Category: Electronics

Shutdown your computer and turn the UPS off. Wait 10 seconds and turn the UPS back on. This should reset the unit. Will UPS switch on without battery? Yes. The Read more

Some CD discs allow you to write data and then erase the data to reuse the disc. These types of discs are identified as CD-RW or DVD-RW discs. The data Read more

If you can’t find your DVD player or Blu-ray player remote control, or it has stopped working, don’t despair. You can often still play media using buttons on the device Read more

A Metal Box Any electrically conductive metal will reflect and absorb the device’s incoming and outgoing signals and interfere with its operation. Wrapping a GPS tracker in aluminum foil is Read more

What is reverse polarity? Simply put, it’s when the hot wire and neutral wire have been swapped. This can be caused by improper wiring of a pedestal, or if an Read more

There is two reasons. Remote voltage sense as tony suggests. And because some of these chargers are actually both barrel and center pin, making them have 3 conductors. The third Read more

Each battery has two metal terminals. One is marked positive (+), the other negative (-). There are also positive and negative cables in the jumper cable set. The red one Read more

Of course, the direction of current is controlled by the polarity of the voltage. So in order to change the direction of rotation, we can simply reverse the voltage, causing Read more

With a metal detector, there is no need to touch the entrant. Simply have them walk through the detector, or wand them with a handheld detector, and you have the Read more

Allow a suitable time for the remover to dry (or evaporate) and then reconnect the battery and turn on the laptop and try the keys once or twice only to Read more