Right people! I own a couple of GENI Mojo spinmaster 1 DJ lights with a controller circuit that controlls motors and the bulb.
Long story short(ish), there is a relay on the board that controls the bulb. When the unit has reset motors to '0' after power-on, and it receives a signal from its internal mic, it flicks the relay to turn the bulb on and start the sequence. Now, the bulb is 24V 250W, therefore should draw 10.4A. The relay on the board is rated at 10A @ 28v. I was wondering why, because this seems to be pushing it verrry close to its limit, there's not a lot of headroom for even the slightest of surge.
I was replacing the ceramic bulb holder on one of my units. The new bulb holder actually had thinner wires and was smaller than the original holder (i didn't know this upon purchase). With the new holder attached and the unit powered on, when the relay flicked to power on the bulb the relay immediately blew.
This baffles me - i made 100% there were no shorts in the new holder or at the connections; also the new holder having thinner wires should mean LESS amps are drawn due to a higher resistance! Why would it blow?
If you have any feedback or comments whatsoever, please let me know, im completely confused with this one. Ill replace the relay and try again but still no sense. (Or im missing something obvious)
Board:
Relay:
Bulb + New and Old Holders
Long story short(ish), there is a relay on the board that controls the bulb. When the unit has reset motors to '0' after power-on, and it receives a signal from its internal mic, it flicks the relay to turn the bulb on and start the sequence. Now, the bulb is 24V 250W, therefore should draw 10.4A. The relay on the board is rated at 10A @ 28v. I was wondering why, because this seems to be pushing it verrry close to its limit, there's not a lot of headroom for even the slightest of surge.
I was replacing the ceramic bulb holder on one of my units. The new bulb holder actually had thinner wires and was smaller than the original holder (i didn't know this upon purchase). With the new holder attached and the unit powered on, when the relay flicked to power on the bulb the relay immediately blew.
This baffles me - i made 100% there were no shorts in the new holder or at the connections; also the new holder having thinner wires should mean LESS amps are drawn due to a higher resistance! Why would it blow?
If you have any feedback or comments whatsoever, please let me know, im completely confused with this one. Ill replace the relay and try again but still no sense. (Or im missing something obvious)
Board:
Relay:
Bulb + New and Old Holders
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