[sdiy] CA3086 and CA3046?

[René Schmitz]

At 08:52 16.08.01 +0100, you wrote:
>I'm making a VCO using the CA3086 at the moment.
>Should I use the two transistors to the left of the chip which already
>share a common emitter?

Yes, that way you can put in a 3046 later and have the transistors matched.

>Also, Farnell Electonics supplier here in the UK has discontinued the
>range of 1K Tempco resistors but they will supply a 1K Thermistor
>(code 679331) in its place which I am going to try to use. Anyone any
>thoughts or things to add?

I don't know that part, but thermistor sounds like negative temperature
coefficient. If so then you will need to put it in the upper leg of the
voltage divider. (An example of how to do that is on my homepage -> click
"whats that exp and tempco stuff".)

Cheers,
 René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159