VC LFO question

[Berenger Enselme]

Dear DIYer's,

We were trying to replace the rate knob on the MS404 LFO with a CV-input
circuit... So what we did was : we replaced the pot by a LM13600-based
voltage controlled resistor (the schematic of which is in the NS LM13600
datasheet). It more or less works, we can control the rate with a CV, but
the LFO used to output a triangle signal, and here we are with a sawtooth
!! Can anyone help us ? 

By the way, I have the schematic to this great LFO, would anyone be
interested to put it on his site ?

Thanks !

Beru 
<benselme at imaginet.fr>