Making a needle glow (1000°C) by Battery

Forum 2005-2010 (read only) General Frequently-Asked Questions
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I found this equation that relates Vout, Vin, Vdiode, Duty, iload, frequency, and whatever "min" is.

I also read in an app note that the frequency in these circuits ranges from 100KHz to 5MHz. So that's something to consider as well.