Products > Test Equipment

Do you have any test equipment in your lab that uses vacuum tubes?

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Martin.M:

--- Quote from: Cubdriver on September 15, 2019, 08:06:41 am --- as audiophools gut them for their dual triodes and discard the carcasses.  That really burns me up!

--- End quote ---

they are waiting for the next youtube video:  "we build a scope using a Marantz Tuner"  :palm:

Bill158:
Does a FLUKE 5215A power amp count?  This is used with the 5200A AC Calibrator to generate up to  1000 Volts RMS, up to 100 KHz.  Uses 4 ea. 4X150A transmitting tubes in the output.  This thing is a real "widow maker" if you are not careful.  It will also smoke any DVM that isn't rated at 1000 Volts AC at any frequency.  You need to check the specs on the meter you are trying to calibrate before applying the AC voltage.  It also doubles as a swell lab heater all year around.
Bill

Michael Lloyd:
I've got a few. Some I have duplicates. Some are a little rough but they work. All are not "on" the bench but I can use them as needed or desired. I have a very large Tektronix o-scope that's full of tubes but I haven't done anything with it, yet.

Some stuff I don't have photos of. Like: An Eico-147A signal generator, Eico 315 signal generator, Eico 950 capacitor tester, and the queen of my bench - an Eico 249 VTVM. It shows up in at least one of the photos below

Tektronix 422 in black























Knight 83Y135 Signal Tracer. No photo at the moment

I restored this old oscilloscope. It was an adventure

After


Before (the inside looked worse)
















These two beaters work now:

Technically this isn't usable because it's not restored yet. I don't have a model number or schematic but I haven't looked very hard for it either


james_s:
I'd forgotten, I do have a Heathkit IP-32 power supply that has tubes in it. It's not something I use often, but on occasions where I need a relatively high regulated DC voltage there's nothing else I have that can deliver.

bob91343:
Those are wonderful pictures!  I wish I had the patience to photograph some of my gear.  I have plenty of it that uses tubes.

In fact, yesterday I managed to get working again my venerable HP 428A clip-on dc millliammeter.  Nice to have it again.

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