[sdiy] matching of diodes

[Sowa Roman]

if it says 'germanium', it's probably old schemo. Shottky diodes should
fit your needs too. I think they even make them dual, connected by one
lead, but that's even harder to find than solo shottkies

I'd measure matching like this:
Make a bridge - 2 diodes at the bottom, two equal (1% or better) resistors
at top, and put multimeter in the middle of the bridge. Cathodes to GND,
andodes to resistors, other sides of resistors to supply voltage. Multimeter
between two anodes.
If they're mathced, multimeter shows 0. If it shows 2-3mV, they are decent
and much better than you need for SAW/TRI rectifier

hope that helps
Roman

__-----Original Message-----
__From: Rob Mantel [mailto:rob at arachnoids.org]
__Sent: Monday, May 27, 2002 2:21 AM
__To: SynthDIYmailinglist
__Subject: [sdiy] matching of diodes
__
__
__Hi all,
__
__In this schematic I have here, in the part that converts a 
__saw to a triangle
__2 diodes are used for that purpose. It says it is best to use 
__2 matched
__germanium diodes for this purpose. Now my question is, I have 
__quite some
__AA118 and AA119 diodes here, but how exactly would I match 
__them? How do I
__select the best ones?
__
__Thanks,
__Rob
__
__
__
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