# Electronics - Others - Page 3 - Recent Questions, Troubleshooting & Support

Not at all, pls check this one: Amazon com MASKELENA Solar Charger Solar Power Bank 12000mAh External... No more than \$30

Electronics -... | Answered on Oct 22, 2018

It has an internal failure. Either bad solder or a bad chip. This is not a user repairable device. Your best bet at this point is a data recovery service.

SanDisk Cruzer... | Answered on Oct 21, 2018

Some things to clarify:
Is the battery a 12volt or 24volt? I will assume a 12volt.
You should always have a fuse between the battery and the inverter. The fuse rating and wiring between the battery and your inverter depend upon the size of the load you will hook up to your inverter.
Inverters are usually NOT 100% efficient. Typically they are 80-90% efficient. If you run an inverter at rated load (your case 3000watts), you will most likely damage the inverter. If you run the 3000watt rated inverter at 500watts or less, you will have significant internal losses.
The capacity of the battery is important.
The type of battery is important (Flooded, Gel or GSM).
A 12volt battery is usually fully charged at 14 volts, but as it discharges, the voltage will drop. Batteries should not be operated at less than 11volts and most likely be damaged permanently if allowed to go below 10.5volts.
If a battery is rated at 100 amp/hours, that means it can supply 100 amps of current at 12volts for 1 hour, or 50 amps for 2 hours or 10 amps for 10 hours.
Now for the more important part. Assume your inverter is 80% efficient. 3000 x .8 = 2400. So the maximum load your inverter can safely handle is 2400watts. At 120volts you will be drawing about 20 amps of current at full load.
If you are going to draw full load, your battery must be able to supply the current to that inverter at an equivalent power rating (power out + power loss = power in). Therefore, 3000watts ÷ 12volts = 250 amps. If your load is only 1000watts (80%), load plus loss will be 1250watts, and therefore, the battery will need to supply 1250 ÷ 12volts = 104 amps. Why is this important? Because the wire between the battery and the inverter must be capable of carrying that current. And that becomes even more important, because if the wire carrying that current is undersized, it could start a fire. Also, with Direct Current, there is more of a loss than with Alternating Current. So if your battery is 20 feet from your inverter, it will incur twice the loss if it was only 10 feet away. You may have to use some very large gauge wire to satisfy the requirements.

Inverter... | Answered on Oct 21, 2018

Find the exact model number and do a search for that and manual in google. Follow the instructions in the manual.

Electronics -... | Answered on Oct 20, 2018

I am not sure what inverter you are using as Solax makes many. Here is a link to their manual downloads: http://www.solaxpower.com/en/downloads-2/ . I suspect that you may have to reset the system, and maybe recalibrate things. The manual I looked at did not mention any meter fault per se, but that doesn't mean that it doesn't exist.

Look at your manual and go to the troubleshooting section.

Inverter... | Answered on Oct 18, 2018

It looks to me that the Power Grid is not connected to the inverter. Some inverters are intended to feed the grid, and if that is not detected, it will not produce power. If you want an inverter to work as an AC power source when the grid fails, then what you have purchased is the incorrect unit.

Solar... | Answered on Oct 18, 2018

the computer is not seeing it properly un plug,then refit ,are the contacts clean,

PNY 4GB USB 2.0... | Answered on Oct 13, 2018

Why generators do not generate electricity

1. Fault phenomenon

When the generator set speed reaches the rated speed, the AC exciter stator excitation circuit switch is closed and the voltage regulator is adjusted to the maximum value when the generator speed reaches the rated speed.

2. failure cause
The generator core remanence disappears or is too weak, the newly installed unit is disturbed by long-distance transportation or the generator is placed for too long, the generator core remanence disappears or the remanence inductance is weak, which results in the generator remanence voltage vanishing or less than the normal remanence voltage value. That is, the remanence voltage is less than 10 V, and the remanent phase voltage is less than 6 V. Because of the stator, rotor and AC exciter stator of synchronous generator, the core of rotor is usually made of 1mm-thick silicon steel sheet, which is subjected to vibration after excitation, and the remanence magnetic field is easy to disappear or weaken.

Honda Eu2000i... | Answered on Oct 12, 2018

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