Littlediode is no more. The only other ebay seller has been caught
re-branding and selling used as new. I have been looking at pico amp
reverse cxurrent diodes that are still being sold and have not founds
any that favorably compare with the DPAD1. The DPAD1 is only being sold
by one source as far as my research has gone today. It is Linear
Systems/micross. They are a bit dear at $4.35US each but could be used
to upgrade the 7081's performance a small amount. I was ordering them
last night and all was going well until they overcharged ($20US) for UPS
ground. It's hard to trust a company that does that!
David, I want to thank you for your 7081 information on your web site.
I used the troubles you had with your 7081 repair as a starting point
for my first repair and it saved me a lot of time.
Nigel, thanks for letting me know aboutlittlediode and your experience
with them.
Charlie
On 10/31/2014 4:30 AM, Nigel Clarke via volt-nuts wrote:
I bought from Little Diode around 10 years ago, a variety of RF
transistors similar to and including 2N3866 with the specific intention of
comparing
them for suitability in LF/HF active antennas.
However all the devices they supplied looked to have been rebranded from
the same generic stock, I'd had some experience of this in the past but it
still took a LOT of effort before I finally got past the evasive responses
and they admitted this was true, which of course made any comparison pretty
pointless.
They didn't refer to them as "generic", can't remember what expression they
did use now in their initial responses but remember it wasn't something
I'd come across before, but there were certainly no indications at the point
of sale that these weren't original manufacturer's branded stock.
Such rebranding and subterfuge was common amongst some at least of the
aftermarket electronic valve suppliers in the late 1960s, a bog standard device
going in one door could come out another as the ruggedised version, for
example, and much more expensive, and it would seem similar practices lived
on.
I wouldn't touch them again with the proverbial barge pole, although I have
to accept others may have had better experience.
Regards
Nigel
GM8PZR
In a message dated 31/10/2014 10:49:12 GMT Standard Time,
david.partri...@perdrix.co.uk writes:
I might be worth asking eBay vendor LittleDiode, they are the eBay shop
for LittleDiode Components ...
Regards,
David Partridge
-----Original Message-----
From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of Charles
Black
Sent: 31 October 2014 00:09
To: volt-nuts@febo.com
Subject: [volt-nuts] Solartron 7081 With Bad WR057 Diode
My Solartron 7081 has a bad WR057 diode that needs to be replaced. It's a
three terminal device that looks like two silicon diodes in parallel.
It was making the meter read about 10.1V with a 10V input. Luckily it was
temperature sensitive and was easy to find with freeze mist. Removal caused
a shorted input to be about 2.5 microvolts high and a little noisy. I've
not been able to find this device on the internet but thought that someone
here might have seen this thing before.
Charlie
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