The circuit diagram drawn on the paper can make the LED light shine.

Recently the Internet has forwarded a set of high amounts of pictures, friends pen on paper drawing of a circuit diagram, connect one end led lights on the other end attached to a button on the battery, he said, just hold down the button battery led light bulbs It will shine miraculously. is this real?

Since the netizen used the silver pen to draw the circuit diagram, the program group prepared the two most common silver pens on the market: the silver gel pen and the silver marker pen. Button batteries and LED lights were also prepared.

First, draw a simple circuit diagram on the black paper with a silver gel pen. The positive and negative poles each pull out a line, put the LED light on, connect the battery, and find that the light is not bright. The circuit diagram is not conductive. The experiment failed. The second test was then carried out with a silver marker and the same circuit diagram was drawn. After the connection, the lamp was still not lit. Experiments have shown that the circuit diagrams drawn by two ordinary silver pens are not conductive. Some netizens said that the brush in the experiment was indeed silver, but it was actually a special silver pen.


Next, according to the netizen, the program group conducted the third experiment, the same circuit diagram, the same LED lights and button batteries, even after the lights are on! Under the same conditions, the circuit diagram of ordinary silver strokes does not respond, and the special silver pen can indeed illuminate the LED lights. Since the LED brightness is too small, experimental upgrade again, the LED lamp into the lamp with a large, and with the corresponding button cell, then bright blue lights, successful experiment.


In fact, this mystery is on a special silver pen. It is called a silver gel pen. It is a needle tube. It is made of conductive silver glue. It is a gel made of silver powder. Silver is very conductive, so use this pen to draw The line can be electrically conductive.
LED Business Network led to focus on e-commerce platform to promote led enterprises to the Internet, the official website URL: http://


SMT Cable ,original and new, in stock, top quality.

Smt Machine Spare Parts

Original Smt Feeder

Original Smt Cable

Smt Machine Cable

Smt Spare Parts Fuji Cable

Smt Cable

Smt Belt

Smt Siemens Belt

Smt Juki Belt

Smt Conveyor Belt

Smt Camera

Smt Laser

Camera For Smt

Smt Siemens Camera

Smt Parts Plastic Rail

Smt Plastic Rail

Smt Juki Plastic Rail

Juki Plastic Rail

SMT Nozzle For Yamaha

Yamaha Nozzle

Nozzles For Yamaha Machine

Smt Yamaha Nozzle

Smt Siemens Nozzle

Nozzles For Siemens Machine

Smt Nozzle For Siemens

Siemens Nozzle

Smt Nozzle For Samsung

Samsung Nozzle

Nozzles For Samsung Machine

Smt Samsung Nozzle

Panasonic Nozzle

Smt Panasonic Nozzle

Smt Nozzle For Panasonics

Nozzles For Panasonic Machine

Smt Juki Nozzle

Nozzles For Juki Machine

Juki Nozzle

High Pressure Juki Nozzle

I-Pulse Nozzle

High Pressure I-Pulse Nozzle

Nozzles For I-Pulsemachine

Smt I-Pulse Nozzle

High Pressure Fuji Nozzle

Nozzles For Fuji Machine

Fuji Nozzle

Smt Fuji Nozzle

Smt Nozzle

Smt Parts Nozzle

Smt Nozzle For Machine

Smt Spare Parts Nozzle

Yamaha Smt Feeder

Yamaha Feeder

Smt Machineyamahafeeder

Smt Feeder For Yamaha

Smt Feeder For Siemens

Smt Machine Siemens Feeder

Siemens Smt Feeder

SIEMENS Feeder

Samsung Smt Feeder

Smt Machine Samsung Feeder

SAMSUNG Feeder

Smt Feeder For Samsung

Panasonic Smt Feeder

Panasonic Feeder

Smt Machine Panasonic Feeder

SMT Feeder For Panasonic

Smt Feeder For Juki

JUKI Feeder

Juki Smt Feeder

Smt Machine Juki Feeder

I-Pulse Feeder

Smt I-Pulse Feeder

Smt Parts I-Pulse Feeder

I-Pulse Type Feeder

Pneumatic Feeder

Fuji Feeder

Smt Fuji Feeder

Fuji Smt Tape Feeder

Smt Machine Feeder

Smt Tape Feeder

Smt Feeder

Feeder For Smt Machine

Siemens Control Valves

Smt Siemens Valve

Siemens Vacuum Valve

Siemens Valves

Smt Samsung Valve

Samsung Vacuum Valve

Samsung Control Valves

SAMSUNG Valve

Juki Vacuum Valve

Juki Ejector

Juki Vacuum Ejector

Juki Valve

Smt Machine Vacuum Ejector

Ejector For Vacuum

Smt Vacuum Ejector

Smt Vacuum Valve

Cylinder For Samsung

Smt Samsung Cylinder

Samsung Air Cylinder

SAMSUNG Cylinder

Panasonic Pir Sensor

Panasonic Sunx Sensor

Panasonic Original Sensor

Panasonic Sensor

Juki Sensor

Juki Laser Sensor

Juki Smt Sensor

Laser Sensor

Juki Cylinder

Juki Square Cylinder

Juki Air Cylinder

Cylinder Square






SMT Cable

Smt Machine Cable,Smt Cable,Smt Spare Parts Fuji Cable,Original Smt Cable

Shenzhen Srisung Technology Co.,Limited , https://www.sr-smts.com