Valves
Posted: Sun Aug 02, 2015 4:52 pm
Pop Quiz. Does anyone know why the valve on the left is not working?
2) no getter. Manufacturing missed the getter phase, so too much bad gas still inside?
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Re: Valves
Posted: Mon Aug 03, 2015 10:38 pm
1) It's not plugged in? But that's too obvious
2) no getter. Manufacturing missed the getter phase, so too much bad gas still inside?
2) no getter. Manufacturing missed the getter phase, so too much bad gas still inside?
Re: Valves
Posted: Fri Aug 07, 2015 7:28 am
It just leaked in some air through the not quite sealed tip over time.
The getter has been flashed, but it's contents has been recombined with air and left a tiny skim of titanium oxide, where it flashed onto the glass. This is in a 50 year old radio gram that otherwise works fine. I'm trying to source a new tube which is a 6an7/A or a ech80 equivalent.
I had a few leaky paper wax caps, but replaced them and all is good there.
All made in Australia.
The getter has been flashed, but it's contents has been recombined with air and left a tiny skim of titanium oxide, where it flashed onto the glass. This is in a 50 year old radio gram that otherwise works fine. I'm trying to source a new tube which is a 6an7/A or a ech80 equivalent.
I had a few leaky paper wax caps, but replaced them and all is good there.
All made in Australia.
Re: Valves
Posted: Tue Oct 13, 2015 8:44 pm
What are these? 
Re: Valves
Posted: Wed Oct 14, 2015 11:24 am
DylanM wrote:What are these?
Think of them as transistors before there were transistors.