reubenn
Junior Member level 1
reed carrying current
I'm working on a project and need the current through a wire to be switched off and on at a fast rate.
The wire will be carrying a constant current of 25 - 50 mA.
I'll be using a dry reed relay for this switching purpose (Is there a better option?)
What i need to know is :
1> What should be the rating of the reed relay ?
2> Is contact protection essential in this situation ?
3> If it is essential, how should it be done ? using a diode or a series RC snubber ?
4> In case i' m using a diode, is a single diode 1N4007 (general purpose rectifier diode) across the relay enough ? Or should I use some other diode ?
5> In case i'm using a RC snubber, can somebody please explain how it should it be done, or post a suitable link regarding the same.(i have searched, btw, and am LOST).
6> Also if possible, can someone explain or post a link regarding the working and connection of a reed relay.
I'm working on a project and need the current through a wire to be switched off and on at a fast rate.
The wire will be carrying a constant current of 25 - 50 mA.
I'll be using a dry reed relay for this switching purpose (Is there a better option?)
What i need to know is :
1> What should be the rating of the reed relay ?
2> Is contact protection essential in this situation ?
3> If it is essential, how should it be done ? using a diode or a series RC snubber ?
4> In case i' m using a diode, is a single diode 1N4007 (general purpose rectifier diode) across the relay enough ? Or should I use some other diode ?
5> In case i'm using a RC snubber, can somebody please explain how it should it be done, or post a suitable link regarding the same.(i have searched, btw, and am LOST).
6> Also if possible, can someone explain or post a link regarding the working and connection of a reed relay.