How to make a Simple Electric Current Indicator
A Simple Electric Current Indicator made of LED, Ferrite Bead, Enamel wire. You can get Ferrite beads from USB cable, Junk TV, Junk printer. Turns ratio is 120:5 @ 60Hz …
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Tag: Indicator
Electric current indicator 2
Materials : Cosmetic sample bottle, Little Neodymium magnet. Neodymium magnet is vibrating when electric current more than 10A. (AC 60Hz)
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Electric current indicator 3
Electric current indicator made of transformer bobbin + LED + ferrite core. This is same mechanism as current transformer. You can light up LED for free using your electric appliances.
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Coin & Styrofoam ball electrostatic indicator (동전과 스티로폼공을 이용한 정전기 감지기)
Coin & Styrofoam ball(conductive ink painted) electrostatic indicator. This is Franklin’s Bell experiment. Conductive ink used in this video is carbon ink. 동전과 스티로폼 공을 이용한 정전기 감지장치 입니다. 공이 …
Occupancy Indicator Light circuit
This is USB powered Occupancy Indicator Light circuit sample. Also usable door open indicator, valve indicator, drawer indicator.. etc.. Materials : Reed switch, Two 4.7k ohm resistors, 1k ohm resistor, …
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Samsung Galaxy S5 Heart Attack Indicator
I decided to see whether the Heart Rate Monitor/Sensor would still work after the Samsung Galaxy S5 was burned in fire for about 20 seconds. FACEBOOK: TWITTER: INSTAGRAM: TechRax
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Rubidium, Water and Indicator (slow motion) – Periodic Table of Videos
We drop Rubidium into water – but with Phenolphthalein in the water to act as an indicator. Discussed by Professor Martyn Poliakoff. More chemistry at us on at And on …
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Get a Subtle & Colorful Battery Indicator on Android [How-To]
How to Add a Battery Indicator to the Top of Any Screen Full Tutorial: Subscribe to Gadget Hacks: In this video, I’ll be showing you a cool little app …
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Add a ‘Headphones Connected’ Indicator to Android’s Status Bar [How-To]
How to Get a Headset Status Bar Icon on Stock Android Full Tutorial: Subscribe to Gadget Hacks: In this video, I’ll be showing you a cool little Xposed module …
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Using LEDs as mains indicator lights on 120V and 230V (live demos)
Modern LEDs are bright enough at low current to use as directly mains powered indicators with minimal circuitry. The slight downside is that with a simple resistor circuit the vast …
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