function fCalcR1(){var vin=parseSuffix(document.VDForm.VinField.value);var vout=parseSuffix(document.VDForm.VoutField.value);var r2=parseSuffix(document.VDForm.R2Field.value);if(vin>0){if(vout>0)vout=0-vout;}if(vin<0){if(vout<0)vout=0-vout;}r1=r2/(Math.abs(vout/vin));document.VDForm.R1Field.value=PrettyNumber(r1);fCalcdB();document.VDForm.VinField.value=PrettyNumber(vin);document.VDForm.VoutField.value=PrettyNumber(vout);document.VDForm.R2Field.value=PrettyNumber(r2);};function fCalcR2(){var vin=parseSuffix(document.VDForm.VinField.value);var vout=parseSuffix(document.VDForm.VoutField.value);var r1=parseSuffix(document.VDForm.R1Field.value);if(vin>0){if(vout>0)vout=0-vout;}if(vin<0){if(vout<0)vout=0-vout;}r2=r1*(Math.abs(vout/vin));document.VDForm.R2Field.value=PrettyNumber(r2);fCalcdB();document.VDForm.VinField.value=PrettyNumber(vin);document.VDForm.VoutField.value=PrettyNumber(vout);document.VDForm.R1Field.value=PrettyNumber(r1);};function fCalcVin(){var vout=parseSuffix(document.VDForm.VoutField.value);var r1=parseSuffix(document.VDForm.R1Field.value);var r2=parseSuffix(document.VDForm.R2Field.value);vin= -vout/(r2/r1);document.VDForm.VinField.value=PrettyNumber(vin);fCalcdB();document.VDForm.VoutField.value=PrettyNumber(vout);document.VDForm.R1Field.value=PrettyNumber(r1);document.VDForm.R2Field.value=PrettyNumber(r2);};function fCalcVout(){var vin=parseSuffix(document.VDForm.VinField.value);var r1=parseSuffix(document.VDForm.R1Field.value);var r2=parseSuffix(document.VDForm.R2Field.value);vout= -vin*(r2/r1);document.VDForm.VoutField.value=PrettyNumber(vout);fCalcdB();document.VDForm.VinField.value=PrettyNumber(vin);document.VDForm.R1Field.value=PrettyNumber(r1);document.VDForm.R2Field.value=PrettyNumber(r2);};function fCalcdB(){var vin=parseSuffix(document.VDForm.VinField.value);var vout=parseSuffix(document.VDForm.VoutField.value);dB=20*Math.log(Math.abs(vout/vin))/Math.log(10);document.getElementById('dblbl').innerHTML=PrettyNumber(dB)+"dB Gain";};function clearlabels(){fCalcdB();}