My major project over the last few months has been the construction of a small Tesla coil, having wanted to make one for many years now. My first experience was at a demo day at UNSW over a decade ago, and since then I`ve always had a bit of a fascination for them. Since moving back to Sydney from Holland, I`ve had plenty of spare time, so what be
Click here to download the full size of the above Circuit.
tter to do that to finally build the coil So finally I started researching coils and began planning. I gradually obtained all the parts I needed, thanks mostly to eBay, the local hardware stores, and much scrounging around local rubbish skips (these proved to be the most valuable!). Throughout April, I spent a massive amount of time working on the coil, and it became a near fulltime project. I wanted to make the coil portable, modular and scalable. The mechanical design I came up with allows the device to be (dis)assembled without tools and in about 3 minutes. Individual parts (eg NST, filter block, spark gap) can be removed in seconds thanks to spade connectors and dowel/hole supports. What came out of it all was a 6 inch coil, powered by a 900 watt NST and occasionally boosted to 1400 watts with a second smaller NST. Maximum spark length so far is 80cm (about 30 inches), which I anticipate can be doubled with further optimisation. Following is a detailed description of the coil. Power factor correction capacitor, bought from Jaycar (large motor start cap. Coilers have said that motor run caps are better, but these are big (10cmx5cm) and haven`t gotten warm yet. ) The baseboard and majority of the structure is made from laminated chipboard, conveniently scrounged from a couple of skips. All the wood was hand sawed, not having a power saw. This took a huge amount of time and energy! Edges were finished with iron-on...
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.....
characters left: