DIY Bench Power Supply #2 - Initial Circuit draft and parts

[TorqueRanger]

https://www.youtube.com/watch?v=bHHAuDPh13Y

Where can I find the build thread or get those little pieces for the multimeter???

[MJLorton]

Are you talking about the test leads I was using? If so chat to Franky here: http://mjlorton.com/forum/index.php?topic=227.0

Cheers,
Martin.

[TorqueRanger]

Are you talking about the test leads I was using? If so chat to Franky here: http://mjlorton.com/forum/index.php?topic=227.0

Cheers,
Martin.

Sorry for the late response but I was talking about needle point pin that you used to to test the tranformer and said it could be use to pierce insulation...

[steadyeddie]

Hi Martin, newbie here.........
Looking to buy a bench power supply, but would love to make my own for education,
what's your outlook on progress with the project.
Appreciate you are a busy guy 
Regards, Eddie

[MJLorton]

Are you talking about the test leads I was using? If so chat to Franky here: http://mjlorton.com/forum/index.php?topic=227.0

Cheers,
Martin.

Sorry for the late response but I was talking about needle point pin that you used to to test the tranformer and said it could be use to pierce insulation...

Aaah...that clever needle point. It was made by a viewer and sent to me.
I would post pictures to aid with making one yourself but I think you need to be very careful on how and where it is used. It's very handy, but I could see concerns about piecing insulation to get readings or do continuity tests.
Would be keen to hear what others have to say.

[MJLorton]

Hi Martin, newbie here.........
Looking to buy a bench power supply, but would love to make my own for education,
what's your outlook on progress with the project.
Appreciate you are a busy guy 
Regards, Eddie

Hello Eddie,

First off, welcome aboard!

Ok...yes, life is even more manic than usual with our move to a new home and setting up a new lab again.

It's one of the goals for the (early I hope) new year...

1. Complete the initial electronics tutorial series...about two videos left.
2. One or two more videos on how to solar power your home.
3. Complete the power supply project
4. Setup multimeter selection tool website / page
5. Battery / energy storage database website / page.

I won't commit to a date as there's a fair bit to fit in between those goals...and I just end up shooting myself in the foot...but it will happen.

Cheers,
Martin.

[TorqueRanger]

Are you talking about the test leads I was using? If so chat to Franky here: http://mjlorton.com/forum/index.php?topic=227.0

Cheers,
Martin.

Sorry for the late response but I was talking about needle point pin that you used to to test the tranformer and said it could be use to pierce insulation...

Aaah...that clever needle point. It was made by a viewer and sent to me.
I would post pictures to aid with making one yourself but I think you need to be very careful on how and where it is used. It's very handy, but I could see concerns about piecing insulation to get readings or do continuity tests.
Would be keen to hear what others have to say.

Would love to see and learn more about it and how it's made ...

[Paul Collins M0BSW]

I look forward to the power supply been finished, as part's sit here on the shelf waiting

[taiga]

I too am waiting in anticipation of this project moving forward

[TorqueRanger]

Are you talking about the test leads I was using? If so chat to Franky here: http://mjlorton.com/forum/index.php?topic=227.0

Cheers,
Martin.

Sorry for the late response but I was talking about needle point pin that you used to to test the tranformer and said it could be use to pierce insulation...

Aaah...that clever needle point. It was made by a viewer and sent to me.
I would post pictures to aid with making one yourself but I think you need to be very careful on how and where it is used. It's very handy, but I could see concerns about piecing insulation to get readings or do continuity tests.
Would be keen to hear what others have to say.

He can you post any more information about these or where to buy them ??


Thanks

[MJLorton]

I don't think you can buy such a device...but I stand to be corrected. Here are some pictures to try give you an idea of how it was made.

Looks like a pin in a thin nylon sleeve which is all heat shrinked onto a connector that accepts a multimeter probe tip.

[TorqueRanger]

I don't think you can buy such a device...but I stand to be corrected. Here are some pictures to try give you an idea of how it was made.

Looks like a pin in a thin nylon sleeve which is all heat shrinked onto a connector that accepts a multimeter probe tip.

Thanks for the pics ..
I am not sure if you can buy them or not and that's why I am asking u cause you got them from someone .. Lol I was hoping you had access to the a build thread of those or pics without the heat shrink tubing but wouldn't ask you to destroy you set but do you remember who got them for you ?




Thanks

[MJLorton]

I managed to find an email from the gent that made it just about a year ago. I've sent a message to him asking if he can provide build instructions / pictures. I'll post if he comes back to me.

[iloveelectronics]

I've got a pair of these Taiwanese made add-on needle tips for regular probes. They don't have the insulation sleeves like the one Martin used in the video, but I suppose you can easily just add some heat shrink tubing to insulate if needed.

I might stock these if there's a demand for these things.

[MJLorton]

Trust Franky to find a solution! Good man.

I did receive a reply from the good gent (Frank) regarding his DIY option...here is the info:

Insulation piercing probe tip:
"I only have one photo of the probe tips that I made. The white horizontal pcb mount style '2mm tip jack' that I bought years ago (looks more like a capacitor in the photo) come in various styles. Here is a more commonly shaped one at Mouser for example...

http://ca.mouser.com/ProductDetail/Johnson-Emerson-Connectivity-Solutions/105-0604-001/?qs=sGAEpiMZZMs4AFwHyzhTm8V3%2fI88es6weQUA1mSWlqA%3d

I see that Element 14 carries a horizontal style 2mm, 5A max capacity tip jack that is basically similar to the one in the photo I sent you that displays the items used for my insulation piercing probe tip adapter.

http://www.newark.com/emerson-connectivity-johnson/105-0753-001/test-jack-horizontal-5a-black/dp/39F1744

These particular tip jacks are fine for probing relatively low voltage, low power circuits.

The short terminal at the end of that particular style of tip jack could have one of its sides filed flat and then a short piece of a sewing needle could be soldered against the side of that terminal (I wore safety glasses when I snapped the sewing needle in half using a pair of pliers). The whole assembly could then be covered in shrink sleeving, leaving only a minimal amount of the sharp needle tip exposed.

Honestly, any style of female tip jack could be used as long as it has the required 2mm (0.080") opening to grip a standard DMM test lead probe tip firmly."