bigal_scorpio
Active Member
Hi to all,
I need to make a safety switch for my newly made 12" disc sander.
Most workshop machines now come with a switch that kills the supply if there is no power to the machine, like after a power outage. As I have just built the sander I thought I would incorporate this feature but I just discovered that ALL my relays are at most 24v dc coils.
My relays are fine for carrying the voltage and current needed on their contacts its just the problem of tham needing low dc voltage for the coils.
Is there an accepted way of using a low coil voltage relay to switch mains AC in this type of setup?
I am looking for a simple design if possible, hopefully not requiring a separate transformer but I have never made this type of switch before so I don't know all the implications.
I have various push button switches that are suitable for either AC or DC at mains voltage, its just the coil voltage problem I need to address. Any suggestions guys?
Thanks Al
I need to make a safety switch for my newly made 12" disc sander.
Most workshop machines now come with a switch that kills the supply if there is no power to the machine, like after a power outage. As I have just built the sander I thought I would incorporate this feature but I just discovered that ALL my relays are at most 24v dc coils.
My relays are fine for carrying the voltage and current needed on their contacts its just the problem of tham needing low dc voltage for the coils.
Is there an accepted way of using a low coil voltage relay to switch mains AC in this type of setup?
I am looking for a simple design if possible, hopefully not requiring a separate transformer but I have never made this type of switch before so I don't know all the implications.
I have various push button switches that are suitable for either AC or DC at mains voltage, its just the coil voltage problem I need to address. Any suggestions guys?
Thanks Al