Last week I built a DUSG and matched the transistors using the method
described in Electronotes #39, p. 6. It's much simpler than Ian
Frijtz's method, which I tried first. I had trouble getting enough
resolution on my measurement, only two digits of precision. With the EN
approach, I got three digits.
Richard Brewster
http://pugix.com
described in Electronotes #39, p. 6. It's much simpler than Ian
Frijtz's method, which I tried first. I had trouble getting enough
resolution on my measurement, only two digits of precision. With the EN
approach, I got three digits.
Richard Brewster
http://pugix.com
On 12/19/12 10:00 PM, adematteo wrote:
> Hi guys,
> I recently built up the vca3 boards and didn't realize until after the fact that it's recommended to match the bc548's.
>
> The fact that it's mentioned on Kens page makes me wonder if i should pull them and match them (ie. how critical is this ?) ?
>
> Which leads to my second question what are we measuring and how are we doing it ?
>
> I planned on building up Ian Frijtz's Transistor matching circuit for the dual transistors on this and the vco boards so would i be able to use this circuit to match the bc548's as well ?
>
> Thanks for any insight you guys can offer,
> -Tony
>
>
[Non-text portions of this message have been removed]