T
treez
Guest
I once worked for a company who made capacitor chargers. They were charging up 500V, 470uF Elec capacitors to 400V and discharging them once per second.
Whenever they had to do a production run, they had to time the ordering of the capacitors so that they were manufactured immediately before the production run. This seems a little odd. Are we seriously saying that any product that contains electrolytic capacitors has to have them made right before the production run?
I understand that leakage current is higher in old electrolytics, but after 10 minutes with voltage on it, this reduces right down, and modern capacitors have very low leakage even after years in storage.
So why is it that electrolytics have to be made right before the production run?....i mean, how would anyone know if a product was made with old or new electrolytics? So are we saying that a “3000hr 105degc” El capacitor is not that after say three years in storage? They are not date coded, and even if they were, you couldn’t see it once mounted amongst other components.
Whenever they had to do a production run, they had to time the ordering of the capacitors so that they were manufactured immediately before the production run. This seems a little odd. Are we seriously saying that any product that contains electrolytic capacitors has to have them made right before the production run?
I understand that leakage current is higher in old electrolytics, but after 10 minutes with voltage on it, this reduces right down, and modern capacitors have very low leakage even after years in storage.
So why is it that electrolytics have to be made right before the production run?....i mean, how would anyone know if a product was made with old or new electrolytics? So are we saying that a “3000hr 105degc” El capacitor is not that after say three years in storage? They are not date coded, and even if they were, you couldn’t see it once mounted amongst other components.