_neoRAGE_

Hi, I was wondering if anyone knows how i can go about making a DC iris control circuit, assuming i can provide (for example) 0-3.3V as an input which causes the iris to go from 0%-100% open? I note that many of the lenses supporting DC/Auto-iris have a 4 pin connector with signals DRIVE+, DRIVE-, BRAKE+, BRAKE-; how do i drive these? I tried finding information online but i was shocked to see there was none there! The lens i am trying to drive is a Computar HG2Z0414FC-MP. Any help would be really really appreciated _neoRAGE_

Oh i see, so does someone have an idea of how i could drive this baby which has both Drive and Damp coils? Please help... _neoRAGE_

Hmm...i still don't fully understand the function of the dampling/ brake/control coil - is it an output or am i suppose to drive that somehow? thanks in advance. _neoRAGE_