However, if you don’t calibrate your battery regularly, you may eventually find your laptop suddenly dying on you when you’re using it—without any prior warnings. When this happens, it’s definitely time to calibrate the battery. Some modern devices may not … Continue reading →

Check the Power Module If the components look fine, you’ll need to power up the circuit board. Measure the voltage of the power rails with the multimeter. Both the input and output of the voltage regulator need to show the … Continue reading →

A three prong plug is designed so that electricity can be safely supplied to electrical appliances. The third prong grounds the electricity to protect anyone who uses the metal-encased appliance from electric shock. Why do some plugs have 3 prongs? … Continue reading →

The computer will run just fine until you hit a peak current which exceeds the limit on one of your 12 volt rails and then the machine turns off like you’ve just pulled the plug. Below is a list of … Continue reading →

Switching operations include ON-OFF, MOMENTARY-OFF, ON-ON, ON-OFF-ON, and MOMENTARY-OFF-MOMENTARY. These toggle switches are quality built and can switch up to 20 amps of current at 12 volts DC or 120 volts AC. How many amps can a rocker switch hold? … Continue reading →

We sometimes use 24V battery systems in larger trucks and busses due to the vehicle’s higher power needs and long cable runs. You can also see 24V used in larger boats and some RVs with elaborate solar systems. Another typical … Continue reading →

Voltage surges can have a destructive effect on electronic equipment, including LED light bulbs. LEDs often require a certain amount of volts, depending on the type and color of the LED. Most experts recommend 2-3 volts for LEDs. However, you … Continue reading →

Split the four into two pairs. Connect each pair to each other, positive to positive, negative to negative. Connect one pair to the other pair by linking one positive terminal to a negative terminal on the other pair. the ‘other’ … Continue reading →

Start the engine and read the screen on the tachometer. While holding the tachometer, ask a friend to get into the vehicle and turn the key in the ignition. Once the engine starts, the tachometer will begin displaying the number … Continue reading →

600 million rpm. In 2013, scientists at the University of St. Andrews made headlines by propelling a tiny sphere to a record-breaking 600 million rpm (revolutions per minute). This new object out-spins that by a factor of 100. What is … Continue reading →

Thus, the speed of a DC motor can be controlled in three ways: By varying the supply voltage. By varying the flux, and by varying the current through the field winding. By varying the armature voltage, and by varying the … Continue reading →

If you’re technically inclined and don’t mind getting your hands dirty, you can retrofit almost any bike with a hub motor or mid-drive system. Choose the motor, method of pedal assist, and battery size to fit your needs with aftermarket … Continue reading →

Color filters work the same way, absorbing certain wavelengths of color and transmitting the other wavelengths. A yellow color filter will let through only yellow and absorb all other colors. Which colors are being absorbed by the filter? If you … Continue reading →

Leica has introduced new and updated cameras and lenses across its widening range of formats, including two medium format S cameras, a new M-mount film camera, V-Lux, D-Lux, and X-series compact camera updates, and several new lenses for M cameras … Continue reading →

An anti-aliasing filter is effectively a low-pass filter that is placed on the input of an analog-digital converter (ADC). In theory, any type of active low-pass filter with unity gain can be used as an anti-aliasing filter. What is aliasing … Continue reading →