2camjohn
Member
I am running a battery powered pic based circuit that drives a coil.
I already have decoupling capacitors near the pic and the voltage regulator.
I want to improve reliabiltiy when the battery is running low by adding a capacitor that stores some charge for the coil.
How do I work out what value to choose for the capacitor?
I know the voltage into the coil and the resistance of the coil, aswel as the 'on time' for the coil.
Thanks
John
I already have decoupling capacitors near the pic and the voltage regulator.
I want to improve reliabiltiy when the battery is running low by adding a capacitor that stores some charge for the coil.
How do I work out what value to choose for the capacitor?
I know the voltage into the coil and the resistance of the coil, aswel as the 'on time' for the coil.
Thanks
John