The 5 yuan proofing board is back

cruelfox

The 5 yuan proofing board is back [Copy link]

 

I was careless and the vias were not covered with oil, so the appearance is flawed

okhxyyo

Hahaha, you're quite interesting.

qwqwqw2088

The board is well made, but the vias are not covered with oil.

tianshuihu

Haha, this is a fan? !

lcofjp

Put some glue on it, and it will become a table tennis racket.

cruelfox

A simple experiment

cruelfox

lcofjp posted on 2019-5-1 09:53 After applying glue, it will become a table tennis racket

It is so small... Besides, the strength of PCB is not enough. It is better to saw a piece of wood yourself.

littleshrimp

Is it full of coils?

cruelfox

littleshrimp posted on 2019-5-1 11:34 Is it full of coils?

Yes, there are about 240 coils in total. I don't have an inductance meter, so I don't know how much inductance it has.

lcofjp

cruelfox posted on 2019-5-1 10:08 A simple experiment

It's amazing, strong

littleshrimp

cruelfox posted on 2019-5-1 12:08 Yes, the total number of turns is about 240. I don't have a meter to measure inductance, so I don't know how much inductance there is.

Can the LED light up if it is placed on a switching power supply without other circuits?

cruelfox

littleshrimp posted on 2019-5-1 19:01 Can the LED light up if it is placed on a switching power supply without any other circuit?

Yes, it is the alternating magnetic field energy collected by the coil.

ddllxxrr

Not bad, a bit mysterious taste

arm8686

The board is creative

liyiui

Are there any activities of Jiali Chuang?

zhuyebb

I strongly support the OP ing...

DavidZH

What is this?

兜兜12

What is the principle? Can it be open source? Otherwise, I can buy it.

334058462

大神，有電路圖嗎，我這也想弄一個，蟹蟹蟹蟹