WasteWaterTim
New Member
I understand the concept behind using MOV's (Metal Oxide Varistors) to surpress voltage spikes on a collapsing coil.
My problem is this, I need to know, specifically with AC relays at 120 VAC if a spike can be created when the relay is first fired depending on the part of the cycle the coil is first engergized in. e.g switched on right at the point of zero crossing of the AC line vs turning on at the peak.
Additionally, as the coil of an AC relay in essence charges and collapses 60 times a second, what keeps the coil from spiking with every cycle?
Help! I need to understand this in detail.
My problem is this, I need to know, specifically with AC relays at 120 VAC if a spike can be created when the relay is first fired depending on the part of the cycle the coil is first engergized in. e.g switched on right at the point of zero crossing of the AC line vs turning on at the peak.
Additionally, as the coil of an AC relay in essence charges and collapses 60 times a second, what keeps the coil from spiking with every cycle?
Help! I need to understand this in detail.