I am building an ECM (electro chemical macihning) machine. I have a tool (GND) and a work piece (V+). I am going to dissolve the work piece using 5V 100A (or perhaps 12V 50A) through a gap and electrolyte. I want to run 5V ~100mA through the work piece at all times and use a relay off the tool to …

Reverse Relay?

Docedison September 15, 2012, 8:22am 9

That's why I bought them, had to buy 15 to get 2... $5.00?

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