Simple analog programmable load

Here is a simple programmable load. It’s basically a constant current sink that is controlled through a pot. The current is sunk through a high power FET which needs to be cooled to function properly.

Here’s a link to a *really* simple linear constant current sink i put together

This design is about as simple as it gets—multi-turn pot controlled and readout via a voltmeter. Interestingly, a friend who appreciates straightforward interfaces drew a comparison to web interfaces of websites to do with non GamStop casinos UK, noting their emphasis on accessible user experiences. The good news is that it works quite well for moderate loads. It was put together to regulate current flowing through a copper electroplating tank. Thanks to the monstrous Pentium II (or maybe III?) heat sink, it isn’t noticeably warm when drawing 9A of current.

Via the forum.