|
|
Post by agoodwill on Aug 1, 2022 14:44:37 GMT
Can anyone advise on a good valve tester. Make and model so we can test valves before we sell them
|
|
|
|
Post by firebottle on Aug 1, 2022 15:39:03 GMT
|
|
|
|
Post by rexton on Aug 1, 2022 16:04:37 GMT
Don't these valve testers need calibrating themselves to be accurate and don't you need more equipment to be able to do this?
|
|
|
|
Post by firebottle on Aug 1, 2022 16:19:23 GMT
The 2 Avo testers on ebay have been calibrated.
|
|
|
|
Post by rexton on Aug 1, 2022 16:33:26 GMT
That's good news but I would imagine they need to be checked / calibrated once yearly? It's one of the reasons I've not bought one myself.
|
|
edward
Regular
Still prospecting?
Posts: 194
|
Post by edward on Aug 1, 2022 17:21:57 GMT
Given the popularity of valves I'm surprised there are apparently no modern testers around.
|
|
|
|
Post by rexton on Aug 1, 2022 17:38:47 GMT
There is one made by Orange, the amplifier maker, I'm not sure how good it is and probably nowhere near as good as Mullard / AVO specific testers.
|
|
edward
Regular
Still prospecting?
Posts: 194
|
Post by edward on Aug 1, 2022 21:05:01 GMT
|
|
|
|
Post by firebottle on Aug 2, 2022 7:34:32 GMT
I have made one of those, but a 'skeleton' one. I use an external high voltage supply and two external multimeters so it's not pretty and takes a little setting up.
It only really gives a go-no go result but can show the balance between twin sections.
|
|
edward
Regular
Still prospecting?
Posts: 194
|
Post by edward on Aug 2, 2022 13:47:01 GMT
Ah right Alan. Yes I rather suspected that it is not such a clear solution as the author suggests. I guess it would take you many lunch hours to do properly.  |
|
I'm sure they could knock one up in their lunch break. 
