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
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Why does my laptop charger have 3 wires?
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
How do you know what cable is black and red on a black charger?
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
What do I do with my old ADT equipment?
When we spoke with an agent from ADT, they said that once the contract is up, they will not take their equipment back—so you can either leave it in the Read more
What happens if the polarity of the voltage to a DC motor is reversed?
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
How do you get something through a metal detector?
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
What do you do if you spill nail polish remover on your laptop?
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
How do I fix the distorted color on my TV?
Fixing Color distortion issues on your TV First, go to your TV’s settings menu and desaturate its color settings until it gets to black and white. Next, ensure all wires Read more
How do you cut a glass tube without a glass cutter?
What is the easiest way to cut a glass tube? Hold the glass tubing one hand. Hold your tungsten carbide knife in a vertical position with other hand. Place the Read more
Can I connect two power supplies together?
In general, yes you can parallel two supplies. How well this works depends on how well they end up sharing the load current. This depends largely on a good match Read more