Showing posts from 2016

FM Bugger Circuit

FM Bugger Circuit
Here’s a great project from<ahref="">EEWEb</a>.
Author : Charlene Tessa Descallar.
Editor : S. Sai Jayanth /LearntoDiscover.
The project circuit design is a FM Bugger circuit. It works like a the same frequency to be able to transmit and receive information in the same channel. The FM bugger circuit is originally designed to be used like a spy gadget to eavesdrop other people’s conversations. Though it is designed that way, it is pretty much useful as a transmitter or transmitter that transmits and projects information signals into the air wherein a FM radio will act as a receiver which would receive the transmitted signal. The circuit and the FM radio must be tuned-in with as a walkie-talkie to relay messages in a distance. {image3} PROJECT DESCRIPTION
The FM bugger circuit is designed to be used as a spy gadget that would monitor a person through his conversations. Though it is il…

How to Make a Homemade Water Filter

How to Make a Homemade Water Filter Alas, not everyone is knowledgeable even with the basics ofhow to filter water (we’re looking at you, kids)for drinks, let alone the concept ofa homemade water filtration system. It is quite important for anyone to learn how to make a water filterespecially for emergency situations. To help you out, here’s a guide on how to build a water filter.The following are five of the easiest homemade water filterbuilds: 1. Bio-Filter Things you will need: Gravel, sand, activated charcoal / activated carbon, five (5) food-gradefive-gallon buckets, screen, plastic plumbing fittings, hole saw Bio-filter, as a homemade filter, is composed of three separate layers of gravel, sand, and activated charcoal. It is a streamlined method of filtering impurities in the water starting from the biggest up to the most minuteimpurities in the water. Here's How To Do It: 1. Turn the water gallon container upside down. 2. Cut a hole at the top of the container. This is whe…

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…