Very interesting Larry. I posted your website URL on a local ham
discussion forum. Your kit look very nicely built.
Excellent.
Le 05-10-21 à 12:49, Larry Phipps a écrit :
I have developed a new project kit that should be of interest to
Elecrafters. It is an inexpensive, accurate digital dummy load/
wattmeter. It is patterned after the concept of the mini modules in
that it is board based with no cabinet, although it does come with
an aluminum base plate to avoid the chance of accidental shorts.
Size-wise, it will fit in an EC-1 or similar case if someone wanted
to do a custom installation.
It is microprocessor controlled, temperature compensated, and has a
large backlit LCD display with multiple calibration screens.
Accurate calibration requires only a DVM. It is rated at 20W, and
uses metal oxide resistors, but there will be a 120W option which
will use thick film power resistors mounted in a watertight cast
aluminum case filled with cooling oil. I am still running tests on
this option. The larger dummy load will replace the bottom plate
when the 120W version is purchased.
I am posting this announcement because I want to determine the
level of interest before setting final pricing, based on parts
volume. Please email me off-list with "pre-orders" to help me
determine volume. I am also interested in any comments on the
design that could be incorporated before production boards are
ordered.
For pics, specs and other details, see my website at
www.telepostinc.com, and click on the LP-200 link. Target price is
$100, and I should be ready to ship 20W units in about 2 weeks. I
should have a final decision on the 120W option at about that time
as well.
Thanks and 73,
Larry N8LP
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