Quote:
Originally Posted by oab_au
Phil you can't have a Duty cycle of 0% or 100%, or it is not a Duty cycle it is DC. It is usually quoted as 5% to 95%.
Harvey.
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A very low duty cycle can in fact result in a virtual fully open or closed valve depending on configuration, without the signal appearing as absolute D.C. The solenoid armature and valve components have weight, and friction also exists, both affecting electrical efficiency. Therefore a time constant is involved in respect of the onset of reciprocal movement.