With the surge of electronics that has continued since: personal computers, cell phones, smart TVs, electric cars, and a whole lot more, DC is back with a vengeance and being used everywhere. A short side note about sending power over … Continue reading →

Common devices that can use 12V USB adapters include: Cellphones. Tablets. GPS units. FM broadcasters. Bluetooth hands-free devices. What devices use 12 volts? Most small DC appliances are made for 12 volt power. Many are also available for 24 volt, … Continue reading →

Once the electrodes hit their target, the Taser sends a pulse with about 50,000 volts and a few milliamps. On its standard setting, the pulse cycles for five seconds before shutting off. How many volts is a police taser? 50,000 … Continue reading →

“Typically, anywhere up to 70 degrees Celsius [158 degrees Fahrenheit] is okay, but if it gets hotter, you might start having problems,” says Silverman. Your CPU and GPU will usually start throttling themselves between 90 and 105 degrees Celsius (that’s … Continue reading →

Some laptops and other devices include polarity protection, which is essentially a fuse that burns out if you use the wrong polarity. If this happens, you might hear a pop and see smoke. But the device may still work on … Continue reading →

The reason for the large size of Apple branded memory is the manufacturing technology. The fact is that they are based on a conductor such as silicon. Why are Apple chargers so large? The size of the charger always matches … Continue reading →

How do you change the direction of a DC motor? So in order to change the direction of rotation, we can simply reverse the voltage, causing the current to flow in the opposite direction, changing the force by 180 degrees … Continue reading →

If you use a 15 volt charger on a 12 volt battery it will work no matter what type of battery it is. But charging will be very fast, the battery will get hot, depending on the type it could … Continue reading →

Inverters are not a standard feature in every RV. They can be a useful tool for the average RVer, though, and might be worth purchasing should you find yourself disconnected from shore power often. Do you need an inverter in … Continue reading →

With these batteries, you can power 16-volt components (ignition and starter, for example) from one post and 12-volt accessories from the other. Can you run 12V on 18V battery? 18V would be risky, I would not try to plug a … Continue reading →

Most likely, your cell phone charger has a USB Type A connection, too. Unfortunately, while you can use Type A to power smart devices, you can’t use it to power your laptop. Can a USB-C phone charger charge a laptop? … Continue reading →

7 methods. Whenever we need to use this interface we must modify or implement all 7 methods. So when we use the Adapter class (in other words WindowAdapter) we don’t need to modify all the methods, since all the methods … Continue reading →

A USB port is a standard cable connection interface for personal computers and consumer electronics devices. USB stands for Universal Serial Bus, an industry standard for short-distance digital data communications. USB ports allow USB devices to be connected to each … Continue reading →

LEDs are typically wired in parallel, just like almost every other light on the planet (you are describing a series circuit). 3V LED + suitable resistor = 5V at somewhere around 20-50mA each. Put as many in parallel as your … Continue reading →

If the current output of the 3.3V source is less than the LED’s maximum, then it is safe. If you need a resistor you select your desired current which must be equal to or less than the LED’s maximum current. … Continue reading →