Electronics > Beginners

My purchase list for my new lab -- budget $1000+, thoughts?

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Raj:
Forget wall warts and crimper and helping hands
you'll need a good power supply first.

AnyNameWillDo:

--- Quote from: ez24 on July 30, 2018, 04:46:41 pm ---
--- Quote from: AnyNameWillDo on July 30, 2018, 12:55:48 pm ---Perhaps additional wire too of a certain gauge?

--- End quote ---

My go to wire is 18 ga stranded silicon.  My guess most use smaller wire, ie 20 ga

 I also use wire assortments from Harbor Freight and Amazon

--- End quote ---

I believe your guess is correct (I think) -- the datasheet suggests suggests it's 20 AWG: https://media.digikey.com/pdf/Data%20Sheets/Pomona%20PDFs/3782.pdf

"Wire: 20 AWG, stranding 41 x 36 t.c., PVC insulated 2.21 (.087) O.D"

However what confuses me is that the datasheet says it's rated for 5 amps:

"Current: 5 Amperes Cont. "

...and yet when I look up the current limitations (from what I can tell, the "ampacity") for each gauge (for copper) online here http://www.powerstream.com/Wire_Size.htm it says 20 AWG has a max transmission of like 1.3 amps.

I'm probably missing something / will have to research more on how to get the ratings for different wires.

nanofrog:

--- Quote from: AnyNameWillDo on July 30, 2018, 02:09:48 am ---What crimping tools / crimp connectors do you think are worth looking into? Or are a variety of tools needed for a variety of situations?

--- End quote ---
Easy enough to manage if using insulated terminals (red, blue, yellow), as you can decent crimpers for this without blowing $500+ for the tool (die nests use the same color code as the terminals). Some non-insulated too.

Otherwise this gets very expensive, very quickly.

AnyNameWillDo:

--- Quote from: nanofrog on July 30, 2018, 07:24:27 pm ---
--- Quote from: AnyNameWillDo on July 30, 2018, 02:09:48 am ---What crimping tools / crimp connectors do you think are worth looking into? Or are a variety of tools needed for a variety of situations?

--- End quote ---
Easy enough to manage if using insulated terminals (red, blue, yellow), as you can decent crimpers for this without blowing $500+ for the tool (die nests use the same color code as the terminals). Some non-insulated too.

Otherwise this gets very expensive, very quickly.

--- End quote ---

I think I remember seeing something like that here:

https://www.amazon.com/Titan-Tools-11477-Ratcheting-Terminal/dp/B0069TRKJ0/

Had a red/yellow/blue color marking in the jaws. Not sure yet what the differences are. Is this an example of such a crimper?

ez24:

--- Quote from: AnyNameWillDo on July 30, 2018, 06:39:23 pm ---
.. it says 20 AWG has a max transmission of like 1.3 amps.


--- End quote ---

When I hear "transmission",  I think of 100s of feet.  Keep in mind that the current rating of good breadboards is 2 amps.  Even at 1 meter, the voltage drop at 2a is very small.  Try the calculator.

I had no trouble running 5a through 18 inch leads.  FYI the AN8008 leads could not.

If you going to run higher amps then a thicker wire might be more useful.   When I made up my leads, I made a lot of 16 ga with alligator clips.  Like someone else said, I have never used them.  Mini grabbers with 18 ga is what I use.

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