the human body DC resistance is about 1..2MΩ but depending of moisture and oiliness it may come down to 3kΩ and go up to above 10MΩ

Electricityexplore with your class - Explorify

It would also help to provide an actual schematic. The drawing you have doesn't even indicate which pins are what on the two transistors. Don't make people assume or guess. Also, we have no idea what the circuit board is going, so it's going be very hard to tell you how to get things to do what you want. Is the board needed for the thing to work at all, or can the LED light up if the board is removed and the output wires tied directly to the battery? My theory behind what I think the operation should be is that when there is a very slight flow of current through the circuit (of children holding hands) it is sufficient to turn the 2N2222 BJT on and then the LED. Using just one BJT wasn't sufficient so I made a Darlington Pair to increase the current gain. My thinking is that the 2N2222 BJT won't stand 0.66A current which I want through the High Powered LED so the next best thing in my toolbox is the Mosfet.and NE coordinates the 200km error allowed? (i will attempt to scan the anomalies at the area ... the success would be quite unlikely but ńot impossible ) Hold hands with friends to extend the fun and make a bigger circuit! As soon as someone drops hands and breaks the circle, the lights and buzzing will stop.

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the way the device is used likely gives it reasonable cooling time ... but maybe not ... or if it's left on a conductive surface https://components101.com/modules/xl6009-dc-dc-step-down-voltage-regulator-module ( outp 5 - 35V (adjustable) ) Again, linking this to other everyday examples (e.g. switching on the classroom lights, turning on the TV etc.) will help to strengthen their understanding.SHOP NOW The benefits of natural Essential Oils have been known for 6000 years. We bring you these benefits on the go. Anywhere. Anytime. For a better you.

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I have a tiny Al heatsink I can use for the LED but it will be enclosed in a pretty small space so I imagine it will only help for a few moments. I will try a human-touch thermal monitor prior to installing everything in the tube and then hope for the best. A brilliant way to show an electric current flowing - when you complete the circuit this little tube of light starts flashing and buzzing. Curly coiland Battery bonanzawill help introduce children to the different components within a circuit. Inside out, Electrifying metalsand Interesting insulatorsare good for starting a discussion about which materials are good conductors and good insulators. for the led to have high power (through the step up converter) the Li cell needs to provide even more power why the high light-power LED (it's dangerous to watch these close by) . . . ? for a "distant" class presentationsay 1mm² : (200·π·17mm²) · (150-20)°C -- if the thermal resistance from case to ambient would be "0" SHOP NOW Sense of smell is our most powerful sense. Studies have shown that inhaling the aroma from various Essential Oils can stimulate an area of your brain called the limbic system, this is where emotions, behaviours, sense of smell, long term memory, heart rate & breathing are all controlled. THE BENEFITS OF NATURAL ESSENTIAL OILS HAVE BEEN KNOWN FOR 6000 YEARS. WE BRING YOU THESE BENEFITS ON THE GO. ANYWHERE, ANYTIME. RESULTING IN A BETTER YOU! THE UNIQUE BLEND OF 100% NATURAL ESSENTIAL OILS HAS BEEN CAREFULLY SELECTED FOR PURITY & PERFORMANCE.