Reading time: 2 minute The xenon lamp is also part of the category of gas discharge lamps. In this case, the peculiarity is that the gas that emits light is maintained in a small volume (a few cm3) and at a very high pressure (about 30 atmospheres).
Month: September 2021
What are the advantages and disadvantages of the fluorescent tube?
Reading time: 2 minute The fluorescent tube is a device in the category of those with gas discharge (electricity is transformed into light by means of a gas). It consists of a glass tube in which the air has been replaced with mercury vapor.
What does the largest microSD card look like and what capacity does it have?
Reading time: 2 minute The largest available microSD card has a storage capacity of 1 TB and uses UHS-I technology. MicroSD cards, such as Sandisk and Lexar, are known not only for their high card storage capacity, but also for their high read and write speeds.
How to choose and how to use electrical cables and extension cords correctly?
Reading time: 3 minute Why not choose the cheapest cable? | What are the consequences of choosing the wrong cable? | Oversized connection elements
What are the advantages and disadvantages of the halogen bulb?
Reading time: 2 minute The halogen bulb is also an incandescent bulb, the only difference from it being the fact that the inside of the glass globe is not vacuumed, but filled with an inert gas (chemically stable).
What are the advantages and disadvantages of the incandescent bulb?
Reading time: <1 minut The incandescent bulb consists of a filament (very thin wire) enclosed in a vacuum glass vessel (from which, to avoid "oxidation" of the filament, air was removed). When I apply an electrical voltage to the ends of the filament, it heats up until it becomes incandescent (emits light).
What is the primary coil and what is the secondary coil on a transformer?
Reading time: 2 minute The presented article refers to the grid transformers with sheet metal core. The vast majority of such transformers are of the "descending" type, ie they have a coil connected to 220V (which is why it is called the primary coil) and output lower voltages in all other coils (called secondary coils).
How to build an intercom without a microphone?
Reading time: 2 minute The DIY project in the article presents the scheme of a simple intercom made with the LM386 integrated circuit. The two 8-ohm speakers are used as microphones at the same time.
What are liquid metal batteries and how do they work? (VIDEO)
Reading time: 3 minute The Liquid-Metal battery has two liquid metals inside: Calcium and Antimony (antimony), and the generation of energy is done at a few hundred degrees. However, due to the insulation, the manufacturer says that it is "cold" on the outside.
How do we build a miniature FM transmitter?
Reading time: <1 minut The DIY project presented is a mini FM transmitter, easy to build. The installation is ideal for surveillance of a room, surveillance of children, with a range of up to 400m.