Talk:Resettable fuse

Article title
We should probably find a more neutral, trademark-free title for the article. — Omegatron 19:09, 17 August 2006 (UTC)

Edits from device manufacturers
Their edits probably deserve a bit more scrutiny re WP:NPOV. &mdash;Ryan 13:36, 8 November 2007 (UTC)
 * 206.175.153.4 is from Raychem (acquired by Tyco).
 * 198.175.154.212, 213 are from Tyco.
 * 12.33.189.99 is from Littelfuse.


 * What is the problem, Ryan? The original PolySwitch resettable fuse was invented at Raychem Corporation in the late 1970s and introduced in the early 1980s.  Since Tyco acquired Raychem in 1999, much of the Raychem brand and the history of the device have been wiped from Tyco sites and literature.  Having someone who actually works at the companies or worked there in the past weigh in and provide information is valuable to Wikipedia, since few companies have a formal position of company historian and if their histories are mentioned at all in their Web sites, provide little insight into product development details.  (Disclaimer:  I don't work for nor have ever worked for any of the aforementioned companies.)&mdash;QuicksilverT @ 17:32, 16 August 2010 (UTC)

Globalize
This lists mainly US companies. The product is a commodity these days, so the list of US manufacturers is questionable. Pcap ping  17:29, 13 January 2010 (UTC)


 * It may be a commodity these days, but it is all based on the PolySwitch, invented in Redwood City, California, United States by Raychem. Tyco Electronics is a U.S. company, as are Bourns, Inc. and Littelfuse. So, what were you saying about "globalize" again?&mdash;QuicksilverT @ 17:26, 16 August 2010 (UTC)

History
I used to work at Raychem before the Tyco takeover, and did some research into the origins of the "PolySwitch," which is a brand name for a polymeric resettable fuse. The polymeric resettable fuse was first invented by Gerald Pearson in 1939 at Bell Labs (US patent 2258958). It has been reinvented many times since then. Mheaney (talk) 20:10, 9 May 2012 (UTC)

Distance the connection to thermistors slightly
Having done research into the Thermistor history it seems incorrect to compare these with thermistors. THermistors use semiconductors and changes in the mobility of charge carriers to effect their resistance change. The Polyfuse is pretty much a mechanical device like a carbon microphone and a heating resistor combined.

Idyllic press (talk) 08:29, 14 November 2013 (UTC)


 * What's wrong with comparing the resettable fuse to thermistors? Most thermistors are negative temperature coefficient and decrease in resistance as temperature increases, but some are positive temperature coefficient. Resettable fuses are thermisters that have positive temperature coefficients, but are non-linear to have the latching. I believe that your edits may have removed some clarity to the article, though they could have been better written. Piguy101 (talk) 20:43, 1 February 2014 (UTC)

Schematic symbol
Please add schematic symbols for resettable fuse (PPTC). • Sbmeirow  •  Talk  • 14:18, 17 November 2013 (UTC)

Operation section
The section called "operation" needs to be either sourced or to stay deleted. Unsourced material can be challenged and deleted; it can be restored if proper sources are provided.96.127.242.152 (talk) 08:38, 17 January 2017 (UTC)

A proposal for this important section: It's been said that "Leakage current can range from less than a hundred mA at rated voltage up to a few hundred mA at lower voltages." I'm guessing, shouldn't this be true for resettable fuses with high current rating? I mean can the leakage current be like 80 mA for a resettable fuse of say 50 mA current rating? If so, then I suggest to specify some examples or so. — Preceding unsigned comment added by Diraniyoussef (talk • contribs) 22:14, 19 February 2019 (UTC)

Another proposal: It's been mentioned that "The trip current is the current at which the device is guaranteed to trip." I suggest to clarify "to trip" by linking e.g. to another page, or to clarify it here. — Preceding unsigned comment added by Diraniyoussef (talk • contribs) 22:17, 19 February 2019 (UTC)