> Zeners are not very good- you can make an almost perfect op-amp clamp.
>
> Best regards,
>
> Spehro Pefhany --"it's the network..."            "The

Thanks for the Spehro, I suspected an op-amp circuit would be the way to go
but strangely my op-amp circuit book didn't include anything suitable and I
couldn't work out one that would work :) I just found a load on google
though... Thanks for the lead,

Ben

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