Yes, I was surprised I blew it when using a bench supply, which should be very well behaved (it's a good supply). I should add that the cigarette adapter I use is sadly inefficient, even when dropping from 12 to 7-8V. The regulator on that board gets so hot you can't even really touch it for more than a half second. I measured it with an IR thermometer at around 70C. I guess that's what you get for $1. Still, it's fine by me.
On Thu, Jan 15, 2015 at 8:57 AM, Andries Kruger <[email protected]> wrote: > That sounds like a very simple suggestion Paul. I am actually going to > power my IOIO from a 24V supply, so I have an Orion 24/12-5A DC-DC > converter to take me down from 24 to 12. The converter is supposed to > handle transients very well, especially transients from vehicles. My VREG > blew when I hooked it up to the DC-DC converter running from a 24V bench. > So I was really surprised when the VREG didn't survive as I expected a very > clean output. > > On Thursday, 15 January 2015 14:10:25 UTC+2, Paul McMahon wrote: >> >> I, too, fried a Vreg a while ago, and have a 12V application. I was >> using a bench supply at the time. >> I decided to use a cigarette lighter USB charger circuit board in front >> of the ioio vin terminal, $1, and no issues since (at least 100 cycles). >> The board is very small, too. >> I made a slight tweak to the charger board, though not really necessary: >> I adjusted the voltage setpoint resistor to get an output voltage of 7-8 >> volts. To give some headroom over the phone's charging circuit. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "ioio-users" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/ioio-users/FHjcCbAM2Ig/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/ioio-users. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
