12 singers, six cardioid mics: Two singers around each cardioid microphone at a distance of 30 cm and at an angle of 45°. We lose 17 dB of the choir output when using one microphone per two singers as opposed to one per singer. Most of this is due to the increased distance from th...
The Maglev track allows the train to float above the track through the use of repelling magnets. Learn about the Maglev track and see a diagram of a Magelev track. HowStuffWorks The magnetized coil running along the track, called a guideway, repels the large magnets on the train's underc...
This magnetic field attracts a ferromagnetic projectile down the barrel. Since the projectile of a coilgun floats in the barrel and never touches the coils, it suffers less wear and tear, and these guns are completely quiet. Coil guns have been demonstrated to supersonic velocities, but they ...
Fitting the blades to the alternator. Erection on site at CAT. Waiting for wind which never came. The machine was then dismantled and will be shipped to Nicaragua for a village electrification project. This was the decision of the group who built it. Down at the local pub in in Cynws. ...
HOW TO MAKE a PORTABLE WIND TURBINE: Generally when I want to get away from the city and camp, I take some kind of power source with me. Within my preferences are the Power Banks. With a small and light one, of approximately 40 Watt hours (Wh), I can cha
They essentially operate as the reverse of a loudspeaker, using a diaphragm, voice coil, and magnet to turn a sound wave into an audio signal. A condenser mic with a cardioid or super-cardioid polar pattern is the microphone most often used for choir applications. Cardioid or super-cardioid ...
It is a mixture of gently pulling and teasing/sliding the coils together. See picture below. Once the coil of leader/backing is tight around the fly line you can start to exert more pressure by pulling on both ends of the knot to tighten it, but be careful, even at this stage the ...
Some examples include megger tests, high-potential (hi-pot) tests, and surge testing — which finds weaknesses in turn-to-turn, coil-to-coil, and phase-to-phase insulation that can lead to electrical failure. Industry Standards for Electric Motor Testing In every application in which electric ...
A relay is a simple electromechanical switch made up of an electromagnet and a set of contacts. Relays are found hidden in all sorts of devices. In fact, some of the first computers ever built used relays to implement Boolean gates. In this article, we will look at how relays wor...
It helps the functioning of the coils and avoids any exterior coil damage as the condensing coils are the part of the cellar that get warm when the compressor is on. It is also a good idea to wipe down the walls and possibly the floor of your cellar at that same time if there is ...