Scope use...

From: Charles P. Hobbs <transit_at_lerctr.org>
Date: Sun Jul 23 14:38:52 2000

On Sun, 23 Jul 2000, Tony Duell wrote:

> > I have the Velleman (bought new about two years ago, because it looked
>
> Did you get it ready-built, or did you spend an enjoyable hour or so
> soldering up the kit like I did. It wasn't hard to put together...

I bought it ready-built.
>
> > Both work fine, although the Leader has trouble staying in sync (burnt out
> > valve maybe?)
>
> Most trigger problems are due to old germanium diodes that have failed.
> Must have replaced a good number in older 'scopes over the years...
>
There are a number of diodes in this scope (good thing it came w/ the
schematic, huh). Most of the ones in the sweep circuit are type
1S1588...and one 1S2076A. There are a few of both types in the
hor. and vert. amps as well.
Received on Sun Jul 23 2000 - 14:38:52 BST