If you are hovering around 70 to 80 degrees Celsius, some would say that it is generally safe. While it is a little bit safe, it is already near the danger levels of overheating as going close to 90 degrees … Continue reading →

Both AC and DC give shock. Voltages above 50 volts (AC or DC) are considered unsafe. Under wet conditions, threshold voltage may be even less. Both AC and DC will give you a shock equally. Can DC voltage shock you? … Continue reading →

Closing a laptop computer’s lid shields the keyboard and screen from dust, debris, any liquids that might be spilled onto the keyboard and makes it easier to transport. Aside from that, leaving the lid open while the computer is powered … Continue reading →

The Best Ways to Charge Without a Charger Computer or Laptop USB Port. This is my “go-to” method for charging when I’m at my computer. Automobile. Portable Battery. USB Wall Outlet. Public Charging Stations. Hand Crank Generator. Solar Power. Wireless. … Continue reading →

DC motor is called that because it needs DC power input. So yes it can run from batteries, if their voltage and max current are right. Just connect it any way and you’ll see. The polarity can be connected in … Continue reading →

The disadvantages of half-wave rectifiers are: They only allow a half-cycle through per sinewave, and the other half-cycle is wasted. This leads to power loss. They produces a low output voltage. The output current we obtain is not purely DC, … Continue reading →

By observing the dc motor current waveform as digitized by the built-in ammeter of a high-performance power supply, you can determine the RPM of the motor by using markers to measure the motor current waveform. This dc motor has 12 … Continue reading →

If the multi-colored wire is black and red, the black wire is the negative wire, while the red one is positive. If both wires are black but one has a white stripe, the striped wire is negative, while the plain … Continue reading →

When your high-end computer is running slow, you should do a malware scan, declutter the computer’s storage, and stop temporary files. Other causes include a possible bottlenecked CPU, corrupted hard drive, and a loaded browser cache (especially Internet Explorer or … Continue reading →

You can absolutely run a desktop on on lithium ion cells at slightly above 12 volts. It’s not even that hard since most PSUs regulate to 12V then use simple ICs to regulate to 5V/3.3V. But it would require a … Continue reading →

Your pc is always grounded unless you isolate the contact from the plug, or plug a cable without grounding contact, which is sometimes helpfull in sound systems like rock concert, where if the electric amps are grounded can lead to … Continue reading →

Computer Power Supply Voltages 3.3 Volts is used to power the CPU. 12 Volts can also be applied to specific “smart” chassis fans. Power supply can convert to a 100 Volt electrical current to +12V, -12V, +5V, -5V, and +3.3 … Continue reading →

Originally Answered: How often should you replace a PC power supply? every 2–20 years depending on build quality and environment. If the fan’s turning and the computer isn’t crashing under load, the power supply is probably working. If you’re worried, … Continue reading →

What causes reversed voltage? Reverse voltage is a type of energy signal created when the polarity of an electrical current is reversed. Such voltage occurs often when the reversal of the polarity is applied across a diode, forcing the diode … Continue reading →

There are two types of home charging: level 1 charging and level 2 charging. Level 1 charging happens when you charge an electric vehicle (EV) using the charger included with the car. These chargers can be plugged with one end … Continue reading →