Extremely cheap toys from china suggestions  - Page 1
Forum section: electronics / general

author: bd139
author_rank: Super Contributor
timestamp: October 30, 2017, 09:15:51 pm
content: Can anyone suggest some ridiculously cheap I.e. less than a couple of dollars / pounds things you can get from China, particularly interesting modules, components, boards, kits? The more stupid and dangerous the better.I feel like ordering some stuff and forgetting about it for a few weeks and then getting interesting junk roulette deliveries

author: AndyC_772
author_rank: Super Contributor
timestamp: October 30, 2017, 09:22:46 pm
content: Why not just sit down and watch a Big Clive video until the feeling passes?

author: bsalai
author_rank: Regular Contributor
timestamp: October 30, 2017, 09:26:52 pm
content: Quote from: AndyC_772 on October 30, 2017, 09:22:46 pmThe small high voltage module might fit your specs, especially if you fire it up in the garage with some gas fumes.Sent from my iPhone using Tapatalk

author: bd139
author_rank: Super Contributor
timestamp: October 30, 2017, 09:57:58 pm
content: Quote from: AndyC_772 on October 30, 2017, 09:22:46 pmBecause I want to experience the joy of shite not through the portal of youtubeQuote from: bsalai on October 30, 2017, 09:26:52 pmOrdered. 400KV version.I've got a 40KV probe so it'll be interesting to see if it actually gets anywhere near that potential. I doubt it'll get anywhere near that. The entire thing would break down before it got anywhere near even 40KV.

author: Mr. Scram
author_rank: Super Contributor
timestamp: October 30, 2017, 10:13:18 pm
content: Quote from: bsalai on October 30, 2017, 09:26:52 pmIn lieu of an actual static electricity gun, I'm wondering if one of those could be used to create an ESD testing device. Maybe it's a bit too much?

author: bsalai
author_rank: Regular Contributor
timestamp: October 30, 2017, 10:16:33 pm
content: I don’t have a way to measure the voltage but it will arc across 1/8 - 1/4 inch, maybe a bit more. That doesn’t seem anything like 40 KV to meSent from my iPhone using Tapatalk

author: Mr. Scram
author_rank: Super Contributor
timestamp: October 30, 2017, 10:21:11 pm
content: Quote from: bsalai on October 30, 2017, 10:16:33 pmI was just looking at what voltages are needed for what arc. I guess that could be a fairly crude method of establishing the actual voltages involved.

author: bsalai
author_rank: Regular Contributor
timestamp: October 30, 2017, 10:26:42 pm
content: We used to rely on that to select plate capacitors for high voltage RF amplifiersSent from my iPhone using Tapatalk

author: Mr. Scram
author_rank: Super Contributor
timestamp: October 30, 2017, 10:29:22 pm
content: Quote from: bsalai on October 30, 2017, 10:26:42 pmCan you tell us about that process?

author: Cyberdragon
author_rank: Super Contributor
timestamp: October 30, 2017, 10:32:53 pm
content: Quote from: Mr. Scram on October 30, 2017, 10:13:18 pmThere are actual static electricity cannons. Oddly enough they are marked as levitating foil toys, despite the fact they pack a hell of a punch and can fry electronics. I'll try and find some, but I don't know what they are called.EDIT:https://www.amazon.com/s/?ie=UTF8&keywords=fun+fly+stick+magic+levitation+wand&tag=googhydr-20&index=aps&hvadid=178102005990&hvpos=1t1&hvnetw=g&hvrand=337217266583948475&hvpone=&hvptwo=&hvqmt=b&hvdev=t&hvdvcmdl=&hvlocint=&hvlocphy=9008093&hvtargid=kwd-10862990755&ref=pd_sl_hrgcwrlh5_bThe things with the foil or foam balls and rings that hover in front of the stick by static.

author: bsalai
author_rank: Regular Contributor
timestamp: October 30, 2017, 11:49:44 pm
content: Quote from: Mr. Scram on October 30, 2017, 10:29:22 pmWe would estimate the breakdown voltage of variable capacitors by measuring the distance between adjacent plates. I keep thinking 10 thousand volts per inch, but I am not sure that is correct.Wikipedia saysAlthough air is normally an excellent insulator, when stressed by a sufficiently high voltage (an electric field strength of about 3 x 106 V/m or 3 kV/mm), air can begin to break down,So I guess it’s pretty close.Sent from my iPhone using Tapatalk

author: ralphrmartin
author_rank: Frequent Contributor
timestamp: October 31, 2017, 06:39:54 pm
content: There are plenty of Tesla coil kits for under a fiver.