I have a coil of relay (with 25ohm coil resistance) that consumes 5V in order to changes the Common leg's state.
Most of the time the circuit is open and 5V doesnt fall on coil but on a switch (i have a protection diode in paralel to relay).
So the circut is simple, 5V, coil, diode, and a switch that separates between coil and ground.
I was adviced by an engineer to connect a capacitor in paralel with to the 5V, so when i close the cicruit (by pushing the switch), the coil will receive a rush of current.
How come the capacitor gives a rush of current? what does it mean a rush of current, as opposed to the current that would flow if there was no capacitor?
And why does coil need a rush of current?
Thanks in advance.
Most of the time the circuit is open and 5V doesnt fall on coil but on a switch (i have a protection diode in paralel to relay).
So the circut is simple, 5V, coil, diode, and a switch that separates between coil and ground.
I was adviced by an engineer to connect a capacitor in paralel with to the 5V, so when i close the cicruit (by pushing the switch), the coil will receive a rush of current.
How come the capacitor gives a rush of current? what does it mean a rush of current, as opposed to the current that would flow if there was no capacitor?
And why does coil need a rush of current?
Thanks in advance.
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