Yes you can, but some of the capacity will remain unused always. The max voltage of a fully charged 3.7v battery is 4.2v whereas is 4.35v for a 3.8v battery. Can I use a 3.7 v battery instead of 3.8 … Continue reading →

We often get asked “How do you reduce 24Vdc to 12Vdc” and the answer is pretty easy – you use a DC to DC converter which has a 24Vdc (nominal) input with a regulated 12Vdc output. How do you reduce … Continue reading →

Usually (usually), the red one is positive and the black one is negative. The positive should go to the internal pin and the negative to the external surface. Which part of a DC jack is positive? The center positive drawing … Continue reading →

ARGB or Addressable RGB uses 5volts to power themselves and have an address color processor connected to each led. 12v is not Addressable but follows what color is being displayed on the bus at the time. It’s LED architecture is … Continue reading →

The EIAJ standard associates voltage ratings to connector size, assigning larger connectors to higher voltage devices. So the yellow plastic (probably usually) just means that the plug you’re looking at has a specified suggested voltage range for operation, and you … Continue reading →

A window room air conditioner is not designed with a drain plug or drain hole that allows the unit to drain excess water while operating. Air conditioners have a “slinger ring” around the rear fan blade. The fan is designed … Continue reading →

Despite their names, both ‘DC generators’ (or ‘dynamos’) and ‘alternators’ initially produce alternating current. In a so-called ‘DC generator’, this AC current is generated in the rotating armature, and then converted to DC by the commutator and brushes. Does an … Continue reading →

It is not good practice to rely on a 6 volt relay to pull in on less than 5 volts. (There will be some voltage drop between the collector and emitter of the transistor.) Les. When the key was pressed … Continue reading →

High tolerance to system faults and overload. High tolerance to power factor and frequency deviations. Good line isolation. Relatively inexpensive. What are the advantages of regulators? In a nutshell the benefits of well-designed regulation include: Technical standards help to utilise … Continue reading →

Cordless drills are more powerful than they’ve ever been, yet they’ve also gotten so compact and lightweight that you can probably handle one even if you’ve never picked up a drill in your life. Is a corded drill more powerful … Continue reading →

“Every time a computer powers on, it has a small surge of power as everything spins up, and if you are turning it on multiple times a day, it can shorten the computer’s lifespan.” The risks are greater for older … Continue reading →

You *should* plug your PC into a surge protected outlet. To ensure the outlet has surge protection, I prefer to use a power strip or Uninterrupted Power Supply (UPS) that has this technology. The truth of the matter is that … Continue reading →

The electrical supply is the same in Australia and in Europe (including the UK): it is all 220 volts 50 Hz. All you need is a plug adaptor so you can use an Australian power point. Is EU plug same … Continue reading →

Though not designed for deep-cycle applications without the car’s engine running, a 450 watt-hour car starting battery should be able to safely power a portable DC 1.5-amp TV/DVD player for about 12 hours or a 31′′ flat screen for about … Continue reading →

Linear voltage regulators—also called LDOs or low-dropout linear regulators—use a transistor controlled by a negative-feedback circuit to produce a specified output voltage that remains stable despite variations in load current and input voltage. Why is it called linear regulator? Despite … Continue reading →