One would wonder just how the four corner valves maybe the most used and stressed items in the valve block never need changing. Maybe they are made from Land rover super rubber.
I've got a cheque book made of the same stuff Tony.
The words I used were insignificant effect.So we have now progresses from no slowing effect whatsoever to a marginal slowing effect?
The armature will certainly bounce at both ends of travel, that is why the pick pulse is so long although air pressure must have some damping effect, on the close the action will also be cushioned to some extent by 60psi of air pressure.while we are on the topic of complicating things, what about the bounce effects of the rubber end on the plunger, and the natural oscillations of the spring when it reaches the maximum position as the plunger closes ?
Pete
I agree on the first part - the effect maybe marginal, even to the point where it's negligible, but still there nonetheless. But on your second point (highlighted): The reverse voltage spike, typical of electro magnets and inductors and the reason why these devices very often are suppressed by an R/C network or a reverse diode, is primarily caused by the collapse of the energised field, not by the movement of an armature within the coil. EMF still occurs in inductors with no moving parts. I agree that the movement of the armature will generate some sort of voltage in the coil, but the high-voltage spike which occurs just as power to the coil is cut, is the result of a collapsing magnetic field.
Correct, but the point was the effect on the armature.
The point in question was soft closing due to electronic effects, doing it pressurised would have merely confused the issue, I proved what I already new, namely that there is no armature release delay or slowing when the power is removed.
