Reply to "New Thread (From Mtg itad) & Isolated Rail Detection Discussion"

barnunOGR Forum Member

@stan2004 posted:
.... your existing optoisolators are purchased modules that you did NOT "design" it yourself?

Stan, that is correct.
@gunrunnerjohn posted:
The value of the smoothing cap on the output side is dependent on the load on the opto output, I'm assuming 60hz as the input voltage.
GRJ, 60hz is correct. On the output side the Arduino should not sink more than 20mA at 5VDC.
Gentlemen, as always thanks for your input. Filing this away for the moment. Since I have 5 of the original boards with the bridge rectifier, 330uF cap and the optoisolator design on the way I thought I would wait until they get here, assemble a prototype and do some testing. Based on those findings I will look at designing a board with either the LTV-824 or the ACPL-214-500E chips and more appropriately sized capacitors and resistors.
Thanks again,
Barry

12/2/213:28 PM

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