Saw this today...never heard of them.  Not much info out there.

You cannot view this attachment.

  

Looks pretty nice..kinda like a red 5150 combo

 

So I got to thinking why don't I just put a fuse in my test lead that is less than 2 amps.

It should be plenty for my little Micky 🐭 Mouse 🐁 experiments.  It's not like I'm in a plant or industrial commercial setting poking around.

So I looked around my collection of glass and blade fuses to see what I could come up with.  I was sure that I could scare up a few fuse holders that never got used and accumulated but couldn't find any.

So now that is the plan.  I would have liked to find a 1.5 A fuse but I only found stuff like 0.5 A and much larger.
And all in glass none of the blade automotive fuses were less than 5A maybe 10.

So I had always wondered about voltage ratings on capacitors and fuses and I'm guessing that a component with a lower voltage ratings will be shorted like arcing by a higher voltage.

For example if I have a 250v fuse and I apply 1500v it will short/arc/jump across it?  Rather than open as intended.....idk just thinking out loud maybe I'm wrong.

I know when I had a HV probe and tried to check some HV on an oscilloscope it didn't help it arcd and sparks flew like crazy.

 

Wow that power supply was on for eight days
 

Oh well one time I was reading about tv station or recording studio or some type of place like that and they never ever turned anything off and that was when they had tube equipment.  And some noob trying to do a good job would get chewed out for turning something off.

 

Ok guys back in business

Got my fuses in this evening

You cannot view this attachment.

Despite shaking in my boots I proceeded

Read the manual and they said remove front six 2mm hex head. So I did that then spent like 30 mins trying to separate the case halves had to use an ice scraper and I didn't think it would ever happen.  But finally slowly but surely they opened up to a great sigh of relief. 

You cannot view this attachment.

Removed the old fuse and tested with another meter...open.

Put everything back together and now reading current once again

You cannot view this attachment.

Some good news I was wondering if I had to do this all over again to change the battery but it has a separate door.

You cannot view this attachment.

 

A startling fact when I went to test I found my power supply had been on since the mishap
I went to plug it in and it was already plugged in. Then I went to turn it on and....it was already on.    
 
Gonna have to put up a sign.

But at least the voltage control was turned all the way down. 

You cannot view this attachment.

So hey all good I suppose that was fun but had to spend some money

 

Roger that

These days can buy entire meters for that. 

Anyhow I ordered a pair

Lesson learned $$$

I will def have a dedicated current lead/probe with an unpleasant note and warning on the minigrabber portion.

 

 

Thanks guys
Trying to remember from last night but I think it is called amprobe fp700

2A 1500V fast blow

8x65 mm

Last night I learned that he/she who uses multimeter to measure current but forgets to switch positive lead back before measuring voltage finds themselves looking online for a $30 fuse

    

I thought I would I submit a graphical image of how I feel when you and the others are discussing tech in other threads





You cannot view this attachment.


 


But thanks you guys rock   

Congratulations on the fix

Very impressive

  

Yes sir thank you



They also had me put a 10 ohm resistor in series and measure the voltage drop across it then calculate current V/R and it was spot on to the ammeter current reading

I was impressed kinda makes you wonder why even bother with putting an ammeter in series

 

Today was somewhat exciting as it marks the first experiment to measure current

My assignment in my book was to lay out a circuit with a 1.5k resistor and measure current at 6, 12, and 18v then compare with calculated

For some reason I was really nervous shaking like a leaf idk yeah I was kinda freaked out thinking I was gonna blow something up

Especially when I had to take it up to 18v

But it went off without a hitch. All good

You cannot view this attachment.

  

last night i ordered some old millammeters 0-500 and some centered plus and minus

probably too big for what I need but i figured i would start somewhere and try not to blow em up

I really want to get a blue anatek esr meter but i am gonna make myself build one (diy esr meter) on my own first

I have looked at a few put together on videos and various schematics

I guess i need to breadboard it first then try to assemble a diy version

everything i see says i need a microammeter so i may have to scare one up

 

I need some ammeters for my little textbook exercises.

I have been trying to figure out the difference in ac and dc meters.

Im def old skool and have been browsing various junky analogue meters on the auction site. I like the ones that have different terminals so I can start out high and not accidentally blow it up. 
I know i can use my dmm to measure current but i really would rather use something expendable 

another problem i have with analogue is im no expert at knowing polarity so maybe if i connect it backwards it wont be good for the meter...whereas a digital would just tell me minus microamps ?

I have some old ammeters that are way to big to measure stuff like micro and milliamps.  I know I can do some calculations and add resistor shunt to make a little meter measure larger but I dont think I can go the other way...ie make for example a 15 amp simpson meter measure micro or milliamps.

peace out

 

I needed to color code my scope probes...

y was easy...put yellow there

for x I had a choice of blue green and pink

so as a tribute to Paul Gilbert I picked pink for X


You cannot view this attachment.

I was gonna break this down and put everything away then I remembered I had some zener diodes

so i grabbed one and tried it

You cannot view this attachment.

then swapping ends

You cannot view this attachment.

so that is cool i just dont know why everything is bassackwards

  

also i used to think these were cool heck i cant get away from them

this is what i see with the circuit open

You cannot view this attachment.

 


EDIT wondering now if i should have switched the scope probes
I did swap the transformer leads but should it really matter since its alternating current