Timeline for Boost converter can't power load. What are the limitations?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Dec 30, 2012 at 2:00 | comment | added | Dave Tweed | I figured you were trying to make some sort of steampunk gadget, such as a Nixie Tube Wristwatch... ;-) | |
| Dec 29, 2012 at 18:18 | comment | added | user3657 | I'll try that, I'll need to order the inductors. For now I'll also try using 6 AA in series. This isn't some major project. One of the engineers at my internship gave me two nixie lamps as a gift, and he told me to bring in a circuit if I get it powered with a 9 volt. | |
| Dec 29, 2012 at 18:09 | comment | added | Dave Tweed | If you haven't also increased the value of inductance you're using, then you're wasting a lot of power in the inductor, by essentially saturating it with the maximum current that the battery can supply. At 25 kHz, you should have at least 3.6 mH in order to keep the peak-to-peak ripple current under 100 mA. A regular alkaline battery (about 500 mAh capacity) should be able to run this for a couple of hours. | |
| Dec 29, 2012 at 17:53 | comment | added | user3657 | I lowered the frequency to 25kHz (from 550kHz) at a 97% Duty cycle. It can now power the lamps while maintaining 145 vDC. The battery lasts a little over half an hour before the voltage drops too much :) | |
| Dec 29, 2012 at 13:20 | history | edited | Dave Tweed | CC BY-SA 3.0 |
added 210 characters in body
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| Dec 29, 2012 at 13:07 | history | answered | Dave Tweed | CC BY-SA 3.0 |