The rating on a relay is usally its optimum so try hooking up the 12V and see if its enough. I know that some solid state 24V relays will activage at as low as 3V.wkhchris said:hi
I would like to made a relay tester using 12v battery to test the relay is in function or not
As a result I need a dc to dc converter ic .Is it possible to help??Is there any IC chip available as a converter
I have just looked up a 115vDC coil relay (typical 8-pin industrial type), its datasheet says it has a 10kOhm coil so I reckon it will take around 110v/10k = 11mAmechie said:Are you sure the relay coil requires 55w (0.5A) ?
This must be a BIG relay !
Are you sure this isn't the switching capacity of the contacts?
A 110vDC coil isn't common outside industry but I know they exist - closer to a single watt though.
Make sure you are looking at the coil rating, not the contact rating.