@gunrunnerjohn posted:Just because they've sold thousands doesn't mean there isn't a basic design flaw.
Lots of products have major flaws, yet massive quantities of them are shipped before the flaws surface.
The diode is a basic precaution running LED's on AC voltage, the reverse voltage rating of most LED's is around 5V peak. A 10 VAC source has a peak reverse voltage of 14 volts to the LED, almost three times it's rating.
Once again, though you should expect it, Stan is spot on with his analysis, they needed the diode.
Yep, unless these are REALLY high power diodes, the 1A diode is plenty.
As you have correctly noted this waould be a major design flaw. However this vendor has been successfully selling this product for many years. They are the major supplier of this product which is why you see them at York. It is not like they are a startup and released a new product. I run over 100 of their direct replacements on my layout with zero failures or degradation over many years.. That performance is not possible without addressing reverse voltage in the design.
