Transcription of ELECTRONIC FORMULAS - Granite Island Group
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ELECTRONIC FORMULAS . Ohm's Law FORMULAS for D-C Circuits. E ' IR '. P. ' PR E2. P ' I 2R ' EI '. I R. Ohm's Law FORMULAS for A-C Circuits and Power Factor. P PZ E 2 cos1. E ' IZ ' ' P ' I 2 Z cos1 ' IE cos1 '. I cos1 cos1 Z. In the above FORMULAS 1 is the angle of lead or lag between current and voltage and cos 1 = P/EI = power factor or pf. Active power (in watts) P R. pf ' ' pf '. Apparent power (in volt&s) EI Z. Note: Active power is the "resistive" power and equals the equivalent heating effect on water. Voltage/Current Phase Rule of Thumb Remember "ELI the ICE man". ELI: Voltage (E) comes before (leads) current (I) in an inductor (L).
DC Blocked DC Passes High Freq Blocked High Freq Passes DC Low Freq AC High Freq Inductor * Capacitor * Resister Pass Block Attenuate Attenuate * Attenuate * Attenuate
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