Reluctance motor. Which type of motors are used in toys? PMDC or Permanent Magnet DC motor is used in toys. What is a toy motor? Many of us could have come across this Hobby DC motors through kids toys such … Continue reading →

Can you convert 120V light fixture to 12V? Last thing to do, no matter when you converted the wiring, is to swap out your incandescent 120V (or LED equivalent) light bulb to a 12V bulb. Voila! Now any beautiful light … Continue reading →

No, strictly NO ! Any good charger has both current (for deep discharged condition) and voltage( at the end of charging) limits set inside. Therefore obvious that 24v system can’t charge 12 v battery. Any battery has manufacturer s recommended … Continue reading →

For safety purpose, the phone neutral socket will have caps. Only if the pin enters socket the other two sockets will open. It will be difficult to connect two-pin in such sockets. To solve this problem in mobile charges three-pin … Continue reading →

It might be a connection problem between the battery and the adapter. Whenever your laptop tries to charge the battery, the battery is not going charged, and your laptop thinks there is no battery and it is simply running on … Continue reading →

What is required from regulated power supply? A regulated power supply converts unregulated AC (Alternating Current) to a constant DC (Direct Current).A regulated DC power supply is also known as a linear power supply, it is an embedded circuit and … 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 →

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 →

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 →

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 →

“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 →

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 →

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 →

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 →

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 →