JPS5949214U

JPS5949214U - Temperature control device for thermosensitive heating element

Info

Publication number: JPS5949214U
Application number: JP14602582U
Authority: JP
Inventors: 遠藤　輝巳
Original assignee: 松下電工株式会社
Priority date: 1982-09-25
Filing date: 1982-09-25
Publication date: 1984-04-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は感熱面発熱体の断面図、第２図は従来の感熱面
発熱体の温度制御装置の回路図、第３図はこの考案の一
実施例の回路図である。 ■・・・・・・感熱面発熱体、■・・・・・・温度検出
回路、■・・・・・・比較回路、■・・・・・・スイッ
チング回路、■・・曲　　　−過昇防止回路、■・・・
・・・遮断回路、■・・・・・・過昇防止回路、■・・
・・・・比較回路、ＯＳＣ・・・・・・高周波発振回路
、Ｃ・・・・・・コンデンサ、Ｆ・・・・・・フィルタ
。FIG. 1 is a sectional view of a heat-sensitive surface heating element, FIG. 2 is a circuit diagram of a conventional temperature control device for a heat-sensitive surface heating element, and FIG. 3 is a circuit diagram of an embodiment of this invention. ■・・・Thermosensitive surface heating element, ■・・・Temperature detection circuit, ■・・・Comparison circuit, ■・・・Switching circuit, ■・・・Song −Overrise Prevention circuit, ■...
... Cutoff circuit, ■... Overheating prevention circuit, ■...
... Comparison circuit, OSC ... High frequency oscillation circuit, C ... Capacitor, F ... Filter.

Claims

[Scope of utility model registration request]

A high-frequency voltage is applied to a power source that supplies power to a heater circuit of the heat-sensitive heating element, a switch interposed between the heater circuit of the heat-sensitive heating element and the power source, and a heat-sensitive element of the heat-sensitive heating element via a voltage dividing capacitor. a high-frequency oscillation circuit that converts the voltage across the heat-sensitive element of the heat-sensitive heating element into a DC voltage; and a filter circuit that converts the voltage across the heat-sensitive element of the heat-sensitive heating element into a DC voltage; a temperature control comparison circuit that maintains the body temperature at a set temperature; a 51st overrise detection circuit that detects an abnormality in the output voltage of the filter circuit; and a 51st overrise detection circuit that detects an abnormality in the voltage across the thermal element of the thermal heating element. and a cutoff circuit that forcibly cuts off power supply from the power supply to the heater circuit of the thermal heating element in response to the outputs of the first and second overrise detection circuits. Temperature control device for thermosensitive heating element.