RF Power Density Calculator

Formula given below is as per EPA FCC OET Bulletin NO 65. S = Power Density P = Power Input to Antenna G = Power Gain of Antenna R = Distance to center of Radiation of Antenna Enter value and click on calculate. Result will be displayed. Enter your values: Power Input to Antenna (P):

Convert Units of Mass, Length, and Area

This simple conversion calculator converts various units of mass, length and area. <tdalign=”center”> Enter Value:      Result: <tdalign=”center”>

Reactance Calculators

Enter value and click on calculate. Result will be displayed. Calculate Capacitance and Inductance from Reactance Enter your values: Frequency: Hz Reactance: ohms              Output: Inductance: mH Capacitance: µf Inductive Reactance Calculator Enter your values: Frequency: Hz Inductance: mH              Output: Inductive Reactance XL: Ohms Capacitive Reactance Calculator Enter your values: Frequency: Hz

Sallen-Key Butterworth High Pass Filter Calculator

Ra = Filter Resistor Rb = Filter Resistor (Ra = Rb) Ca = Filter Capacitor Cb = Filter Capacitor (Ca = Cb) Enter value and click on calculate. Result will be displayed. Enter your values: Cutoff Frequency: Hz KHz MHz Output: (Enter any one value – Ra or Rb or Capacitor) Resistor Ra: ohm Kohm

Speed – Distance – Time Calculator

Enter value and selectunit. Then click on calculate and result will be displayed. Calculate Time from Distance and Speed Enter Your Values & select unit: Distance: Metres Millimetres Centimetres Kilometres Inches Feet Yards Fathoms Statute Miles Nautical Miles Light Second Light Minute Light Hour Light Year ParSec Astronomical Unit Speed: Metres per Second Metres per

Efficiency Bandwidth Product Calculators

Enter value, select unit and click on calculate. Result will be displayed. Calculate Efficiency Bandwidth Product (EBP) EBP = Efficiency Bandwidth Product F = Speaker Resonance Frequency Q = Speaker Electrical Enter your values: Speaker Resonance Frequency: Hertz1 / SecondCycle / SecondRotation / Second Speaker Electrical :              Output: Efficiency Bandwidth Product: Calculate Speaker

Equal Component Butterworth High Pass Filter Calculator

Ra = Filter Resistor Rb = Filter Resistor (Ra = Rb) Ca = Filter Capacitor Cb = Filter Capacitor (Ca = Cb) Rc = Feedback Resistor Rd = Feedback Resistor Enter value of Cutoff Frequency, any one value – Resistor or Capacitor, any one value – Resistor Rc or Resistor Rd and click on calculate.

Subwoofer Vent Minimum Port Diameter Calculators

R a = Filter Resistor R b = Filter Resistor (R a = R b) C a = Filter Capacitor C b = Filter Capacitor (C a = C b) R c = Feedback Resistor R d = Feedback Resistor Enter value of Cutoff Frequency, any one value – Resistor or Capacitor, any one value

Non-Inverting Operational Amplifier Resistor Calculator

Enter value and click on calculate. Result will be displayed. Enter your values: Vout: Volts Gain: Volts Rg: K Ohms V1: Volts V2: Volts Vp: Volts Vn: Volts        Output: Rf K Ohms Ra: K Ohms Rb: V

Tee Attenuator Calculator

Enter value and click on calculate. Result will be displayed. Enter your values: Attenuation (A):       dB Input Impedance (Zi):      ohm Kohm Mohm Output Impedance (Zo):      ohm Kohm Mohm        Output: Ra:      ohm Kohm Mohm Rb:      ohm Kohm Mohm Rb:      ohm Kohm Mohm

Calculate Inductance of Electrode or Straight Wire

Enter value and click on calculate. Result will be displayed. Enter your values: Length of Wire:     Inches Diameter of Wire:     Inches        Output: Inductance:     uH

Convert Units of Pressure

Enter value and select a conversion from the buttons below and result will be displayed. Enter Value:      Result:

