I am using a 555 timer to control the speed of a film recorder. The timer operates from 140 to 600 Hz. When enabled, (the + 5V command stays "high"), the timer needs to ramp up to its "set" frequency. When the start command is removed , I need the reverse condition-- The "set" frequency is ramped to "off". Otherwise it will tear the film. I can't find any suggestions for this. the original MAGNATECH control equipment is too elaborate; they count up and count down for synch, rows and rows of ICs- this is not required for my present application . I wanted something simple.
Maybe it's not possible with a handful of components.
Thanks for reading.. I have faith in you guys!
Maybe it's not possible with a handful of components.
Thanks for reading.. I have faith in you guys!