Formulas

Electronic Formulas

Desmos

Desmos I love Desmos, it is a great free on-line tool that provides graphical analysis of mathematical formulas. I teach an applied calculus course and use Desmos all throughout the semester to help drive home concepts.   Slope Intercept Form.  Notice the equation y=mx+b, where m is the slope and b is the y-intercept. Adjust the …

Desmos Read More »

RMS and Peak to Peak voltage

Why is it important to know how to convert between RMS and Peak to Peak voltages? RMS voltage is used to calculate power for AC circuits. $$P_{watts(W)}=V_{(rms)}times I_{amps(rms)}$$$$P_{watts(W)}=frac{V_{rms}^2}{R_{ohms(Omega)}}$$  Our Oscilloscope displays Peak to Peak voltage. Both averaging and true-RMS DMMs display the RMS voltage of sinusoidal waveforms. For more information FLUKE true-RMS DMMs.  Converting Oscilloscope …

RMS and Peak to Peak voltage Read More »

Ohm’s Law & Power Formulas

Ohm’s Law: Ohm’s Law states that Electromotive Force (Voltage) is equal to Current multiplied by Resistance. $$E_{volts(V)}=I_{amps(A)}times R_{ohms(Omega)}$$ Simplified: $$E=Itimes R$$ We can now manipulate the above equation to solve for Current. $$I_{amps(A)}=frac{E_{volts(V)}}{R_{ohms(Omega)}}$$ Simplified: $$I=frac{E}{R}$$ And also Resistance. $$R_{ohms(Omega)}=frac{E_{volts(V)}}{I_{amps(A)}}$$ Simplified: $$R=frac{E}{I}$$ Power Formulas: The power formula states that Power is equal to Electromotive Force multiplied …

Ohm’s Law & Power Formulas Read More »