On 19/01/2016 11:18 AM, John Heath wrote:
On Sunday, January 17, 2016 at 11:59:22 PM UTC-5, Phil Allison
Trevor Wilson wrote:
** The VCM163 ( Valve Characteristic Meter) is oddball among
valve testers, uses only AC voltages for ALL supplies -
plates, screens and grids !!
Expensive too, working examples go on Ebay for up to $3000.
**The transformers inside the thing are amazing things. They
would be very expensive to produce today. Mind-numbing numbers
** However, the VCM163 is a VERY clever device, which could be
done more cleverly today. That said, it is very convenient and
it operating within specification. Except for the transformer
switching, it is a very simple device at it's core.
** Full article and internal pics he
One of the C-Core transformers is used with a half wave load, which
could make it growl a bit and get hot after a while.
Can it be used with valves that have anode caps ?
Like the 6CM5, 6DQ6B, 807, 300B and 6146 types.
That looks to be a very well built tube tester.
**It's better than "well built".
Leave it to England
to raise the bar , Britannia rules the waves and all that. I suspect
it comes with a plug in anode top cap lead. Someone on ebay is
selling one for 57 eur. Who in their right mind would pay that much
for a piece of wire ??
**LOL. It's still probably less than what AVO used to sell them for.
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