发明名称 |
Temperature monitoring circuit |
摘要 |
A temperature monitoring circuit includes a negative temperature coefficient (NTC) resistor, a zener diode, an alarm, a silicon controlled rectifier. A first terminal of the NTC resistor is connected to a power supply through a first resistor. A second terminal of the NTC resistor is grounded. A cathode of the zener diode is connected to a node between the NTC resistor and the first resistor. An anode is grounded through a second resistor. A first terminal of the alarm is connected to the cathode of the zener diode, and is grounded through a third and fourth resistors in series. A cathode of the silicon controlled rectifier is connected to the anode of the zener diode. An anode of the silicon controlled rectifier is connected to a second terminal of the alarm. A control terminal of the silicon controlled rectifier is connected to a node between the third and fourth resistors.
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申请公布号 |
US8514089(B2) |
申请公布日期 |
2013.08.20 |
申请号 |
US201113012825 |
申请日期 |
2011.01.25 |
申请人 |
HUANG YONG-ZHAO;HONG FU JIN PRECISION INDUSTRY (SHENZHEN) CO., LTD.;HON HAI PRECISION INDUSTRY CO., LTD. |
发明人 |
HUANG YONG-ZHAO |
分类号 |
G08B17/00;G01K7/00;G08B1/00;G08B1/08;G08B17/10;G08B23/00;H03H1/00;H03H5/10 |
主分类号 |
G08B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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