RCU Forums - View Single Post - Has anybody had problems using opto-isolators?
Old 02-15-2003, 10:39 PM
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mikuk
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Default Has anybody had problems using opto-isolators?

Hi Dick,
Like yourself I have used the smc opto with large petrol
models, never had any problems. When I first used one I checked
it out with a scope, the signal waveform transfers through the
opto with very little change on its way to the servo, I also set
up a noise source next to long servo leads and none got back
through the opto to the rx, thus its doing its job well, certainly
I have not suffered any problems with their use in many flights.
The only thing I will say is because you are using
two battery supplies you are doubling your fault liability, I have
gone away from the opto myself and just use toroid cores from
Multiplex on leads greater than 2ft (non active devices, non
existant component count=total reliability).
Would like to know the technical reasoning that JR
are using, the only difference I can see is that the current
load on all the channel outputs connected to the opto would be
constant, would have thought this would be a good thing???
Mike G