Dear People, I hope no-one minds me posting another question so soon after my one = about serial comms and 628 but anyway. I am using a 16f84 to act as = a 4 channel Digital to Analog converter using PWM. It seems to work OK = but what I really need to do is scale it so that it is 0 to 10v rather = than 0 to 5. This is just a signal voltage so very little load. =20 Appreciate any comments. Regards, Lee. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.