Just curious if anyone has made a circuit to shut the fan off when the unit is just sitting idle. I'm thinking about make one with a microprocessor that would monitor the temperature of the internals of the welder and then from basic computations with ambient air shutoff the fan and cooler so I don't have to listen to it and so it's not wasting power. with just the welder switched on with no load and the cooler on I'm pulling 1.6 amps. It may not sound like a lot but over time that idle power draw adds up. I figure I can use a hall effect sensor to sense when the power kicks on to start the fan and then keep it on until the desired temp is reached. So just curious if anyone else has attempted this yet.