Switch Mode – VoltLog

Voltlog #290 – Riden RD6006 Output Noise Using Recommended Power Supply NVVV S-400-60

Welcome to a new Voltlog, this will be a rather short video cause I will only be addressing one short subject regarding the Riden RD6006 ripple noise. In my review of this power supply in Voltlog #284 I did measure the output ripple but that was measured while using a transformer to power the unit.

That transformer has very little output noise so the results we obtain can be considered best case scenarios but this may vary in practice, especially if you are using the recommended switch mode power supply. The output of that power supply may not be as clean as the one from the transformer so in this video I’m going to measure the output noise with the switch mode power supply installed.

I’m using the recommended NVVV 400W 60V 6.6A rated power supply, this is what RuiDeng officially recommends to use with their power supply kit. In Voltlog 284 part 3 I took a look inside this power supply so I will link that video on screen if you want to check it out.

Voltlog #269 – 11.11 Shopping Suggestions For Makers

Welcome to a new Voltlog, it’s November and that means the biggest shopping event happening in Asia is coming up, I’m talking about the 11th of november. There are some numbers published for last years event and it seems they registered more than 30 billion in 24 hours in sales, yes you heard right, billions. So it’s a very big event with nice discounts and opportunities for makers like us to get some new gear. That’s why I prepared this video which will be published 1-2 days before the event so you can get some ideas of stuff that you could purchase. I assembled a list, these are products that I’ve tested and used myself which I think are good value for money and a nice addition to any hobbyist lab.

Voltlog #228 – LIDL UltimateSpeed Car Battery Charger Teardown

It’s been a long time since we looked at a product from LIDL so today I have this lead acid battery charger which I got for about $16. From time to time they have these collections of automotive related products, they had this charger among other stuff but it really caught my eye because of this marketing wank which is printed on the box, this thing has a FLIRT Processor and if you were wondering what the hell is a FLIRT processor, it’s a FULL LOGIC INTELLIGENT REGULATION TECHNOLOGY which in my opinion sounds like the kind of title you would find stuffed with keywords on Aliexpress, except they made it an acronym and slapped a chip icon next to it.

Voltlog #72 – DIY AC-DC Off-Line Converter With TNY276/TNY277

This is the first AC-DC power supply that I’m designing and building. Everything seems to work up to a point where the chip (TNY 276 from Power Integration) gets too hot and enters thermal protection. This is where I’m asking my viewers help to jump in with suggestions on what might be wrong.

This is part 2 where I get the circuit working by switching from the TNY276 to the TNY277 which has a higher power rating and is probably the proper IC to use with this transformer (EE1616 ER2741)

And this is part 3 of the video where I finally find the real fault in the circuit. It turns out I was right, this circuit should have worked with the TNY276 as well and it wasn’t the higher power rating of the TNY277 that fixed the issue.