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A curve tracer might work well. Get Outlook for Android<https://aka.ms/AAb9ysg>

Have you checked out videos on Utube from Mr. Carlsons channel. He does one of these https://youtu.be/LhovRIM5xAo -=Bryan=- ________________________________ Sent: November 30, 2022 2:06 AM To:

Unless you want to repair early tube equipment you should hardly need a leakage tester. If you do deal with early tube equipment then replacing all paper capacitors with plastic film types is a

https://www.youtube.com/watch?v=LhovRIM5xAo Mikek

Hi Pete & All I, too, am interested in this and have been thinking about building a leakage tester.? I had one years ago, back in the days of valves, that used a 'magic eye' as the leakage detector,

Mr Carlson's Lab has published a design for a device for making this test that seems to work well (based on his videos). https://www.patreon.com/MrCarlsonsLab --T

I have various piles of old caps, many NOS, etc. I'm interested in doing a simple go/no-go type of test for leakage. Have power supplies that can do 0 to 3kV DC. Is it practical to put the cap in

Thanks for the reply Paul. As you know I replied replied Via PM. Thanks also Oliver for that info, I should have mentioned I'm in the UK.? Much appreciated all the same. It looks like I may have

There were 'Top Octave Generator' ICs like the Mostek MK50240Nthat were driven by a crystal timebase. http://www.datasheetcatalog.com/datasheets_pdf/M/K/5/0/MK50240N.shtml

Yes, Pete, It does. Accuracy! Conn tried to develop a device for tuning musical instruments - could have been over 50 years ago. It used multivibrators as oscillators and a magic eye - 6E5, as I

The 3 guys I know of that deal with older sun equipment? 2 I have found on Ebay. One known as "mnnorthwoods" I have purchased a manual for a different Sun tester. The other is known as jas2fast, I

Does any of this musical discussion, interesting (to some) though it is, have anything to do with Test Equipment design? The SNR of the thread has drifted alarmingly. Pete G4GJL wrote:

Thank you for posting that information. (not that I need to spend more time watching Youtube!) :-) Mikek

Hello Jeff, ? In the pendulum frequency formula, the factor ‘k’ includes the force of gravity. For a stretched string, the ‘k factor becomes a function of the string tension. Of course, it’s

I have a Pickboy tuner, manufactured by Seiko/Epson (I'm going from memory, I don't have the tuner handy) that I bought over 30 years ago.? At the time it was, as far as I know, the only electronic

Snap, I too have an old Sun Gas Analyser tucked away.? It sounds like it is even more ancient than yours. I had it calibrated a couple of decades ago. It is supposed to be an instrument grade device

Hi I believe this post does come under the requirements of Professional Test Equipment design. I've had this elderly Sun Gas Analyser unused and gathering dust for quite a while. After switching on

I have 2 Singer-Gertsch service monitors. An FM-10 and a FM-10C. No spectrum analyzer but everything else is as you say. Paul, W8AEF _____ From: [email protected]

Love it. I remember going into a consumer electronics store needing a power strip and sales person insisting some almost $100 dollar power strip was what I absolutely needed. Based on the amazing

Jeff 1KHz = 2^3 x 5^3 Hz and 440Hz = 2^3 x 5 x 11 Hz so the difference is? 5^2 and 11. This gives rise to x11 then 1/25 to produce 440Hz. That is all you need. The multiplication by 11 from 1 KHz