[sdiy] Differential Pair

[harry]

The 2SC1583 is a good cheap Diff pair as well...
Maybe $.80
I used it in the Chris MacDonald MiniModular... worked real well.

Of course the electronic temperature compensation is a real boon...

H^) harry

patchell wrote:

> Laurie Biddulph wrote:
>
> >    My synth VCO used a temperature compensated differential pair in
> > the form of the uA726 which appears to have gone in to the archives
> > alongside the dinosaurs (extinct). The MAT02 seems to be the first
> > replacement of choice here but has anyone looked at the LM194/LM394 or
> > are there any other alternatives to consider as well as selecting two
> > trannies from the drawer?
> >
> > Best Regards
> > (Mr) Laurie Biddulph
> > http://www.ozemail.com.au/~boobies
> >
> > Tel: +61 2 4340 1525
> > Fax: +61 2 4340 0936
>
>     The LM394 is also a good choice, as well as the MAT04...But, to tell
> you the truth, I have made quite a few measurements involving the CA3046
> (LM3046), and at about $0.50 each (at least here in the states), you are
> not going to find much more bang for the buck.  I have been getting
> about 1 to 2 cents log conformity over 8 octaves (using the compensation
> for the Rbe).  Plus, I have been using it with an electronic
> compensation, which means no heaters, and no temp compensating
> resistors, with good results (not perfect, but pretty dang close).
>
>     I am pleased enough with the CA3046 that I will not be ordering any
> more MAT04's, which are $7 each now (when I bought mine, they were $4
> each).
>
> --
>  -Jim
> ------------------------------------------------
> * Visit:http://www.silcom.com/~patchell/
> *-----------------------------------------------
> *I'm sure glad Merry Christmas comes just once a year
> * -Yogi Yorgensen
> ------------------------------------------------

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