Probably find there is a reverse polarity protection diode in a glass encap= sulation. Diodes in unpainted glass encapsulation are known to be good phot= odiodes, and the intensity of a xenon flash would send them into hypercondu= ction. > -----Original Message----- > From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf > Of David Duffy (AVD) > Sent: 19 March 2015 03:48 > To: Microcontroller discussion list - Public. > Subject: Re: [EE] Xenon flashes/long wave high-intensity light causes the > Raspberry Pi 2 SMPS chip to glitch >=20 > It is the flash of light and has had coverage in various forums (EEVblog,= etc). > IIRC it's the reset chip that is the culprit. >=20 > On 19/03/2015 1:38 PM, Randy Dawson wrote: > > I don't think it is the flash thats causing the micro to glitch, but > > the gnd/voltage spike it sees when the thyristor discharges the flash > > cap (a few hundred volts) > > > >> Date: Wed, 18 Mar 2015 23:44:04 -0300 > >> Subject: Re: [EE] Xenon flashes/long wave high-intensity light causes = the > Raspberry Pi 2 SMPS chip to glitch > >> From: daniel.serpell@gmail.com > >> To: piclist@mit.edu > >> > >> Hi!, > >> > >> On Wed, Mar 18, 2015 at 11:01 PM, V G wrote: > >>> http://www.raspberrypi.org/xenon-death-flash-a-free-physics-lesson/ > >>> > >>> Not sure if this has been posted here before, but I was looking to > >>> buy one of these today and came across this post. > >> >=20 > -- > ___________________________________________ > David Duffy Audio Visual Devices P/L > Unit 8, 10 Hook St, Capalaba 4157 Australia > Ph: +61 7 38235717 Fax: +61 7 38234717 > Our Web Site: www.audiovisualdevices.com.au > ___________________________________________ >=20 > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .