sqealing inverter

Hi Ken,

Install thicker cables from the battery to the inverter and this will stop it. Had the same problem some time ago. Better still go over the top and make them really thick.

You did not say what size inverter. If it is say 1500 watt then look at something about the same thickness as the starter motor to the earth on the vehicle.

No doubt someone will be more technical than me.

Has it got a cooling fan?

Thanks for reply Carl & Obee 1212
My mistake its a 300 watt Powertech from Jaycar the wire is AWG 10
It also has a fan which spins freely by hand.Actually thats what I was hoping it would be

Cheers Ken


Mi Missis Me Mad Dog n Me

Does it have any overload or under voltage alarm? If not then it may well be time for a caretaker.

But first lets see if I can find the specs and be sure about alarms etc.

Maybe Google can give me the specs and I can look further. But don't hold your breath. It's just asmall one and for my money it won't have any alarms.

What's the part/model number?

Phil

The symptons you describe is typical of an inverter that is either overloaded or has a faullty output stage, eg a faulty transistor driver or possibly the capacitors in the unit have dried out and it has become unstable.

This sort of event will no doubt become the norm with invertors and DC / DC chargers etc after a few years as they age.

It is quite a common occurence in all types of electronic equipment that utilises switched mode power supplies as the capacitors don't like heat. Most manufacturers use low temperature types to save a few cents, though even high temperature rated devices will eventually fail.

Cars are a very hostile enviroment for electronics, high heat, humidity and vibration, best to keep it as simple as you can.

Cheers

leighW

Mine, a 500w pure sine wave unit at home, was quite happy during the day as it was charging a couple of batteries from a spare solar panel. At night, (whilst we were away), running a few lights for some sort of security lighting, battery voltage dropped and the squeal of the Low Volt alarm woke the neighbour two doors down. Not Happy. Neighbour directly next door was also away, so he didn't care, pity about his daughter in law who was house sitting. Luckily we had a friend of the parole officer, warden, sheriff or more commonly known as SWMBO, was checking the house frequently and got bailed up by neighbour 2 doors down. A few quick calls via the mobile and all sorted, inverter turned off - no more high pitched squeal. Neighbours got back to sleep.

but when we got home.......

good luck, hope it not busted


cheers - bb

Hi Ken

Correct decision.

Where do we send the flowers.

Phil