FW: Texas Instruments IC's

[Harry Bissell]

I've tried the Siliconix VN1206 for reset duty. Had to use two in series (go
figure...)
Think it has to do with the body diode. This was on a TomG VCO4, so I also
moddied the pullup on the comparator to +12 volts (was 6V). Did not work as
well as MPF-102 !
But more experiments could be needed...

H^)  harry


Tony Clark wrote:

> > Speaking of ECG, these folks (ECG and NTE) can be a nifty resource. I was
> > looking for a suitable FET for a VCO. The NTE466 has some decent specs
> > and seems to work okay. And I didnt have to wait for the UPS guy; I got
> > instant gratification, which is soooo important!
>
>    I've used the 466 for some time in my VCO projects and they are pretty
> good.  My biggest problem with them tends to be that they often don't
> reset the VCO all the way to zero (varies from one to the next) unless you
> drive them pretty hard.  That and they tend to be _really_ too expensive
> (okay, so I am a _little_ cheap) for my liking for not working as well as
> other types of FETs.
>    My next VCO run will most likely switch to BS170 which has much better
> specs than the 466 but requires opposite gate control and is only $0.45
> each.  Probably an even better type would be an MPF6660 which has lower
> on resistance and faster switching time, but I haven't played with it, yet!
>    Of course there's always MOSFETs...maybe someone has a direct drop in
> replacement for a 466?  I'd love to know!
>
>    Tony
>
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> I can't drive (my Moog) 55!         |     The E-Music DIY Archive
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