Pilot type control circuit

Abstract

The invention relates to a pilot control circuit which comprises a transformer, a current-limited circuit, a filter capacitor, a full-wave rectification and filtering circuit, a voltage dividing and discharging circuit, a double-limit comparison circuit, a base line follow reference voltage circuit, a power supply circuit and a relay circuit; the transformer, the current-limited circuit, the filter capacitor, the full-wave rectification and filtering circuit, the voltage dividing and discharging circuit and the double-limit comparison circuit are electrically connected; the power supply circuit is respectively and electrically connected with the base line follow reference voltage circuit and the double-limit comparison circuit, and the double-limit comparison circuit is connected with the relay circuit. In addition, the invention has the advantages that the use is convenient, and the external wiring is free from the limitation of polarity; the performance is secure and reliable, and the service life is long; the reference voltage base line follow technology is adopted, so that the adaptability is high; the response speed is high; the circuit is simple, and the cost is low; moreover, the invention can correctly distinguish the states of short circuit, disconnection and normal work of the external wiring and eliminates the potential safety hazard.

Description

technical field [0001] The invention relates to pilot control technology in the fields of electric control, monitoring equipment and the like, in particular to a pilot control circuit. Background technique [0002] At present, there are many deficiencies in the pilot control circuit in the fields of electrical control and monitoring equipment, mainly in: 1) the wiring is very inconvenient, and there are polarities, and once the connection is reversed, the circuit may be burned; 2) the power supply The adaptability is very poor. When the external power supply fluctuates greatly, it will cause mishandling of the equipment; 3) It cannot clearly distinguish the short-circuit, disconnection, and normal states of the external circuit, and there are hidden dangers in safety; 4) Response The speed is slow, and the general response time is greater than 200ms. Due to the above shortcomings of the existing pilot control circuit, it often leads to misoperation of the rear equipment, an...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many deficiencies in the pilot control circuit in the fields of electrical control and monitoring equipment, mainly in: 1) the wiring is very inconvenient, and there are polarities, and once the connection is reversed, the circuit may be burned; 2) the power supply The adaptability is very poor. When the external power supply fluctuates greatly, it will cause mishandling of the equipment; 3) It is impossible to clearly distinguish the short-circuit, disconnection, and normal states of the external circuit, and there are hidden dangers in safety; 4) Response Slow speed, the general response time is greater than 200ms

Due to the above shortcomings of the existing pilot control circuit, it often leads to malfunction of the rear equipment, and in severe cases, it will damage the equipment, cause casualties, and bring a lot of property and personal losses to the country and the people.

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