Joule Thief

[IotaYodi]

Ditto Pirate. With analog scopes the probes need to be calibrated every time you turn the scope on. This is done with the probe connected to the probe test which normally puts out a square wave. You would adjust the probe with a small screwdriver. Settings on the scope have to be set first. They can vary from scope to scope. Your manual should tell you the settings for calibrating the probe.  You probably have a probe that can be switched to 1x and 10x. The manual should tell you which one to use for calibrating the probe. 

[jeanna]

What is the brand name of the scope. Maybe someone can help better.
I had a lot of problems like the ones you describe, but it was because it was my first scope, the manual was impossible to understand, and nobody else was using a hand held battery powered one. It makes a difference. The instructions are different.

jeanna

[freepow]

Hi, how do you calibrate a  (1x 10x) probe
My instructions say to conect probe tip to probe test on the scope and have the scope switched to ground, but nothing happens, but if i also connect the aligator clip on probe lead to the negitive on the battery on my JT...then i seem to get those funny square waves and i seem to be able to adjust the probe screw which seems to adjust the square wave slightly on the screen.
Is that the correct way to calibrate the probe
If i dont connect the aligator clip to the negitive on my JT then i dont seem to get any square wave on the scope, but the instructions dont tell you what to connect the aligator clip too !

[freepow]

Hello again, I am measuring AC off my secondary with one side of secondary to the prope tip, but where does the aligator clip go to   Does it go to the other side of secondary and with a LED on secondary aswell or without LED, or does the aligator clip go else where

[freepow]

I have already lit one NEON on this secondary, but wont light any more ! and i want to know where to put prope tip and aligator clip ?