Objective Development Forums

Re: AVR Doper HVSP problem. Can't get 12 volts

2015-04-04T06:25:43+02:00

I was thinking of debugging this problem step by step. So I'd like to ask if it is ok to build only the boost up portion of the circuit (+5v, inductor, T2 and its 10k resistor, diode and 2 capacitors and nothing more) to see if I am able to get 12 volts like this. And so I'd like to learn what type of switching signal do I have to apply to the 10k resistor of T2?

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Statistics: Posted by waleed030 — Sat Apr 04, 2015 6:25 am

Re: AVR Doper HVSP problem. Can't get 12 volts

2014-12-17T15:04:55+02:00

just to make it clear in case someone else has this problem. in fact why are you replying?

Statistics: Posted by Guest — Wed Dec 17, 2014 3:04 pm

Re: AVR Doper HVSP problem. Can't get 12 volts

2014-12-13T02:24:50+02:00

Do you seriously believe that the original poster has been sitting around waiting more than 5 years for your reply?

Statistics: Posted by Ross_ValuSoft — Sat Dec 13, 2014 2:24 am

Re: AVR Doper HVSP problem. Can't get 12 volts

2014-12-11T22:31:02+02:00

Hi though, I think you have a faulty transistor , if it gets hot probably it is not switching as it should, seems to be always activated. check your transistor and verify your a getting the switching signal coming out of your microcontroller.

Statistics: Posted by Guest — Thu Dec 11, 2014 10:31 pm

AVR Doper HVSP problem. Can't get 12 volts

2009-03-01T22:08:42+02:00

Hello. I can't get 12 volts after D3. It's only around 4.5 volts. T2 base voltage is around 0.6 volts which is ok as I read from previous posts. And T2 gets really hot when I plug in the thing to USB of my computer. At some older posts some other guy also had a similar problem like mine and resolved it but he hadn't explained how.

I was thinking of debugging this problem step by step. So I'd like to ask if it is ok to build only the boost up portion of the circuit (+5v, inductor, T2 and its 10k resistor, diode and 2 capacitors and nothing more) to see if I am able to get 12 volts like this. And so I'd like to learn what type of switching signal do I have to apply to the 10k resistor of T2?

Statistics: Posted by though — Sun Mar 01, 2009 10:08 pm