Tencent's mobile phones are always annoyed when they are out of power, so many people carry mobile power with them. What? Mobile power is also dead? ! Or honestly find an AC outlet and charge it together... Presumably we have encountered this situation and there is no good solution. Although solar mobile power may be an emergency, if you encounter cloudy fog, it may not be able to absorb energy for a long time. So, some people came up with other tricks: human power! Do not think that these people desperately fling the ball is crazy, in fact, they are generating electricity. Yes, this small ball called HandEnergy is just like its name: There is electricity with your hands! The principle is not too complicated: HandEnergy has a small magnetic rotor generator with a 5000RPM rotation speed, which transmits the mechanical power generated by the rotation to generate the current and then charges its own lithium battery. HandEnergy modeling mini cute, only 380 grams, 70.7 * 72.8 mm, built-in 1000mAh lithium battery, providing 5V1A voltage and current output. Although it is not a mobile power source with a large battery capacity, it can quickly provide power to mobile phones as an effective emergency solution. You may say: Should you charge your cell phone, do you want to throw your hand? Actually it doesn't have to be a hands-off. For example, if you run with HandEnergy, you can also make its internal magnetic rotor rotate. In addition, in order to increase the fun, it also has some small games to play and generate electricity while playing. What I am curious about is how efficiently the magnetic rotor rotates to convert electricity, but the HandEnergy page does not mention it, hoping it won't take a long time to generate a little bit of electricity, and that would lose its meaning. At present, HandEnergy is crowdfunding, early bird support has a 13% discount, the price is 69 euros (about 505 yuan), need to wait until May 2017 will begin shipping. Source: kickstarter Do you know what is ENEPIG in PCB?
7.Process costs substantially lower than electrolytic nickel gold or electroless nickel electroless gold
ENEPIG PCB,Aluminum PCB,Rigid PCB,Flexible PCB Storm Circuit Technology Ltd , https://www.stormpcb.com
What is ENEPIG?ENEPIG-Electroless Nickel Electroless Palladium Immersion Gold is a surface finish for Printed Circuit Boards.ENEPIG works well with lead free and conventional eutectic solder alloys.This is the best way for gold wire bonding. Advantages for ENEPIG:
1.[Black Nickel" free – no possibility of grain boundary corrosion of nickel surface by immersion gold
2.Palladium acts as an additional barrier layer to further reduce copper diffusion to surface, thus ensuring good solderability
3.Palladium completely dissolves into solder, without leaving an excessively high P% rich interface, exposing an oxide-free nickel surface allowing reliable formation of Ni/Sn intermetallic
5.Withstands multiple lead-free reflow soldering cycles
6.Demonstrates excellent gold wire bondability