A temperature control circuit with high temperature alarm function
A temperature control circuit and alarm circuit technology, applied in the field of circuits, can solve the problems of complex temperature control circuit, high energy consumption, low control sensitivity, etc., and achieve the effects of high external interference, less components used, and high temperature control accuracy.
Active Publication Date: 2016-09-28
SUZHOU INST OF BIOMEDICAL ENG & TECH
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Problems solved by technology
[0002] The temperature control circuits in the prior art are generally more complex, with high energy consumption and low regulation sensitivity. Most of them use AC temperature control. Even if direct temperature control is used, pulsed DC is used to perform frequency modulation or amplitude modulation on DC. This circuit is not only complicated , and greatly interfere with the accused and the outside world
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[0021] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and the embodiments.
[0022] Reference figure 1 As shown, a temperature control circuit with a high temperature alarm function includes a high temperature alarm circuit 1, a temperature measurement bridge 2, an amplifier circuit 3, a follower circuit 4 and a constant current source 5. The output terminal of the temperature measurement bridge 2 Connected to the input end of the amplifying circuit 3, the output end of the amplifying circuit 3 is connected to the input end of the follower circuit 4, and the amplifying circuit 3 and the follower circuit 4 are connected in series through a second resistor R29 The output terminal of the follower circuit 4 is connected to the constant current source 5, and the follower circuit and the constant current source are connected in series through a third resistor R30.
[0023] Further, the temperature measuring bridge circuit 2 is c...
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The invention discloses a temperature control circuit with a high-temperature alarm function. The temperature control circuit comprises a high-temperature alarm circuit, a temperature measuring bridge, an amplifier circuit, a follower circuit and a constant current source, wherein the output end of the temperature measuring bridge is connected with the input end of the amplifier circuit; the output end of the amplifier circuit is connected with the input end of the follower circuit; the amplifier circuit is further connected with the follower circuit through a second resistor R29 in series; the output end of the follower circuit is connected with the constant current source; the follower circuit is connected with the constant current source through a third resistor R30 in series. Through the adoption the technical scheme, the temperature control circuit has the advantages that the structure is simple, less components are used, no external interference is caused, and the temperature precision is high, and the temperature control circuit can be widely applied to the fields of electronics, communication, medicine and the like.
Description
Technical field [0001] The invention relates to the field of circuits, in particular to a temperature control circuit with a high temperature alarm function. Background technique [0002] The temperature control circuit in the prior art is generally more complicated, has high energy consumption, and has low control sensitivity. AC temperature is often used for temperature control. Even if direct temperature control is used, pulsed DC is used to modulate the frequency or amplitude of DC. This circuit is not only complicated , And it has great interference to the accused and the outside world. Summary of the invention [0003] The purpose of the present invention is to overcome the above problems in the prior art and provide a temperature control circuit with a high temperature alarm function. [0004] In order to achieve the above technical objectives and achieve the above technical effects, the present invention is achieved through the following technical solutions: [0005] A tempe...
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IPC IPC(8): G05D23/24
Inventor 董宁宁檀慧明王帆崔锦江田玉冰
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH