Dear all, I need a lowpass filter to turn an Arduino PWM output into a proper DC with MINIMUM ripple and drift. I have to control a photomultiplier-tube (PMT) via a 0-5V DC control voltage that generates the high voltage (HV) needed to drive the PMT. As the HV follows the 0-5V DC control voltage …

Active Lowpass Filter for PWM to DC to control a Photomultiplier

holmes4 February 15, 2013, 1:27pm 2

How about using a digital pot or a digital to analog converter.

Mark