When I turn on the power inverter (Jensen 160 watt) it makes a sound that varies between two tones, and then blows the fuse in my car. It worked fine previously. The fuse on the inverter is still intact.
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it could have a fault and thats why it's blowing the fuse, inverters can wear out and the parts may need replacing the capacitors the voltage regulator chips all these parts have to be taken into account, this parts don't last for ever they need replacing. capacitors can last upwards of 12000 hours but electric jolt and what you are use to be powered adds more drain on the electronics most inverters you can get at most 5 years out of them but it really depends on what you use on them, and if you useing it to its max or near max all the time it will wear out, then blow fuse
A 1000W can barely supply 5A at 220V, less than 10A at 110V. So if a 40A fuse blows, there is a serious problem and you should not attempt to use this unit after it has been checked by a qualified person. Please be careful!
Hi Gena, the inverter is a 400 watt unit. This is not a rating for a continuous load. You do not mention which fuse is blowing. This could be the fuse in the inverter or the cigarette lighter (power source) fuse. In either case, a fuse blowing could be a short circuit, something in the inverter shorted, or too much load. I am going to look at the too much load side of things. Not knowing how many laptops are being used, with the inverter if you have a 20 amp fuse in the cig lighter, this will allow you 20 amps X 12 volts = 240 watts. I would not run the inverter over 240 watts because of overheating issues. So, 240 watts will run 3 laptops. Just the laptops. Most laptops draw around 70 watts. check your power supplies on them to find their rating. If you exceed the 240 watts by combining the ratings, then you can expect trouble with your inverter. It will give 400 watts, but this is a temporary condition only. Another inverter will be needed or a larger one installed and it being connected directly to the battery (with a fuse of sufficient size installed). You could also (let us say there are 6 computers) charge and run 3, and the other 3 are running on their batteries. After an hour, switch so that the 3 running on batteries now are charging as well as running. The other 3 are now charging.
I hope this helps. If you have any other questions please provide additional information. Such as the size and location of the fuse blowing. The laptop power supply ratings.
sounds to me like there is a dead short somewhere in the system, I would take it to an electrical appliance repair shop and they can fix it. If there are none in your town then look on the internet for one in your state so you won't have to send it very far to get it fixed.
Your laptop PS has big condensers in the input. Even supplied by mains through 6A quick fuse or automatic breaker it will drop first time, but may hold the second. Your inverter may be has fast fuse 2 - 5 A. If not so fast it may carry the initial load.
Hint: If you are not "both left handed" you can connect 20 - 200 Ohm (2 - 10 W) resistor in series to your Laptop Power Supply. After the initial start of the inverter you can shorten the resistor by a 3 - 5 A switch.
60 amps times12 volts = 720 watts times 80% effic of conv. = 576 watts available for microwave...
You must have a very tiny microwave as most require at least 1000 watts input power. That might have something to do with blowing the fuse. Since the microwave has a very reactive inout, you need a goodly safety margin above the rated watts input.
Hey, Question: Is the 2400 watt the peak rating or the continuous rating of the unit, and what is your power source for the inverter. If 2400 is the peak, the 1200 is probably the continuous. Your 75 watt fridge will draw probably 150-170 watts to start up, which will load the inverter to draw 15-17 amps of load on your 12 volt power source. If the battery supply is weak, the current draw at startup will cause the voltage to drop and set off the alarm. Getting the start up out of order may work for a while, but will eventually blow the internal fuses on the inverter, or possibly blow out the capacitors. Check the condition of the battery supply, and make sure the bar fridge is in good working order to resolve this problem.