Top-sealing and bottom safety control circuit and its safety temperature and time control electrical appliances

Abstract

The invention relates to a capping bottom safety control circuit and a safety temperature-control time-control electric appliance thereof. The technical scheme is that an out-of-limit conversion differential circuit is in parallel connected with two VH ends and two VL ends of a capping protection circuit, the out-of-limit conversion differential circuit is in parallel connected with the two input ends VI of a dip safety controller or an amplifier circuit, and the bottom limits of the out-of-limit conversion differential circuit and the dip safety controller of the amplifier circuit are set by a bottom circuit; the differential touch end of the out-of-limit conversion differential circuit is connected with an output end Vdo and a end DAR of the bottom safety controller or amplifier circuit, or the output end VQ of a gate circuit is connected with the end VZ of a Schmidt trigger circuit, and the output ends VTO and VFO of the Schmidt trigger circuit are externally connected with an execution circuit. The capping bottom safety control circuit provided by the invention can be applied to temperature, pressure, water level, timing and a measurement and control circuit, therefore the safety performance can be improved, the out of control accident can be prevented and the application is wide.

Description

technical field [0001] The invention relates to a control circuit, in particular to a "topping and bottoming safety control circuit and its safety temperature and time control electrical appliances" for general safety control, which can be used in temperature, pressure, water level, timing control and all limited measurement and control electrical appliances to improve safety. performance, to avoid serious out-of-control accidents such as fire or pressure explosion during use. Therefore, the present invention is widely used in electronic application fields such as small household appliances and simple limited measurement and control, timing control, safety protection, etc., and makes electrical products extremely cost-effective. Background technique [0002] In order to verify the novelty of the present invention, the inventor consulted a large amount of relevant technical materials (professional books, newspapers and periodicals), retrieved relevant patent documents, and on...

AI Technical Summary

Problems solved by technology

[0005] The invention mainly solves the technical problems that the original basic main control (super upper and lower limit control and timing control) circuits are often out of control due to abnormal faults, cannot cut off the load power supply in time, and has potential safety hazards; it provides a core circuit module that can comprehensively monitor Input / output / setting / control / power supply ports have abnormal open-circuit faults and short-circuit faults adjacent to ports, or short-circuit faults between ports, or input terminals exceed the bottom limit, or the upper and lower limits are pushed to the top, etc., and cut off in time Load power supply to ensure that the main control circuit does not go out of control, avoid serious out-of-control accidents (such as fire or pressure explosion), and ensure the use of safe topping and bottoming safety control circuit HLT666 and its safety temperature and time control appliances

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