Thread: wiper motor help please

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on my wiper motor im using a wall warts to power it. It does good for about 10 min. then the wall wart it very hot and it stops working. I dont have a pc supply to use. what do i need to use for continuous run? thanks

Originally Posted by spookman

on my wiper motor im using a wall warts to power it. It does good for about 10 min. then the wall wart it very hot and it stops working. I dont have a pc supply to use. what do i need to use for continuous run? thanks

A bigger wall wart. Whats the specs on the one you're using? Voltage and amps/current? It will be on the wart itself, something like output 5V/800mA...

My bet is you're using a severly underpowered one and it's overheating as it cant handle the load.

Agreed. I've been able to get away with using a 1.2A supply but only for intermittent use. I use 3.7A or 5A warts for continuous running. This wart will handle a wiper motor.

ive used three so far none like the one otaku posted. the specs on this one is ac input 120v ac 60 hz max 0.15a ac output 9v 1000ma thanks for the replys

Originally Posted by spookman

ive used three so far none like the one otaku posted. the specs on this one is ac input 120v ac 60 hz max 0.15a ac output 9v 1000ma thanks for the replys

Yep, there's the problem. A 1A supply won't handle the motor for very long before the thermal protection shuts it down.

You need at a minimum a 2amp/2000mA (1mA = 1/1000th amp) brick to power a wiper motor. And ideally 12v tho that's not as important.

3-4amp is even better to be safe.

I'm surprised the .15a wart didn't catch fire. Seriously.

I think the 0.15A is the input current draw. The output looks to be 9VDC, 1A.

Next question along the same lines; what is the easiest way to connect a wall wart to a wiper motor? Is there a way to do it without cutting away the housing and soldering it? Thanks!

Kinda depends on the motor. If it's a Monster Guts motor, it's easy - get the quick connect accessory from MG. If it's generic motor you can use a DC power socket from someplace like Radio Shack and solder wires and spade connectors to it, many motors use this type of connector. Be sure to match the size of the socket to the plug on the wart.

Originally Posted by Otaku

I think the 0.15A is the input current draw. The output looks to be 9VDC, 1A.

Aah - I read it on my iphone, I thought he was listing specs of different warts that were tried.

Even still, 1 amp output is barely enough to power it without a load.