[Heath] My IP-27

[Kenneth G. Gordon]

On 10 Jun 2012 at 21:42, MICHAEL TALLENT wrote:

> I would put the good 2553 into Q2 and use a silicon PNP for Q3 as it is just 
> an emitter follower driving the pass transistors.  I put a 2N2869/301 in 
> place of the DTG-600 and it seems to be working OK.  I don't own an Octopus, 
> what do you feed them?

Electrons! :-)

They are a very simple device which uses 1/2 of the secondary of a 6.3 VCT filament 
transformer and two or three resistors (in its simplest form) connected to an oscilloscope.

It takes a bit of learning to interpret its output, but it has never failed me yet.

You can Google "The Octopus" component tester for details.

Thanks, again, for the very valuable information you have given us. I very much appreciate 
your kindness and expertise.

vy 73,

Ken W7EKB