Is the power adapter for this unit powerful enough ? - Page 1
Forum section: electronics / beginners

author: l3gi0n
author_rank: Regular Contributor
timestamp: October 06, 2021, 02:52:41 pm
content: I am looking at this unit:https://www.aliexpress.com/item/1005003245839629.html?spm=a2g0o.store_pc_groupList.8148356.25.694068daxLjM4QIt says that it accepts24V? but the adapter that comes with it is19V/4.74A...A similar unit has an adapter with24V/3A:https://www.aliexpress.com/item/32857152188.html?spm=a2g0o.store_pc_groupList.8148356.1.7cea114aoacRV6Is the19V/4.74Aadapter powerful enough for the unit ? or should I get the unit with the24V/3Aadapter ?

author: Jwillis
author_rank: Super Contributor
timestamp: October 06, 2021, 03:05:25 pm
content: The Quicko is a 70W iron with a 72W supply . The Handskit is 72W with a 90W supply .

author: l3gi0n
author_rank: Regular Contributor
timestamp: October 06, 2021, 04:29:17 pm
content: Sorry for being a n00b, You are saying the Handskit power supply is adequate ? It will have no problems driving the soldering station ?I am asking because the voltage for the Handskit's power supply is lower...19V vs 24VAlso, which one would you buy out of the two ?

author: Capernicus
author_rank: Frequent Contributor
timestamp: October 06, 2021, 05:17:11 pm
content: How can you trust any seller selling a soldering station as "iron welding tools"

author: magic
author_rank: Super Contributor
timestamp: October 06, 2021, 05:41:46 pm
content: If heaters are the same in both irons than lower supply voltage will result in slightly less peak power.If the heater is designed for 70W at 24V that means it pulls ~3A from 24V and has 8Ω resistance.You can do the math how much power you will get from 19V and how much current the supply will need to provide, but it's gonna be less.That being said, I'm not sure if I would trust any PSU from AliE. Bottom of the barrel PSUs can be quite bad, with poor reliability and electric and fire safety hazards.There is some chance that maybe the 19V version uses a different heater with less resistance, like there is many variants of the 936 style irons. You never know with those knockoffs. Do your researcheditIf I were to buy something like that, I would look for an option of 24V rated unit sold without PSU and buy some brand name 24V/3A PSU locally.

author: Capernicus
author_rank: Frequent Contributor
timestamp: October 06, 2021, 05:48:00 pm
content: You may be shocked to discover the "PSU" is just a nichrome wire voltage divider just wired straight to the wall outlet.

author: magic
author_rank: Super Contributor
timestamp: October 06, 2021, 05:50:16 pm
content: Hmm, I haven seen that technology yetBut seriously, a crap switchmode PSU may overheat internally, it may fail, it may catch fire, it may short between the output and mains, all sorts of nasty stuff.

author: l3gi0n
author_rank: Regular Contributor
timestamp: October 06, 2021, 05:51:30 pm
content: Quote from: magic on October 06, 2021, 05:41:46 pmCan I use a24V/5Apower supply with the Handskit ? like this:?https://www.amazon.ca/gp/product/B08N4R48LJ/ref=ox_sc_saved_image_1?smid=A14ES6EWTOQOR7&psc=1Is this better than the power supplies from AliExpress ? I am going to need this power supply anyway for other projects. So it could be a wise idea to not buy the power supply from AliE ?Also, between the Quicko and the Handskit, which one would you buy ?

author: tunk
author_rank: Super Contributor
timestamp: October 06, 2021, 06:02:14 pm
content: Or you could get a used laptop power supply locally.They should have reasonable quality and with real specs.