uTracer

Double check your connections between the board and tube socket. Don't forget that tube pins are

Hi Thomas, Without seeing what you call “funny”, it is very possible your tube is oscillating during

 Hi Jo: This might help - http://www.r-type.org/exhib/aaa0078.htm . 73, Jamie WB4YDL Sent from my

Early curve tracers produced oscillograms by stepping and sweeping voltages You can read the history

"Can the internal heater connections on the Utracer stay open , that is, not connected."

My PIC says 26C, but according to the FAQ on Ronald's site the C stands for "code protected,

Yes. On Thursday, November 30, 2023 at 11:20:40 PM UTC-5 Andrzej wrote: Thank you for a quick reply.

I suppose I should have looked a little closer at the two - the internal construction is different -

I had similar issues. I had been careless somehow and sent the kit back to NL for Ronald to fix my

I would not be at all surprised if the calibration values are different. I have been using uTJS

US made Hickok tube testers had a "Life Test" function which reduced heater voltage by 10%.

Hello! I am waiting for a replacement part, because the anode side does not work, a FET is faulty,

Good points Henning! I use an external isolated heater supply exclusively to set accurate heater

Thank you. On Monday, March 6, 2023 at 3:31:26 PM UTC-5 theold...@gmail.com wrote: Hi Brice, Ronald

OK, then I will keep that in mind. Thank you! Evangelos Στις Σάββατο 4 Μαρτίου 2023 στις 6:39:15 π.μ.

Martin, sorry I forgot to include Yes, I shortened the test leads to the DUT very similar to your

Please disregard this post, it is a duplicate On Friday, February 24, 2023 at 5:49:54 AM UTC-8 Bo

Hi, I am going to buy a ready build uTracer 6 1000V/1A. Is there anybody who is selling an exemplar?

I like that animation, nice way to show the differences are not really significant. On the current

the cathodes are connected together IMO... Bien à vous, Charles Rydel Le dimanche 29 janvier 2023 à

Great! Looks loke I have mothing to worry about except the fixed cathode voltage which is ok for my

And here: https://www.dos4ever.com/uTracerNotebook/Notebook.html#diode On Wednesday, January 11, 2023

Thanks so much. I think I'll get the uTracer 3+ and add an external supply for the filament. I

Thank you Ihor, I missed that. I have read Note 3 as well now! Rocko On Saturday, December 31, 2022

Yes, good suggestion Rocko, makes sense to add those resistors from the start. Direct Link: https://

My tracer is much easier to get into, so I went ahead and added the resistors. The first Thing I

If your current interface is working, then you are probably ok. I have experienced some arcing at the

>>>>I did decide to build the Utracer3+ because I wanted to learn a little more about

My guess is the 50V Vh limit is consistent with the PWM-controlled external heater supply described

Here is an updated calibration .pdf. In this version all data acquisition parameters (ranges,