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Thank your for your informations - i will try to work on the construction.
Henrik
-----Oprindelig meddelelse-----
Fra: Oliver Krayl
Til: The Proton Mag Forum
Dato: 1. december 2000 22:30
Emne: Re: Transistors used in Huggard Proton Magnetometer??
>The Proton Mag Forum
>
>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
>> -----------------------------------------------------------------------
Henrik
-----Oprindelig meddelelse-----
Fra: Oliver Krayl
Til: The Proton Mag Forum
Dato: 1. december 2000 22:30
Emne: Re: Transistors used in Huggard Proton Magnetometer??
>The Proton Mag Forum
>
>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
>> -----------------------------------------------------------------------