Re: Transistors used in Huggard Proton Magnetometer??

[[email protected] (Oliver Krayl)]

Hello Henrik,


I found following Info in my Library about the Transistors:


2N5088, NPN-Silicon, VCEOm: 30Vdc, Icm: 50mA, Pd: 625mW, fT: 50MHz,


hfe: 350~1400 -> Motorola Type (pdf-avail.)


For these ones I got only short Descriptions


[Material,Type/App,(VCEm,Icm,Pdm),equivalents):


2N2712, NPN-Silicon, B>75 equiv: 2N2711,BC168,BC183,BC238,BC548...


2N2613, PNP-Germanium, LF-Type, 30V, 0,05A, 0,12W equiv:


AC125..126,AC151,2SB54,2SB56


2N2643, NPN-Silicon, Dual-Type ! ,45V,0,03A,0,5W, ft>40MHz equiv:


BFY81,2N2913..20


2N404, sorry no Info available (perhaps obsolete)


Greetings


Oliver - Germany


Valentin Mortensen wrote:


> The Proton Mag ForumAfter 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?2N50882N27122N26132N26432N404or transistors that


> correspond to the one used in the construction.Henrik - Denmark


> -----------------------------------------------------------------------