Transistors used in Huggard Proton Magnetometer??

[Valentin Mortensen]

After looking at several different suggestions how to build a


differential proton mag. it looks to me that the simple way is the


"Huggard" way (the articel from 1970). But since I am not a


electronical expert, I have some problems to get the transistors.


Anyone have an idee how to the transistors?


2N5088


2N2712


2N2613


2N2643


2N404


or transistors that correspond to the one used in the construction.


Henrik - Denmark