polymer and electrolytic capacitors do have a maximum number of cycles and some shelf life as well. That's why it's a common fault on power supplies. Other than capacitance, they also have ESR which in some cases is very important. Both these attributes can cause the capacitor to malfunction. It is possible to acquire a new, never used, capacitor which is dry. In some cases the cap has been stored improperly and for too long, in other cases it's the physical damage or manufacturing/QC fault. It is rather rare though.
That's a great lesson.
thank you so much
Hi Raff do capacitors have a shelf life? I mean do they ever dry out when new?
polymer and electrolytic capacitors do have a maximum number of cycles and some shelf life as well. That's why it's a common fault on power supplies. Other than capacitance, they also have ESR which in some cases is very important. Both these attributes can cause the capacitor to malfunction.
It is possible to acquire a new, never used, capacitor which is dry. In some cases the cap has been stored improperly and for too long, in other cases it's the physical damage or manufacturing/QC fault. It is rather rare though.
@@blackhorserepairs wow thank you!