Lighting Which temperature is better

   The color temperature (CT) characterizes the composition of the light spectrum emitted by the source. CT is easier to assess at the level at which it perceives a person. If...

Power supply Express testing of battery capacity on Android

The battery of any phone sooner or later loses its original performance and wears out. And if the outdated phone models can hold for a long time ...

Power supply How to disassemble the battery from the laptop?

In childhood our curiosity was boundless. Hearing the ringing ticking of the desk clock, we wanted to know the source of its origin. Seeing the bright picture on the screen ...

Lighting Pulse ignition device with own hands

Electric motors Mixed capacitor coupling

Power supply How to charge a laptop from the phone

Electric motors Modes of operation of asynchronous machines

Power supply Main aspects of maintenance and operation of car batteries

Electric installation Small bar. Curved neck

Measuring Calibration of cold and hot water meters

Instruments European standards of electrical wiring, installation of sockets and switches

Electric installation Sample job seeker job summary: electrician

Lighting Kinds of light bulbs and the complexity of their choice