Hi,
While I can manage my way around digital circuits, I am pretty lost in the world of a.c... I am using a 9v. relay to turn on a 240vac - 9vac transformer from a digital circuit, and thought I should protect the relay's contacts against arcing, so I put a .033 µF 240v capacitor across the contacts. But then the transformer was partially powered while the contacts were open, and I measured 360 volts ! across the capacitor. So I know I've got a lot wrong.
Do I need to protect the contacts for the few milli-amp inductive load? If so, how?
Many thanks for any suggestions.
MidAtlantian
While I can manage my way around digital circuits, I am pretty lost in the world of a.c... I am using a 9v. relay to turn on a 240vac - 9vac transformer from a digital circuit, and thought I should protect the relay's contacts against arcing, so I put a .033 µF 240v capacitor across the contacts. But then the transformer was partially powered while the contacts were open, and I measured 360 volts ! across the capacitor. So I know I've got a lot wrong.
Do I need to protect the contacts for the few milli-amp inductive load? If so, how?
Many thanks for any suggestions.
MidAtlantian