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Search: Posts Made By: sam_sam_sam
Forum: Troubleshooting Power Supplies and Power Supply Design Yesterday, 05:59 PM
Replies: 2
Views: 34
Posted By sam_sam_sam
Re: LiteON PA-2311-02A blown fuse solved (iMac 27")

Is it possible to post some pictures of this power supply
Forum: Troubleshooting Game Consoles & Other Weird Devices 10-18-2020, 09:15 PM
Replies: 21
Views: 530
Posted By sam_sam_sam
Re: Gardena R38li lawnrobot mainboard power issue

Another product that did not end up in a landfill good job getting it to work again
Forum: General Electronics Technical Discussion 10-18-2020, 10:47 AM
Replies: 20
Views: 243
Posted By sam_sam_sam
Re: MAX134CMH+D A/D Converter: Faulty or OK?

When you have a ic chip that has “DGND” and “ AGND” these are reference points and are different connections you need to use the right reference point depending on what voltage you are measuring
...
Forum: Troubleshooting Computer Displays 10-16-2020, 02:11 AM
Replies: 9
Views: 156
Posted By sam_sam_sam
Re: Viewsonic VX2370Smh-LED - 1/3 of LED not working

I am really surprised that you got this kind-a response from the manufacturer but you are right there still good thing happening and there still good working people out there it is just hard to find...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-15-2020, 10:24 AM
Replies: 4
Views: 124
Posted By sam_sam_sam
Re: SMPS for charger Car battery

You might be able to that but I would leave in C13
Forum: Troubleshooting Power Supplies and Power Supply Design 10-05-2020, 04:39 PM
Replies: 17
Views: 411
Posted By sam_sam_sam
Re: Shopping for a bench power supply, Advice?

From the picture that they have it is a switching power supply
Forum: Troubleshooting Power Supplies and Power Supply Design 10-04-2020, 10:02 AM
Replies: 44
Views: 2,259
Posted By sam_sam_sam
Re: $20 "500W" PSU From MicroCenter, how bad can it be?

I just bought one for myself the other day and had some time to (test ) play with it and it seems work pretty good on a switching power supply that I had modified to work with out being hooked to a...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-01-2020, 10:11 PM
Replies: 17
Views: 411
Posted By sam_sam_sam
Re: Shopping for a bench power supply, Advice?

Here is the post about the bench switching power supply

https://www.badcaps.net/forum/showthread.php?t=72557
Forum: Troubleshooting Power Supplies and Power Supply Design 10-01-2020, 07:14 PM
Replies: 17
Views: 411
Posted By sam_sam_sam
Re: Shopping for a bench power supply, Advice?

Yes this is the non switching type of power supply

One note if you decide to buy this one make sure that it linear power supply not a switching power supply
...
Forum: Troubleshooting Game Consoles & Other Weird Devices 10-01-2020, 04:04 AM
Replies: 21
Views: 520
Posted By sam_sam_sam
Re: desk lamp stopped working... stars?

Post a picture of the item in question
Forum: Troubleshooting Power Supplies and Power Supply Design 09-29-2020, 07:36 AM
Replies: 17
Views: 411
Posted By sam_sam_sam
Re: Shopping for a bench power supply, Advice?

I will give you a recommendation if you work on LED modules I would get the 60 volt @ 5 amp you might pay a little more for it but to me it worth the extra money

I would also recommend not getting...
Forum: General Electronics Technical Discussion 09-29-2020, 03:03 AM
Replies: 2
Views: 135
Posted By sam_sam_sam
Re: Building a Laser / Spindle Engraving Machine very challenging

The seller has agreed to send me another controller
Now just waiting for this controller to show up
Forum: Troubleshooting Power Supplies and Power Supply Design 09-27-2020, 07:56 PM
Replies: 11
Views: 319
Posted By sam_sam_sam
Re: Fwiw: Apc ups

If you ever figure out how to make this less aggressive please post what you did to fix this issue
Forum: General Electronics Technical Discussion 09-27-2020, 06:33 PM
Replies: 2
Views: 135
Posted By sam_sam_sam
Re: Building a Laser / Spindle Engraving Machine very challenging

This is where I talked about the issue with the machine controller

https://www.badcaps.net/forum/showthread.php?t=88568

Look at post 3
Forum: Troubleshooting Power Supplies and Power Supply Design 09-27-2020, 05:44 PM
Replies: 11
Views: 319
Posted By sam_sam_sam
Re: Fwiw: Apc ups

Why not use a line conditioner so you do have the battery backup stress out so much

( one note some battery backup do have a line conditioning to some existent but I do not necessarily trust that...
Forum: General Electronics Technical Discussion 09-27-2020, 04:43 PM
Replies: 2
Views: 135
Posted By sam_sam_sam
Building a Laser / Spindle Engraving Machine very challenging

I have been trying to build this engraving machine for last few months it has very challenging to get the part together

I had bought a very small engraving machine a few years and it sat in the...
Forum: General Electronics Technical Discussion 09-26-2020, 06:34 PM
Replies: 2
Views: 218
Posted By sam_sam_sam
Re: Arduino Nano Controller with a 15 watt Laser hook up issues

More information about this Arduino Nano Controller boards

I took off the connector from the board and you can see in the picture that there is no connection to the PWM output pin and there is no...
Forum: General Electronics Technical Discussion 09-25-2020, 07:57 PM
Replies: 8
Views: 204
Posted By sam_sam_sam
Re: Help sourcing replacement / alternative chip

If you just google 7408 nothing comes up I did not recognize that company logo
Forum: General Electronics Technical Discussion 09-24-2020, 11:12 PM
Replies: 8
Views: 204
Posted By sam_sam_sam
Re: Help sourcing replacement / alternative chip

I would also like to how you found this part number
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-20-2020, 09:05 PM
Replies: 31
Views: 2,075
Posted By sam_sam_sam
Re: Has anyone used this module before Voltage Regulator DC 4-40V To DC1.25-36V 8A 20

Now I just have not had time to devote to this project for some time and also have to resolve some other issues that have come up with mounting the circuit boards that need to be mounted

But...
Forum: General Electronics Technical Discussion 09-20-2020, 06:56 PM
Replies: 4
Views: 144
Posted By sam_sam_sam
Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

Couple of things I forget to mention

The laser that I have with the engraving machine at 100% laser power at 12 volts using engraving controller switching power supply controller which was about...
Forum: General Electronics Technical Discussion 09-20-2020, 03:56 PM
Replies: 4
Views: 144
Posted By sam_sam_sam
Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

Be careful when buying a dual channel switching power supply because some seller are miss interpreting the specifications of this type of switching power supply

Putting the maximum amperage for...
Forum: General Electronics Technical Discussion 09-20-2020, 02:29 PM
Replies: 13
Views: 283
Posted By sam_sam_sam
Re: Motor run capacitor physical size vs voltage rating & measurements?

You would be better off with a 470 volt one if find one it would last longer

Here is where you can find some
...
Forum: General Electronics Technical Discussion 09-20-2020, 01:28 PM
Replies: 4
Views: 144
Posted By sam_sam_sam
Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

Update

The switching power supply has been running for last 2 hours now and the voltage on the 24 volts is now it 24.44 now and now the 12 volts is now 12.44 volts which also fine because the...
Forum: General Electronics Technical Discussion 09-20-2020, 11:48 AM
Replies: 4
Views: 144
Posted By sam_sam_sam
Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

Update

Well my engraving machine is happy with this switching power supply

I had up the voltage a little bit because my 24 volt output side was about 0.500 volts low

brought up the 24...
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