matching diodes

[Rene Schmitz]

At 19:32 09.12.99 -0500, Rob wrote:
>So, can diodes be matched with a good meter?  I want to build a ring
>modulator..
>I would perhaps *think* that this is possible on either the ohm setting or
>the diode setting
>
>Rob

Hi Rob!

Hook it up to a current source, and measure the forward drop. As an
approximation for a current source a large resistor (100k) can be used. 
This is what most diode settings in DVM do anyway, but you don't know at
what current. At best you should choose the current at which you measure to
be close to the current in the actual circuit. 

Bye
 René

opinionsexpressedher   | uzs159 at uni-bonn.de
einarethatofmyemploy   | http://www.uni-bonn.de/~uzs159
erandnotofmyself....   | http://members.xoom.com/Rene_Schmitz