Can you make transistor?

Can you make transistor?

Today’s transistors are about 70 silicon atoms wide, so the possibility of making them even smaller is itself shrinking. We’re getting very close to the limit of how small we can make a transistor. At present, transistors use electrical signals—electrons moving from one place to another—to communicate.

What can be used in place of a transistor?

Relays: Normally closed relays are all you need to make any logic gate. Normally open relays are also useful. Mag-amps: Magnetic amplifiers could be used to make logic gates similarly to transistor-transistor logic.

What does a point-contact transistor do?

The First Point Contact Transistor The boundary between these two kinds of semiconductors is known as a P-N junction, and it’s a crucial part of a transistor. In the presence of this junction, current can start to flow from one side to the other.

Can you make a transistor with diodes?

No, two diodes connected back to back cannot be used as a transistor. A PN diode will have equal doping on both sides, but for a transistor, the base must have the least doping level and the emitter must be highly doped. Joining two diodes will make the base size larger than the emitter and the collector.

Can you make a transistor by hand?

A point-contact transistor can be done by hand, but a modern BJT or FET can’t.

Can we replace transistor with diode?

Can I replace a germanium transistor with silicon?

You cannot replace germanium transistors with silicon transistors. All voltages, operating conditions and components have to be redesigned.

Is germanium better than silicon?

Ge has higher electron and hole mobility and because of this Ge devices can function up to a higher frequency than Si devices. The germanium diode is also superior to silicon diode in terms of energy loss, current loss, etc. The Ge diode loses only 0.3-0.4 a volt while a silicon diode loses about 0.6-0.7 volts.

What do the 3 pins of a transistor do?

The transistor has three legs, these are the base, collector and the emitter. The emitter is always connected to 0v and the electronics that is to be switch on is connected between the collector and the positive power supply. The base of the transistor is used to switch current through the collector and emitter.

How can we make transistor as a switch?

Cut Off State (Open Switch)

1. The input is grounded i.e. at zero potential.
2. The VBE is less that cut – in voltage 0.7 V.
3. Both emitter – base junction and collector – base junction are reverse biased.
4. The transistor is fully – off acting as open switch.
5. The collector current IC = 0 A and output voltage Vout = VCC.

How can we make a transistor from a diode?

1. Open the 2 diodes to get to the die.
2. Extract the dies.
3. Set the 4 contacts aside.
4. Melt the dies into silicon.
5. Extract the dopants and set aside.
6. Purify the silicon.
7. Let the silicon solidify.
8. Injects the dopants to form 3 regions: N, P, and N.

How hard is it to make a transistor?

Transistors are hard to make because they require two rectifying junctions, one of which, the emitter, needs to be injecting. (The emitter needs to send minority carriers into the base.) Thus the emitter/base junction needs to be either P+/N or N+/P.