Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again
wulfman at wulfman.com
Mon Oct 26 10:07:45 CDT 2015
Distilled water will not conduct. Its a perfect insulator. It will work
On 10/26/2015 7:45 AM, Jerry Weiss wrote:
> Water in the dummy load? Water cooled - sure. Water immersed? Even though I see it posted on the web, i have may doubts it would be a stable method.
> Oil is the usual medium here. Excluding of course the pre-1980 transformer oils that were notorious for having contaminated PCB’s within or anything with flammability at working temperatures.
> Jerry Weiss
>> On Oct 26, 2015, at 9:27 AM, Paul Koning <paulkoning at comcast.net> wrote:
>>> On Oct 26, 2015, at 9:43 AM, Toby Thain <toby at telegraphics.com.au> wrote:
>>> On 2015-10-26 1:02 AM, Brian Archer wrote:
>>>> Even a 10W resistor will get really hot. I embed two 5W resistors into a
>>>> pentium class CPU cooler for a good compromise on space/thermal concerns.
>> My favorite low tech dummy load is the one my father came up with: a couple of resistors (carbon composite is best, carbon film or metal film will do), 1-2 watt size, in a jar filled with water. Works just fine for 100 watts or so, and is useable not just for power supplies but for HF transmitter testing.
The contents of this e-mail and any attachments are intended solely for the use of the named
addressee(s) and may contain confidential and/or privileged information. Any unauthorized use,
copying, disclosure, or distribution of the contents of this e-mail is strictly prohibited by
the sender and may be unlawful. If you are not the intended recipient, please notify the sender
immediately and delete this e-mail.
More information about the cctech