Yeah, have done that more than once. Was considering it. I have always called these salt water rheostat. Last time I did it was to make a foam cutter with nichrome wire (the wire I am currently searching for). Everyone in the shop thought I was crazy putting wires in a bucket of salt water.
Built a 25kW resistor a couple weeks ago to test a 500 amp welder. Use long strips of stainless steel set on edge running around on the shop floor. 130 feet I think. Got really hot really fast. The test was short. From: Ken Hohhof Sent: Friday, August 28, 2015 8:37 PM To: [email protected] Subject: Re: [AFMUG] It is official https://en.wikipedia.org/wiki/Liquid_rheostat From: [email protected] Sent: Friday, August 28, 2015 5:55 PM To: [email protected] Subject: Re: [AFMUG] It is official OK, did a 10 amp test, no heat to speak of. (30 volts). Having a hard time finding a half ohm load at 150 watts. Used a coil of #16 wire which was too high (impedance) of a load. Also, putting two Astron power supplies in series. They don’t play well with each other. I used to have a coil of nichrome. May need to find that. From: [email protected] Sent: Friday, August 28, 2015 12:33 PM To: [email protected] Subject: Re: [AFMUG] It is official No, 7 amp. 30 amps will get the PCB traces a bit hot, perhaps glowing hot. I guess I should test one to destruction.... From: George Skorup Sent: Friday, August 28, 2015 11:33 AM To: [email protected] Subject: Re: [AFMUG] It is official So is that like a 30A fuse you're shipping with it? Or do they actually make a 5x20mm shorting link? On 8/28/2015 11:15 AM, [email protected] wrote: �
