Re: Tek 2215


Ha. They probably didn't think someone would be using it 30+ years later. High voltage does do strange things over the long term.


----- Original Message -----
From: David @DWH [TekScopes]
To: TekScopes@...
Sent: Sunday, March 20, 2016 11:55 PM
Subject: Re: Fwd: Re: [TekScopes] Re: Tek 2215

In a pinch that is a great idea. Using 1/2 watt resistors would be
even better.

I really think Tektronix ran the Allen-Bradley carbon composition
resistors too close to their voltage rating but apparently it worked
out well enough given that they lasted so long. Maybe they had
experience showing that they did not need to be voltage derated.

On Sun, 20 Mar 2016 23:38:57 -0400, you wrote:

>Or you could use a pair of ~ 500k - 1/4 watt film resistors standing off the board for each of the 1 meg resistors. That would spread out the HV stress a bit more.

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