Genious WunHangLo soldering iron! - Page 1
Forum section: electronics / general

author: tatus1969
author_rank: Super Contributor
timestamp: December 23, 2017, 06:29:53 pm
content: I knew that our far east copying friends are getting better and better with designing electronics by their own, but I didn't realize the sheer innovation power that they have developed. This is what I just received via ebay, and look at the specs! Amazing! That is what I call real energy efficiency.

author: kalel
author_rank: Frequent Contributor
timestamp: December 23, 2017, 06:39:57 pm
content: They are advertising a reduced power consumption rate. The way I read it is: "What used to need 40w now needs just 12w, or what used to need 60w - now 14w". On the other hand, what it actually means... I don't know, perhaps the heater is more focused on a small area so that the temperature is reached more quickly? Maybe they are comparing it with a non regulated soldering iron that always uses the full power. Or it's just some random statement.

author: Ampera
author_rank: Super Contributor
timestamp: December 23, 2017, 06:41:22 pm
content: This is incredible! Plug it into itself, we will get infinite energy!

author: tatus1969
author_rank: Super Contributor
timestamp: December 23, 2017, 06:45:30 pm
content: Quote from: kalel on December 23, 2017, 06:39:57 pmconsidering the rest of their writing, I would go for your last guess

author: ez24
author_rank: Super Contributor
timestamp: December 23, 2017, 07:31:46 pm
content: Besides their English (which is better than my Chinese), how do you like it? Seems this gets lots of orders on Aliexpress and good reviews from a lot of sellers and buyers. What I like is that it is not digital (the iron) and small, so this has my attention.https://www.aliexpress.com/item/Free-shipping-EU-plug-YiHua-908D-soldering-iron-station-8858I-Hot-air-station-Adjustable-Constant-temperatur/32817435522.html?

author: Rick Law
author_rank: Super Contributor
timestamp: December 24, 2017, 01:20:28 am
content: I don't know how the solder iron would perform, but I have a roll of solder wire exactly like the one in the picture - from the purchase of also a Yihua, but instead of 908+, mine is a Yihua 937D iron.The solder is very pastie, and however much flux you use (or not), the joints are always dull looking. It took a good bit higher temperature than my 60/40 roll of better solder wire. I stop using it but save it except for emergency in case I run out of real solder write.In my case, upon delivery, I did had to open up the base to fix one loose wire. This one is also a Yihua, may be this one will be okay... Let's hear it from the one(s) who got this Yihua 908+. I am curious.

author: Red Squirrel
author_rank: Super Contributor
timestamp: December 24, 2017, 03:42:28 am
content: Wait till this tech hits the space heater industry. "1500w equivalent heater, only uses 300w!"

author: cdev
author_rank: Super Contributor
timestamp: December 24, 2017, 04:06:54 am
content: Good point, mine too, unfortunately.Quote from: ez24 on December 23, 2017, 07:31:46 pm

author: amyk
author_rank: Super Contributor
timestamp: December 24, 2017, 04:34:09 am
content: It reminds me of the energy-saving statements on CCFLs... although I'm more curious about the "Pitch-dard".It reads like some strange poem:Pitch-dardA turnA rubSparkling!

author: chriswebb
author_rank: Unknown
timestamp: December 24, 2017, 07:27:57 am
content: Quote from: ez24 on December 23, 2017, 07:31:46 pmI'm confused by this comment. Are you doing manuals for cheap soldering irons that are being targeted for China?

author: NiHaoMike
author_rank: Super Contributor
timestamp: December 24, 2017, 07:32:55 am
content: Quote from: Red Squirrel on December 24, 2017, 03:42:28 amThat already exists, it's called a heat pump.

author: tatus1969
author_rank: Super Contributor
timestamp: December 24, 2017, 02:40:15 pm
content: Quote from: ez24 on December 23, 2017, 07:31:46 pmI bought it as a second iron for SMD rework, and it is more than good enough for that. I haven chosen this one because it is very compact.My main concern about it is electrical safety. It could never pass CE testing because of the lead going to the iron is definitely not mains rated as you can see from this picture. The heating element is isolated (ceramic body), and the metal shaft is connected to earth via a spring.Three "corrections" to the advertised specs:- it is 18W max (measured), not 65W- it has no temperature control, but uses a simple triac dimmer- its max temperature is maybe 300°C ("measured" using kapton tape on tip to reduce reflections, and an IR thermometer), most likely not 480°C

author: gamalot
author_rank: Super Contributor
timestamp: December 24, 2017, 03:38:07 pm
content: Well, I am a Chinese, let me try to explain it.I think it is just an analogy, like one says that a 10W LED bulb looks as bright as a 40W incandescent bulb.

author: kalel
author_rank: Frequent Contributor
timestamp: December 24, 2017, 04:04:02 pm
content: Quote from: gamalot on December 24, 2017, 03:38:07 pmI am not Chinese, but I understood it the same way. To understand these things (perhaps translated by Google or another translation service), we need to ask "what could it mean". It's just some marketing stuff as it doesn't say what it compares this with. The 14w of this iron is like 60w of what?In any case, the lack of temperature control is not great. But at least it is earthed.

author: gamalot
author_rank: Super Contributor
timestamp: December 24, 2017, 04:21:45 pm
content: Quote from: kalel on December 24, 2017, 04:04:02 pmTheir intention should be compared with the old school external heating soldering iron, I guess.

author: tatus1969
author_rank: Super Contributor
timestamp: December 24, 2017, 07:27:04 pm
content: Quote from: gamalot on December 24, 2017, 03:38:07 pmThis analogy is not applicable to heaters, their efficiency is always 100% (except power transmission losses) because an electrical heating element always converts *all* electrical energy into thermal energy.A soldering iron that consumes 18W is an 18W iron and cannot honestly be advertised as a 65W iron.