Inductive load driving circuit
A technology for driving circuits and inductive loads, which is applied in electrical components, climate sustainability, and efficient power electronic conversion. Effect
Active Publication Date: 2020-07-28
浙江桃园智能科技有限公司
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- Abstract
- Description
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- Application Information
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Problems solved by technology
When the inductive load runs for a long time, the current needs to flow continuously through the inductive load. Affected by the thermal effect of the current, the inductive load will continuously generate heat during operation. As the operating time increases, the heat generated will continue to accumulate, resulting in inductive load burning damage
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[0023] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0024] An inductive load driving circuit includes: an input rectification and filtering circuit, a power supply circuit, a control circuit, a main circuit, and a charging capacitor. The input rectification filter circuit includes a diode D5, a diode D6, a diode D7, a diode D8, and a filter capacitor C1. The cathode of the diode D7 is electrically connected to the cathode of the diode D8 and one electrode of the filter capacitor C1, and the anode of the diode D7 is electrically connected to the cathode of the diode D6. The cathode of the diode D5 is electrically connected to the anode of the diode D8, and the anode of the diode D5 is electrically connected to the anode of the diode D6 and the other electrode of the filter c...
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The invention relates to the technical field of driving circuits and particularly relates to an inductive load driving circuit. The inductive load driving circuit comprises a power supply loop, a control circuit, a main circuit and a charging capacitor, wherein the power supply loop outputs a power supply voltage to the charging capacitor to charge the charging capacitor, the charging capacitor outputs a low-level signal to the control circuit till charging is completed, the control circuit outputs a high-level signal to the main circuit according to the low-level signal, when charging of thecharging capacitor is completed, the control circuit outputs a rectangular wave signal to the main circuit, and the main circuit is used for controlling the output current according to the high-levelsignal and the rectangular wave signal. In the prior art, an inductive load is easy to burn and damage during long-term operation. Compared with the prior art, the inductive load driving circuit is advantaged in that the inductive characteristic of the inductive load is utilized, a starting state of the inductive load can still be maintained when the output current is reduced, so operation power consumption is reduced, the heat generated by operation is reduced, combustion damage of the inductive load is effectively prevented, and stability of the inductive load during long-term operation is improved.
Description
technical field [0001] The invention relates to the technical field of drive circuits, in particular to an inductive load drive circuit. Background technique [0002] Inductive load refers to the load whose load current lags behind the load voltage by a phase difference. With the continuous development of technology, inductive load is widely used in many different devices. When the inductive load runs for a long time, the current needs to flow continuously through the inductive load. Affected by the thermal effect of the current, the inductive load will continuously generate heat during operation. As the operating time increases, the heat generated will continue to accumulate, resulting in inductive The load is burnt and damaged. Contents of the invention [0003] Aiming at the technical problems of the prior art, the present invention provides an inductive load driving circuit. [0004] In order to solve the problems of the technologies described above, the present inve...
Claims
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IPC IPC(8): H02M1/08H02M7/04
CPCH02M1/08H02M7/04H02M1/0048Y02B70/10
Inventor 陶国良陶勇
Owner 浙江桃园智能科技有限公司