Under normal circumstances, all power supplies (including those with an on and off switch) and their fans turn on due to a signal they receive from the motherboard. Therefore, unless your power supply connects to a working motherboard that sends … Continue reading →

However, where AC adapters and other AC/DC converters are concerned, although efficiency has improved quite a bit through widespread use of switching methods, the efficiency of nearly all products still languishes at 80 to 90% or so. What are the … Continue reading →

How do I know if I have an Arduino Mini Pro 5V or 3.3 V? Choose “Arduino Pro/Mini” with 5v/16MHz board and upload sketch. If you see that the blinking is correct (10 sec ON/10sec OFF) – you have 5V/16MHz … Continue reading →

Random restarts can also be due to bad RAM, bad motherboards, overheating CPUs and GPUs. You will need to sub the GPU and PSU out to confirm what’s really causing it. Do try something simple first though – try using … Continue reading →

Ethernet cables look similar to phone cables. Ethernet cables have double the amount of wires to a phone cable (8 vs 4). The connector is slightly bigger than a phone cable’s connector. At the end of each cable is a … Continue reading →

Place the battery in the charger overnight to allow for a full charge on each individual cell (A minimum of 8 hours at room temperature). How long does it take for a 12 volt Dewalt battery to charge? 20V-12v, Lithium … Continue reading →

How do I test a DC power supply? Testing your power supply Plug your power supply into an AC outlet. Red probe goes into the tip. Turn on your multimeter and set it to read DC voltage. Take the red … Continue reading →

A drill with a brushless motor adjusts its speed, torque, and power supply to match the task at hand. It’ll sense if you’re driving screws into a light material like drywall or a dense material like mahogany, and use only … Continue reading →

voltage divider is one of the solution to change 5V to 2V! If you design in the transistor level, you need 2 transistors act like active resistor! How do you reduce 5V to 1.2 V? If the current is variable, … Continue reading →

Firstly, follow the steps below to attempt a fix for the issue: Navigate to your router login page. Log in to your router using the required credentials. Navigate to the UPnP menu on your router. Ensure UPnP is enabled. Disable … Continue reading →

Zinc-carbon 4.5V battery is commonly labeled as 3R12 battery and is used as a cheaper alternative to the alkaline 3LR12 battery, especially for low drain devices. What size is a 4.5 volt battery? DANTONA INDUSTRIES Battery, 4.5 V, Alkaline, 800 … Continue reading →

A battery charger, or recharger, is a device that stores energy in a battery by running an electric current through it. The charging protocol (how much voltage or current for how long, and what to do when charging is complete) … Continue reading →

But, as the bulb is rated for 120V. It means it will give appropriate(/desired) light intensity when connected to 120V supply. When we will connect it across 12V. Then it will not glow as much it should(brightness will decrease a … Continue reading →

Televisions can get their content wirelessly, but there is one set of wires they still need: those in their power cord. The consumer electronics industry has floated ideas for freeing TVs from their power cords, but this goal remains elusive. … Continue reading →

Your 12v adapter would only be able to raise the battery voltage to 12v, but to charge a car battery fully you would need to raise the voltage to 13.8v. The 16v adapter would raise the voltage too high and … Continue reading →