Heating Control (CB21371E)

This circuit for powers up to 240 W was found in a 1967 RCA SCR manual. The SCR must be in accordance with the controlled load.

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Temperature sensor 0 to 50º C degrees (CB10172E)
This circuit uses a transistor as a sensor and operates in the range of 0 to 50º C. We found it in...
Band-Pass Filter (CB14921E)
This circuit was found in a Poptronics of the 90's. The components can be changed to the desired...
Reverse polarity protection circuit (CB21582E)
In the figure we have an interesting protection bridge against power polarity inversion of a...