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andy_gao
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樓主  發(fā)表于: 2014-11-21 21:23
溫控器+固態(tài)繼電器是怎么控制電熱管的溫度的，以下2種哪種是對的？？

1、溫控器輸出直流電壓到固態(tài)繼電器，通過(guò)這個(gè)電壓大小，調整固態(tài)繼電器輸出端的電壓，從而控制電熱管的發(fā)熱功率

2、溫控器輸出直流電壓信號到固態(tài)繼電器，有直流電壓后固態(tài)繼電器輸出端通路，電熱管工作。沒(méi)有電壓就斷開(kāi)輸出端，電熱管斷電不工作，只控制電熱管的通斷
john42tw
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1樓  發(fā)表于: 2014-11-28 16:58
引用
引用第17樓zhuo610616于2014-11-28 08:22發(fā)表的  :
第一種方法現在有什么溫控器可以做到啊，有那位大師用過(guò)啊

一般溫控器大廠(chǎng)都有在作，但要先指定控制方式。
大多以4~20mA信號控制SCR。

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