Showing posts with label Power Supply. Show all posts
Showing posts with label Power Supply. Show all posts

Sunday, October 13, 2019

LW-K3010D power supply - further testing.

As this point I'm not interested in load testing but rather will this power supply be suitable for the type of work I want to do which is low voltage low current - working with LED lighting. Typically 3V, 4.5, 5V and some 12V stuff. So the question is current resolution, how low will it resolve down to?

On the left and just unpacked is a new set of Fairy lights powered by 2 x AA battery box.I tapped into the + supply wire to connect the multimeter in series to measure current with it set on 0.25A or 250mA. The current drawn is just below 100mA.

eBay and dodgy traders or suppliers - UPDATE !!!

As posted after complaining to eBay I got a full PayPal refund within two hours and a message from the trader that there was no need to return the faulty power supply.
Happy to report and I think it's a fair and just outcome after all the hassle that I have been able to repair the faulty power supply that arrived DOA.



Just finished replacing the faulty bits with new components I got from Jaycar this morning.- about $10 bucks. It's working...yay.

Testing with a 12V LED stick that is pulling 390mA. Have to quit now cos there are other jobs on the list, back later to have another play.

Stay tuned ..

Friday, October 11, 2019

eBay and dodgy traders or suppliers.

Purchased this 30V/10A bench power supply AKA lab power supply for Al's Workshop R&D stuff. Unit arrived DOA so asked for replacement or refund.

After days of getting the runaround lodged a complaint with eBay and within couple of hours got a full PayPal refund.

Another new toy for kitties.