Stupid question Andy. How do you get the -10v from this circuit? On 2013/07/12 06:54 PM, andy pugh wrote: > On 12 July 2013 17:41, propcoder <[email protected]> wrote: >> Maybe someone knows where to find tested and working schematics? > http://tom-itx.dyndns.org:81/~webpage/cnc/ACPL-P480_opto_sch.png > > (It needs to be a totem-pole or push/pull opto, or it can charge the > cap, but not discharge it, and the result is non-linear). > The clue to the component is in the title, but not mentioned on the > diagram. It's an ACPL P480 > http://www.farnell.com/datasheets/611920.pdf > >> I found schematics of PWM to analog converter which uses two digital >> optocouplers. > That was mine too. The one above is simpler and almost certainly better. >
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