< It's possible to make transistors with not too complex equipment It's trivial. All you needs is some crystal pure germainium and two gold wires. The wires will be placed ajacent to each other without touching and in contact with the chunk of germainium. To that apply a pulse of current to each wire to cause localized heating and hence contact doping. Test your transistor. You will find it noisy, leaky, slow and exactly the same as the Bell labs proto! congrats, you have succeeded. You can now continue on to grown junction, alloy, diffused and then silicon based devices. Junction FETs will come later after you have figured how to get planar diffusion technology. Allison