发明名称 |
Temperature control system with simplified controller and power supply |
摘要 |
The invention includes a simple and inexpensive thermal controller and simple and inexpensive radio frequency alternating current generator which are provided in an improved temperature control system for a resistively heated electrochemical cell. The temperature controller is formed by a single amplifier with feedback circuit which provides the function of a combined deviation amplifier and two mode (percent proportional band and integral functions) controller. The alternating current generator uses a single direct current voltage source to generate a radio frequency alternating electric current. The two elements are combined in a temperature control circuit for a resistively heated electrochemical cell. The control circuit provides an alternating current with varying power by cyclicly shutting the current off for irregular portions of a predetermined cycle period.
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申请公布号 |
US4644138(A) |
申请公布日期 |
1987.02.17 |
申请号 |
US19830488371 |
申请日期 |
1983.04.25 |
申请人 |
CORNING GLASS WORKS |
发明人 |
WALSH, PAUL L. |
分类号 |
G01N27/406;G05D23/20;(IPC1-7):H05B1/02 |
主分类号 |
G01N27/406 |
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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