Introduction: How to Make Paper Transistor
HOW TO MAKE PAPER TRANSISTOR
List of material need
1. Paper (any book are note paper )
2. Pencil (any one )
3. LED (20 mA small LED)
4. Wire single strand
5. Sticking tape
6. Battery (6 volt 4.5ah or 12 volt 7ah for best result )
List of material need
1. Paper (any book are note paper )
2. Pencil (any one )
3. LED (20 mA small LED)
4. Wire single strand
5. Sticking tape
6. Battery (6 volt 4.5ah or 12 volt 7ah for best result )
Step 1: Step 2
Step; 2
By using an pencil draw a transistor shape on paper you have (note: make it as small as possible and mean time big enough to wire to be pleased on it )
By using an pencil draw a transistor shape on paper you have (note: make it as small as possible and mean time big enough to wire to be pleased on it )
Step 2: Step
draw a outer line using pencil
Step 3: Step 3
Step 3
By using your pencil try to fill the space with multiple layer of pencil cote many as you can until you get reflection on paper (note : use blunt tip other vise paper may damage )
Step 4:
Step 4
Above image shows that (E, B, C) emitter base collector by using the sticking tape please a negative terminal from a battery to an emitter terminal of paper transistor at bottom side
Step 5:
Step 5
Taka a LED and please a cathode at collector terminal stick with tape (make sure it properly touching the paper) and anode terminal of an LED to an positive end of a battery (NOTE: by this time LED will glow other vise check the connection
Step 6:
Step 6
And using a single strand wire make another positive terminal extension and please on the base terminal of an paper transistor (note : do not stick it )
By this base supply the LED will turn off (NOTE: because the negative supply traveling trough the emitter to collector terminal is intercepted so at the base terminal the positive potential is equal or greater than the negative potential ( + => - ) so the LED turns off )
And using a single strand wire make another positive terminal extension and please on the base terminal of an paper transistor (note : do not stick it )
By this base supply the LED will turn off (NOTE: because the negative supply traveling trough the emitter to collector terminal is intercepted so at the base terminal the positive potential is equal or greater than the negative potential ( + => - ) so the LED turns off )
17 Comments
2 years ago
A transistor is a semiconductor device semi half conducting it's not completely wrong (it's also a sort of electronic switch) , but a real transistor is more sensitive and cut the current it's also operates on electrostatic electricity and is more based on the npn pnp junction
4 years ago on Step 6
Not a transistor, just a resistor. The "base" is just a tap on the resistor, connected to V+ just shorts the LED out. If you put a current meter on this, you'll find more current flows when the LED is off.
6 years ago
You are right ... it is a "sistor" ... but with a "re" not a "tran."
6 years ago
haha lol what you think you can fool us.... you make a graphite circuit and make short circiut to show the led shops.. nice bro lmao
7 years ago on Introduction
sir, what you did is a simple carbon type resistor resistor
7 years ago
Is that a pnp transistor or a npn transistor.If no answer then its not a transistor ha ha ha.
8 years ago on Introduction
That is cool.
9 years ago on Introduction
After looking at step 5's image and analysing the wiring I discovered that it is not a transistor. A transistor would light the LED up when you touch the wire in it's base, not turn it off. Basicly what you do is to create a short between the + and the - when you touch the wire, bypassing the LED (electricity takes the least resistance path, in this case the wire, and when the wire is not connected the LED) and turning it off.
Reply 9 years ago on Introduction
you're right that it's not a transistor, but what you're talking about (A transistor would light the LED up when you touch the wire in it's base) is what would happen if it was a npn transistor, there are other transistors that do the same thing as this paper, it just works in a different way.
9 years ago on Introduction
It transfer resistens so its transistor
Reply 9 years ago on Introduction
That's not how a transistor works, a transistor (assuming the commong bipolar transistor) operates as a semiconductor with at least one each of p and n-type semiconducting material. This doesn't transfer resistance or change the resistance of the third terminal, it simply draws power through the shortest available route, far from what a transistor does.
9 years ago
nope it is not an transistor
9 years ago on Introduction
sorry but its not a transistor .....
9 years ago on Introduction
nice idea to play around with!
9 years ago
Still pretty neat.
9 years ago on Introduction
Ah. Actually no this isn't a transistor. The graphite in the pencil lead conducts electricity.
A transistor would require a PNP or an NPN junction to operate.
What is happening here is that the positive connection to the "base" short circuits the LED so all the current is flowing through the wires rather then the LED.
Reply 9 years ago on Introduction
exactly, this is not a transistor at all.