Line Of Sight Calculator

Enter value, select unit and click on calculate. Result will be displayed. Enter your values: Antenna Height (1st Station):       Antenna Height (2nd Station):      Units: Feet Metres             Output: Radio Horizon (1st Station):      Radio Horizon (2nd Station):      Total Line Of Sight:      Units: Miles Kilometres     

Subwoofer Vent Length Calculators

Enter value, select unit and click on calculate. Result will be displayed. Calculate Length of Vent or Port L = Length of Vent or Port D = Diameter of Vent N = Number of Ports V = Volume of Box F = Tuning Frequency K = End Correction Factor Enter your values:              Output:

Frequency and Wavelength Calculator

F= Frequency C= Speed Of Light = Wavelength Enter value and click on calculate. Result will be displayed. Enter your value: Calculate in :                  Output:                         

Sallen-Key Butterworth Low Pass Filter Calculator

Ra = Filter Resistor Rb = Filter Resistor (Ra = Rb) Ca = Filter Capacitor Cb = Filter Capacitor (Ca = Cb) Enter value and click on calculate. Result will be displayed. Enter your values: Cutoff Frequency: Hz KHz MHz Output: (Enter any one value – Resistor or Ca or Cb) Resistor (Ra = Rb):

RMS Calculator

Enter value, select unit and click on calculate. Result will be displayed. Enter your values: Enter V1 or I1:     Enter V2 or I2:      Enter the duty cycle, D:      (where D is between 0 and 1)        Output: (a) Pulse Waveform: RMS:      DC:      AC:      (b) Triangle Waveform: RMS:      DC:

Ohm’s Law Calculator

Enter value and select a conversion from the buttons below and result will be displayed. Calculate Watts w/ Ohm’s Law: Enter any two of: E, I, and R E: I: R:        Output: Watts:       Calculate Amps w/ Ohm’s Law: Enter any two of: E, W, and R E: W: R: 3-Phase        Output: Amperes:       Calculate

Laser Real-Time Unit Converter

Enter value and select unit. Then click on calculate and result will be displayed in different units. Enter your values: Input Unit: Microns Inches Millimeters Nanometers Microinches Angstroms Mils        Output: Microns:                  Inches:                     Millimeters:          Nanometers:        Microinches:        Angstroms:           Mils:                          

Skin Effect Calculator

Enter value and select unit. Result will be displayed. Enter your values: Frequency: HzKHzMHzGHz        Output: Skin Depth: cmmmuminchesmilsoz/ft^2

HF Filter Calculator

F= Frequency C= Speed Of Light = Wavelength Enter value and click on calculate. Result will be displayed. Enter your value: Calculate in :                  Output:                         

Butterworth Tee LC Low Pass Filter Calculator

Enter value, select unit and click on calculate. Result will be displayed. Enter your values: Cutoff Frequency: Hz KHz MHz GHz Impedance Z0: ohm Kohm Mohm Number of Components: (1-11)              Output: Inductance: Select Unit      nH µH mH H L1:            L2:            L3:            L4:            L5:           

Maximum Flux Density Calculator

Enter value and click on calculate. Result will be displayed. Enter your values: AC Parameters RMS Voltage:       Vrms Frequency:      MHz Number of Turns:      Cross Section of Core:     cm2 DC Parameters DC Current:     Amperes Specific To Core Used:     mH/Turns2        Output: Maximum Flux Density:     Gauss Maximum Flux Density:     Tesla

Pinhole Sizing Calculator

Enter value and select unit. Then click on calculate and result will be displayed. Enter your values: Depth of Camera: (from pinhole to film)       Inches cm mm Aperture Diameter:(Leave value at 0 to use optimum)      mm Metered Aperture:      Inches Metered Exposure Time:      /             Output: Image Diameter:      Optimum Pinhole

Friis Path Loss Calculator

Enter value (enter value of frequency or wavelength) and click on calculate. Result will be displayed. Enter your values: Ptx: dB Wavelength: m Or Frequency: MHz Distance: m Gtx: dB Grx: dB              Output: Prx: