Encyclopedia Magnetica™

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===== Calculator of specific loss of nanocrystalline block cores  =====

Calculator of specific loss of nanocrystalline block cores manufactured by [[http://magneto.pl|Magneto]]

//The approximation is valid over the range of 50 Hz - 5 kHz (with limited accuracy). This equation was fitted to experimental data, and has no theoretical basis.//


|  \\ $P_{nano}$ = $ a · {B_{peak}} ^ b · {f_{kHz}} ^ c $  \\ \\   |  \\ (W/kg)  |
| where: //a// = 5.4 (W/kg), //b// = 2.05 (unitless), //c// = 1.36 (unitless), //B<sub>peak</sub>// - peak flux density (T), //f<sub>kHz</sub>// - frequency (kHz)  ||
|   <HTML>
<!-- ==================== calculator starts here ============== -->
<HEAD>
<SCRIPT Language="JavaScript">

<!--
/**
 * Function that introduces calculator of a given function.
 **/
 
function getSelectedValue1(selectList){
   return selectList[selectList.selectedIndex].value
}

function calculate_function_power_nano_magneto(frm){
// set up variables
var b_peak     = frm.b_peak.value
var f_khz     = frm.f_khz.value
var result1      = "1"

// read values and convert to numbers
b_peak= parseFloat(b_peak)
f_khz= parseFloat(f_khz)

// calculate the main function
result1 = 5.4 * Math.pow(b_peak,2.05) * Math.pow(f_khz,1.36)

// format number to x digits precision, otherwise result will equal 5.611e+2
result1 = result1.toPrecision(4)

// display result
frm.result1.value = result1

}

//-->
</SCRIPT>
</HEAD>
<body>

<form method="post" action="">
 
<i>B<sub>peak</peak></i> (T) =

 <input type="text" value="0.5" name="b_peak" size="7" maxlength="10"onChange="calculate_function_power_nano_magneto(this.form)"> 

   &nbsp; &nbsp; &nbsp; &nbsp;

<i>f<sub>kHz</sub></i> (kHz) = 
 <input type="text" value="0.06" name="f_khz" size="7" maxlength="10"onChange="calculate_function_power_nano_magneto(this.form)">       


        &nbsp; &nbsp; &nbsp; &nbsp; 

<input type="button" name="Button" value="Calculate" onClick="calculate_function_power_nano_magneto(this.form)">
&nbsp; &nbsp;
        
           &nbsp; &nbsp; &nbsp; &nbsp;

<i>Loss</i> (W/kg) = 
<input type="text" name="result1" size="7" maxlength="10" onChange="calculate_function_power_nano_magneto(this.form)">         
        
 </form>
 
</BODY>
<!-- ==================== calculator ends here ============== -->
</HTML>  ||
| //Note: This function is only applicable between 50 Hz - 5 kHz and below 0.7 T, with limited accuracy. The input data must be entered in the units specified, so f = 60 Hz must be entered as "0.06", and so on.//  ||


{{tag>Database_calculators Calculators}}