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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