is very little, has effect energy-conservation and protection IGBT.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
As shown in Figure 1, the utility model is applied to the sliding soft starting circuit frequently of electromagnetic induction heating power supply, comprise chip TL598U1,1 pin of chip TL598U1-----is connected with 16 pin, 2 pin of chip TL598U1 are connected with 15 pin, 4 pin of chip TL598U1 are by resistance R 13 ground connection, 4 pin of chip TL598U1 pass through resistance R 12 respectively with 13,14 pin connect, 13, be connected with resistance R 11 between 14 pin and 15 pin, 5 pin of chip TL598U1 are by capacitor C 9 ground connection, 6 pin of chip TL598U1 are by resistance R 15 ground connection, the 7 pin ground connection of chip TL598U1,8 of chip TL598U1,9 pin are drive output, the 10 pin ground connection of chip TL598U1,11 pin of chip TL598U1 are connected with power supply, be provided with K switch 1 between 12 pin of chip TL598U1 and the power supply, also be provided with transistor Q4 in this circuit, the c end serial resistance R16 of transistor Q4, and resistance R 16 also connects and resistance R 15, the e end ground connection of transistor Q4, the b of transistor Q4 end is by resistance R 17 ground connection, and the b of Q4 end is in series with resistance R 18 and electric capacity E2, and electric capacity E2 is connected with power supply.
The sliding operation principle of soft starting circuit frequently that the utility model is applied to electromagnetic induction heating power supply is: 11 pin of TL598U1 are power ends of chip output stage, 12 pin are power ends of sheet inner control and oscillating circuit, the power supply of K1 switch chip, 5 pin connect capacitor C 9 over the ground, 6 pin are connecting resistance R15 over the ground, the operating frequency fo=1/C9*R15 of circuit when the typical case uses, change 6 pin resistance value over the ground, can change operating frequency fo, the c of transistor Q4 end series resistance R16 in this circuit, resistance R 16 is connected to R15, chip is started working when the K1 power supply that closes adds to 12 pin, 8 pin, 9 pin output drive signals, and power supply is by the b of Q4 simultaneously, e end and resistance R 17, R18 charges to electric capacity E2.Pass through b during beginning, the electric current maximum of e end, transistor Q4 saturation conduction, 6 pin resistance to earth are approximately the parallel connection value of R15 and R16, the operating frequency of circuit is the highest, and along with the E2 charging current reduces gradually until zero, the conducting electric current of Q4 also reduces gradually until ending, this moment, the resistance to earth of 6 pin was the value of R15, and the operating frequency of circuit slowly is low to moderate the purpose that rated frequency has reached sliding frequency soft start from the highest of beginning.
Claims (1)
1. be applied to the sliding soft starting circuit frequently of induction heating power, comprise chip TL598(U1), described chip TL598(U1) 1 pin is connected with 16 pin, described chip TL598(U1) 2 pin are connected with 15 pin, described chip TL598(U1) 4 pin are by resistance (R13) ground connection, described chip TL598(U1) 4 pin pass through resistance (R12) respectively with 13,14 pin connect, described 13, be connected with resistance (R11) between 14 pin and 15 pin, described chip TL598(U1) 5 pin are by electric capacity (C9) ground connection, described chip TL598(U1) 6 pin are by resistance (R15) ground connection, described chip TL598(U1) 7 pin ground connection, described chip TL598(U1) 8,9 pin are drive signal outputs, described chip TL598(U1) 10 pin ground connection, described chip TL598(U1) 11 pin are connected with power supply, described chip TL598(U1) is provided with switch (K1) between 12 pin and the power supply, it is characterized in that: also be provided with transistor (Q4) in described this circuit, the c end of described transistor (Q4) is connected with resistance (R16), and resistance (R16) is connected to resistance (R15), the e end ground connection of described transistor (Q4), the b end of described transistor (Q4) is by resistance (R17) ground connection, and the b of transistor (Q4) end is in series with resistance (R18) and electric capacity (E2), and described electric capacity (E2) is connected with power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200127663U CN201928186U (en) | 2011-01-17 | 2011-01-17 | Sliding frequency soft startup circuit applied to electromagnetic induction heating power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200127663U CN201928186U (en) | 2011-01-17 | 2011-01-17 | Sliding frequency soft startup circuit applied to electromagnetic induction heating power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201928186U true CN201928186U (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200127663U Expired - Lifetime CN201928186U (en) | 2011-01-17 | 2011-01-17 | Sliding frequency soft startup circuit applied to electromagnetic induction heating power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN201928186U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580466A (en) * | 2013-11-07 | 2014-02-12 | 北京机械设备研究所 | Voltage control type slow starting circuit with hysteresis function |
| CN107733219A (en) * | 2017-11-01 | 2018-02-23 | 广州金升阳科技有限公司 | A kind of Switching Power Supply output soft start circuit |
| CN109742935A (en) * | 2018-11-27 | 2019-05-10 | 中国船舶重工集团公司第七一八研究所 | A kind of high-tension circuit of negative high voltage air-conditioning ion wind apparatus |
-
2011
- 2011-01-17 CN CN2011200127663U patent/CN201928186U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580466A (en) * | 2013-11-07 | 2014-02-12 | 北京机械设备研究所 | Voltage control type slow starting circuit with hysteresis function |
| CN103580466B (en) * | 2013-11-07 | 2016-03-30 | 北京机械设备研究所 | A kind of voltage-controlled type soft-start circuit with stagnant ring function |
| CN107733219A (en) * | 2017-11-01 | 2018-02-23 | 广州金升阳科技有限公司 | A kind of Switching Power Supply output soft start circuit |
| WO2019085544A1 (en) * | 2017-11-01 | 2019-05-09 | 广州金升阳科技有限公司 | Output soft-start circuit for switching power supply |
| CN109742935A (en) * | 2018-11-27 | 2019-05-10 | 中国船舶重工集团公司第七一八研究所 | A kind of high-tension circuit of negative high voltage air-conditioning ion wind apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226200 Jiangsu city of Nantong province Qidong City Huilong Town Industrial Park Corner Patentee after: NANTONG SANXIN PLASTICS EQUIPMENT TECHNOLOGY CO., LTD. Address before: 226200 Jiangsu city of Nantong province Qidong City Huilong Town Industrial Park Corner Patentee before: Nantong Sanxin Plastics Equipment Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
|
| CX01 | Expiry of patent term |