Is it (when operated through a spark gap) allways a quarter wave, or a half wave or multiple of a whole wave so that there are 2* n maximums that are achieved. Can someone point out to sources that are related to creating standing waves and the resonance frequency of the coils. On the secondary is only a load put on. What I wanted to say was that if it is a Tesla coil configuration and you want the
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points of max excitations on the ends of the coil(tesla coil) the excitation f and the speed of the propagation of impuses c determines the lenght of the coil. The no of turns is not important, the lenght is. The impulse travels from the beginning of the coil - wire and back. So the higher the f the shorter a coil. A Tesla secondary should use a length of wire that is equal to a quarter-wavelength of the excitation frequency. The number of turns comes into play when deciding whether to use a short-fat form, or a tall-skinny form. Substantial energy can be stored in inter-turn capacitance. In a short fat coil, there is more voltage difference between adjacent windings than there is in a tall skinny coil. Short fat coils work better for maximum power transfer between primary and secondary. Tall skinny coils work better for transmitting power across space, as in this small Tesla power plant. This power plant is drawing only a few Watts (35 or so here) from the mains, and yet it will light up as many fluorescent bulbs as you can hold near it. Turn up the power (by opening the gap, bottom right, now nearly completely closed) and the range increases proportionally.
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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