216_Gaussian_Resistor_Redux: so where are these bulk resistors available? - Page 1
Forum section: electronics / general

author: nzo
author_rank: Regular Contributor
timestamp: November 16, 2011, 07:07:06 am
content: OneHungLow was a wild goose chase. Must be an Aussie joke. Us NZlanders often don't get Aussie jokes

author: IanB
author_rank: Super Contributor
timestamp: November 16, 2011, 07:16:44 am
content: Yeah, Dave messed up the spelling. Try looking for "Wun Hung Lo"...

author: nzo
author_rank: Regular Contributor
timestamp: November 16, 2011, 07:47:42 am
content: Now you're pulling my chain as well

author: SgtRock
author_rank: Unknown
timestamp: November 16, 2011, 04:32:52 pm
content: Dear Nzo:--According to the apocryphal lore, One Hung Low was the author of a book titled "Chinese Rupture"."Man who have hole in pocket, feel cocky all day" Lao Fu 1410 1620Best RegardsClear Ether

author: EEVblog
author_rank: Unknown
timestamp: November 16, 2011, 11:11:39 pm
content: In our region, Altronics and Jaycar both sell them in boxes of 1000Guaranteed to be from OneHungLowDave.

author: olsenn
author_rank: Frequent Contributor
timestamp: November 16, 2011, 11:24:17 pm
content: Your best bet for buying 1/8 watt 1% metal oxide resistors is dipmicro.com. They sell them individually very cheap and also you can get a pack of 61 values of resistors (E6 series) at 50 resistors per value (total 3050 resistors) for like $25. I've dealt with them many times and they are very professional.If you're looking for 1/4 watt carbon film resistors, try futurlec.com. They are slow and often screw up your order, but they are par none the cheapest source for such things. I bought 400 resistors for each of those 61 values from futurlec and it only costed me like 35 dollars.If you're just a hobbyist, you won't need 10000 packs of a single value of resistor.

author: amspire
author_rank: Super Contributor
timestamp: November 16, 2011, 11:44:23 pm
content: Quote from: EEVblog on November 16, 2011, 11:11:39 pmIt is all the fake OneHungLow resistors on the market that worry me.The ones made by all those European and American companies just trying to cash in on the OneHungLow reputation.

author: nzo
author_rank: Regular Contributor
timestamp: November 17, 2011, 12:14:27 am
content: I was going to come back with a string of smart-assed Mandarin phrases such as "my hovercraft is full of eels" but thought better of itThanks mates for the resistor info. A big bag of mixed resistors would be most useful.But remember this and remember it well: "He who shits in the road will find flies on his return!"

author: EEVblog
author_rank: Unknown
timestamp: November 17, 2011, 01:02:53 am
content: Quote from: olsenn on November 16, 2011, 11:24:17 pmI just got a pack of E24 series resistors on ebay for $26 delivered.http://www.ebay.com.au/itm/120764937186Time to upgrade my rather aging and crusty E12 resistor cabinet.Dave.

author: nzo
author_rank: Regular Contributor
timestamp: November 17, 2011, 04:17:29 am
content: Thanks Dave ~ that's a great link

author: Unknown
author_rank: Unknown
timestamp: November 17, 2011, 09:17:56 am
content: Do check if they're actually metal film, there are some counterfeit metal film resistors on the market that are actually carbon film, distinguishable by the much higher and negative tempco.

author: nzo
author_rank: Regular Contributor
timestamp: November 17, 2011, 09:55:21 am
content: Thanks for the warningalm. Iamstill too naive and trusting, as I found out with the OneHungLow scamMy guess is if the resistors are fake, the news would travel pretty fast, reflecting badly on the seller. What's the easiest way to check if they're genuine?

author: Unknown
author_rank: Unknown
timestamp: November 17, 2011, 02:04:02 pm
content: Quote from: nzo on November 17, 2011, 09:55:21 amThe only sure way is to test every one, much like Dave has been doing, The fakes will show up when their resistance is useless.

author: thilo
author_rank: Regular Contributor
timestamp: November 17, 2011, 08:46:58 pm
content: Until that episode I always thought that one hung low was a joke, but now is it a joke or is there actually a chinese company (not counting inconsistencies from translating the chinese name into an english name).Concerning one hung low: I always thought it refers to a cheap product, because "one" as in "something" that "hung" as past tense of "to hang" "low" as "at the bottom" in a store, because typically the good stuff is easy to reach and for the cheap stuff you have to bend down (or stretch).

author: M. András
author_rank: Super Contributor
timestamp: November 17, 2011, 08:48:01 pm
content: a few of the values would be good for testing randomly if not all of them, im intrested in 1 of these kits too for 27 bucks if all of them thats what they claim it is, its a bargainwould you be so kind Dave and test some of them?

author: Unknown
author_rank: Unknown
timestamp: November 17, 2011, 10:21:17 pm
content: A crude way to verify tempco is to heat up a resistor while measuring it, for example with a hot air rework station. Set the temperature to for example 70°C. This heats up the resistor by about 50°C. A good metal film resistor would have about a 0.1%increasein resistance. Crappy carbon film might have adecreaseof about 1%. Even if you don't have an accurate way to control the temperature, you can just connect several resistors (eg. known good metal film, known carbon film, unknown) to separate multimeters (one ought to be enough for anyone, right?), and heat them up simultaneously. There should be a big difference between the metal film and carbon film.I'm not sure how much of an issue this is these days. A few years ago several Chinese vendors, including Sure electronics, were selling carbon film resistors as metal film.