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Bored of joking with capacitors? Then its time for you to maneuver on to super-capacitors. These have huge storage capabilities. during this article you may conclude the way to build atiny low LED flashlight using supercapacitors. The most disadvantage of capacitors is their giant voltage drop. For this project, a minimum voltage of two volts is needed to light-weight the LED. As a result, the “Joule Thief” style would be incorporated here. Using this, a AA battery is used to light-weight an LED until it's fully discharged.  during this case, a supercapacitor would be taking the place of the battery. Here an LED is employed to perform the operate of a diode. This ensures that there's sufficient voltage across the LED.  the necessities of the project are listed below: White LED Super capacitor (10F, 2.7 V) Transistor Torus 1 k ohm resistor Wires Breadboard The torus and therefore the transistor used here comes from an energy-saving lamp HS. Care ought to be taken whereas removi...

LIE DETECTOR-1 This circuit detects the resistance between your fingers to provide an oscillation. The detection-points can detect resistances as high as 300k and because the resistance decreases, the frequency increases. Separate the 2 bit pads and fasten them to the back of every hand. because the subject feels nervous, he can sweat and alter the frequency of the circuit.The photos show the circuit engineered on computer boards with separate bit pads. LIE DETECTOR-2 This circuit detects the resistance between your fingers to turn on the FALSE LED. The circuit sits with the TRUE LED illuminated. The 47k pot is adjusted to permit the LEDs to change state when touching the probes.  LIE DETECTOR-3 This circuit detects the resistance between your fingers to show the four LEDs. As you press tougher, more LEDs are illuminated. LIE DETECTOR-4 his circuit detects the resistance between your fingers to show the 3LEDs. As you press harder, a lot of LEDs are illuminated. Thecircuit is less c...