A resistor has the ability to reduce voltage and current when used in a circuit. The main function of a resistor is to limit current flow. Ohm’s law tells us that an increase in a resistors value will see a … Continue reading →

LEDs/length When buying LED strip lights, it is important to look at the number of LEDs per length. For brighter output and higher light quality, you should look for the strip lights that have the highest number of LEDs per … Continue reading →

Standard red, green, and yellow LEDs have forward voltages in the range 1.4V to 2.6V, depending on the desired brightness and the choice of forward current. For forward currents below 10mA, the forward voltage varies only a few hundreds of … Continue reading →

For some iPhones, it could take up to 10 minutes or less to turn on. However, most iPhones usually take up to 15 minutes or even more to turn on if the battery is completely drained, according to How-To Geek. … Continue reading →

Can I connect cable to my PC? To connect it to your computer, plug one end of an Ethernet cable into the Ethernet or LAN port on the back of your modem, then plug the other end into the Ethernet … Continue reading →

Can a laptop last 10 years? Yes, absolutely. If you take good care of a laptop, it could last for more than 10 years. Usually the first thing that gives out is the battery, which you can usually replace or … Continue reading →

DC power is significantly more energy efficient than AC power. DC motors and appliances have higher efficiency and power to size characteristics. DC-based lighting (LED) is as much as 75% more efficient than incandescent lighting. Is AC or DC better … Continue reading →

Can I Drill With an Impact Driver? If you’re drilling holes at 1/4-inch or under, you’ll be able to drill through brick and some concrete with an impact driver. Impact drivers have a freakish amount of torque, but they are … Continue reading →

Wrap electrical tape around them as tightly as you can — the stretchiness of this kind of tape really helps. Take another piece or two and continue to wrap tightly along the cable, all the way past the matchsticks. Is … Continue reading →

USB-C is an industry-standard connector for transmitting both data and power on a single cable. The USB-C connector was developed by the USB Implementers Forum (USB-IF), the group of companies that has developed, certified, and shepherded the USB standard over … Continue reading →

To determine whether an upgrade is worth your money, look at how much it will cost, and compare that to the computer’s age. “If the computer is seven years old or more, and it requires a repair that is more … Continue reading →

Motor RPM Calculation Examples (Hz x 60 x 2) / number of poles = no-load RPM. (60 x 60 x 2) / 4. 7,200 / 4 = 1,800 RPM. What is the RPM of a 12 volt DC motor? DC … Continue reading →

What Does “12V” Mean? 12V tells us that the battery supplies 12 volts under a nominal load. The same principle holds for a 24V battery bank in that it provides 24 volts. As we discussed before, most car and RV … Continue reading →

Series wound DC motors are best for applications that require high startup torque, without the need for speed regulation. Like a shunt motor, as a load is applied to a DC series motor, the motor speed decreases, which reduces the … Continue reading →

They will if it’s under warranty, and there’s a defect. They won’t if you broke it or allowed it to be damaged accidentally. You should have asked the technician for the price of repairs; that’s usually the first question, right … Continue reading →