An energy-saving driving circuit of a relay coil
A relay coil and drive circuit technology, applied in relays, circuits, electrical components, etc., can solve the problems of shortening the service life of relays and burning out of coils, and achieve the goals of avoiding burnout of relay coils, long service life, and improving anti-interference ability Effect
Pending Publication Date: 2018-12-18
上海西艾爱电子有限公司
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Problems solved by technology
[0003] If the coil of a high-power relay works under 12VDC for a long time, after the coil is energized for a long time, usually about 30 minutes, the coil will burn out due to excessive heat generation, further shortening the service life of the relay
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[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0053] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0054] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0055] The present invention includes a relay coil energy-saving driving circuit 1, which is arranged on a print...
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The invention discloses a relay coil energy-saving driving circuit, which is arranged on a printed circuit board. The printed circuit board is connected between a power supply device and a relay coil.The invention comprises a filter module. The input end of the filter module is respectively connected with a first output end and a second output end of the power supply device. The voltage stabilizing module comprises a voltage stabilizing circuit and a sampling circuit; The driving module comprises a microprocessor chip, wherein the first pin of the microprocessor chip is connected with the output end of the voltage stabilizing circuit, and the third pin of the microprocessor chip is connected with the output end of the sampling circuit. A relay coil is connected between the output of the drive module and the second output of the filter module. The utility model has the advantages that the electromagnetic compatibility is satisfied, the anti-interference ability of the external power network to the whole relay can be improved, and the driving circuit can absorb the harmonic voltage generated by the pulse width modulation, thereby further avoiding the relay coil from being burned dueto the long-time heat generation, and the service life of the relay coil is longer.
Description
technical field [0001] The invention relates to the technical field of electronic circuits, in particular to an energy-saving drive circuit for relay coils. Background technique [0002] The coil of the relay uses the principle of electromagnetism to realize the conversion of electrical energy into mechanical energy to realize the control function. The coil and the armature inserted in the coil form an electromagnet. The magnetic force generated by the coil electrification will make the armature do mechanical movement and drive the contacts to complete the connection. Or disconnect the circuit to achieve the desired output, so the coil is the main part of the relay, because the current through the coil is very small, and the current or voltage controlled by the head is high, so as to realize small current or small voltage to control large current and high voltage purposes. [0003] If the coil of a high-power relay works under 12VDC for a long time, after the coil is energi...
Claims
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Login to View More IPC IPC(8): H01H47/02
CPCH01H47/02H01H2047/025
Inventor 周军
Owner 上海西艾爱电子有限公司