[sdiy] Help with sawtooth convertor

[Oren Leavitt]

On 1/3/19 8:14 PM, Tim Ressel wrote:
> Hi,
>
> Once again my ignorance bites be. I have a triangle to saw convertor 
> that works very well:
>
> https://imgur.com/a/CutQtVC
>
> But the DG448 is smt (and  pricey) and I need a pth solution. The 
> DG448 is just shorting the op amp pin to ground. I have seen circuits 
> using npn transistors and stuff like 2N7000 but I cannot get that to 
> work. The signal at that spot is up to +/- 10 volts. Does anyone know 
> how to do this?
>
> Thanks!
>
>
I would think a standard n-channel JFET would work if given voltage 
levels on the gate.


- Oren