Re: PM Tubes (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 12 Dec 2007 16:56:17 +0000
From: Gordon Forrest <gmforrest@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: PM Tubes (fwd)

Hello All,

           I do have the socket for it. It has 12 resistors inside and 
what looks like a cap. It has 14 pins.

                    Gordon
>
>
>
> ---------- Forwarded message ----------
> Date: Mon, 10 Dec 2007 08:59:34 -0500
> From: Richard Hull <hullr@xxxxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: RE: PM Tubes (fwd)
>
> The sockets for these are critical and contian a resistor divider string to distribute the high voltage and bias the many dynodes.  Without this key component or without a proper pin out, you are stuck.  The voltage requirements are usually 1000 volts at the end of the dynode string.  A socket might have as many as 10 resistors on it and 3 or 4 capacitors.
>
> While the basing of most 8 and 10 dynode tubes is similar, a wrong move or connection could damage the tube.  Most tubes have 12 to 16 pins with 14 being the most common.
>
> Richard Hull 
>
> -----Original Message-----
> From: High Voltage list [mailto:hvlist@xxxxxxxxxx] 
> Sent: Sunday, December 09, 2007 9:40 AM
> To: hvlist
> Subject: PM Tubes (fwd)
>
> Original poster: Steven Roys <sroys@xxxxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Tue, 04 Dec 2007 20:40:41 +0000
> From: Gordon Forrest <gmforrest@xxxxxxxxxxxxx>
> To: hvlist@xxxxxxxxxx
> Subject: PM Tubes
>
> Hello all,
>
>              I have a PM tube (Nuclear Enterprises (G.B.) Ltd Edinburgh, Crystal Type 12/DM//2/12 ) and need some info on it.
> I've had a look online but carn't find much. It has a nice crystal on the end. I want to use it to measure X-rays.
>
> What sort of power supply could I use and electronics to measure the output? I don't even know if it works but would like to give it a try.
>
>                 Gordon
>
>
> [Sorry for the delay in getting this out.  SRR]
>
>
>
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