Showing posts from October 23, 2016

Simple Tesla Coil

Hello! Today I’m going to show you how I build a Tesla coil! Probably you may know this device from computer games, movies or some “music tesla show” whatever they call it. If we ignore the mystique around the Tesla coils, it's just a high-voltage resonance transformer working without a core. So as not to get bored from theory let’s jump to practice. Step 1: Circuit There is a circuit of coil, as you can see it’s very simple and we need only few components. - power supply, 9-21V, also it’s gonna work from batteries with same voltagelittle heatsinkTransistor 13009 or 13007, or almost any NPN transistors with similar parametersvariable 50kohm resistor180Ohm resistorcooper winding wire 0.1-0.3mm, I used 0.19mm which is 36 American wire gauge, about 200 meters. Also we need a frame for secondary coil, it’s could be any dielectric cylinder diameter of approximately 5cm and length of 20cm. In my case it’s piece of 1-1/2 inch pvc pipe from home depot. Step 2: Coils

Geography of India - Social

Geography of India Longitudinal extent of India is 60 degree 32 minutes North Geography of IndiaContinentAsiaRegionSouth Asia
Indian subcontinentCoordinates21°N 78°EAreaRanked 7th • Total3,287,263 km2 (1,269,219 sq mi) • Land90.08% • Water9.92%Coastline7,516.6 km (4,670.6 mi)BordersTotal land borders:[1]
15,106.70 km (9,386.87 mi)
4,096.70 km (2,545.57 mi)
China (PRC):
3,488 km (2,167 mi)
2,910 km (1,808 mi)
1,751 km (1,088 mi)
1,643 km (1,021 mi)
699 km (434 mi)Highest pointKanchenjunga
8,598 m (28,209 ft)Lowest pointKuttanad
−2.2 m (−7.2 ft)Longest riverGanges
2,525 m (8,284 ft)Largest lakeWular Lake
30 to 260 km² (12 to 100 sq mi} India lies on the Indian Plate, the northern portion of the Indo-Australian Plate, whosecontinental crust forms the Indian subcontinent. The country is situated north of the equator between 8°4' to 37°6' north latitude and 68°7' to 97°25' east longitude.[2] It is the seventh-largest country in the world, with a t…