What is electric current and how does it arise. Conditions for the flow of electric current in metals, semiconductors, gas and liquid. A simple explanation of the concept.
Found an external battery for laptops. He gives out 3A at 19V. And on my laptop it says 19V, 4.74A. Will the laptop even turn on from this battery?
Is it possible to identify the manufacturer by marking the wire (or in some other way)? Thank!
Which automatic machine, magnetic starter and thermal relay for an 11 kW induction motor?
I connected the VVGNG cable, yellow-green and armor are not connected. With a call, it turned out that on the armor there are 40-50 Volts, and on PE about 70 Volts. This is normal?
I want to put an RCD on 2 machines, the load on them will be a maximum of 5 kW. What should I choose an RCD by power and which machines to put? Do you need RCD protection or not?
Hello, how many computers (system units + monitor) can be connected to 1 outlet? Power supplies 550w, ordinary prefabricated house, built in 1994.
Overview of the new Wolkinz Cosmo robot vacuum cleaner. Characteristics and functionality of the model. Pros and cons of Wolkinz Cosmo.
Hello! What to choose an introductory machine for the garage, in which copper wiring, cable cross-section of 2.5 mm.kv.?
Is there such a device in nature when crossing, say, a conditional line, the light would be ignited and also turn off? I would like to create a so-called barrier.