* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Thevenin and Norton equivalents
Scattering parameters wikipedia , lookup
Power engineering wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Stepper motor wikipedia , lookup
Ground (electricity) wikipedia , lookup
Power inverter wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Electrical substation wikipedia , lookup
History of electric power transmission wikipedia , lookup
Three-phase electric power wikipedia , lookup
Mathematics of radio engineering wikipedia , lookup
Two-port network wikipedia , lookup
Earthing system wikipedia , lookup
Power electronics wikipedia , lookup
Voltage regulator wikipedia , lookup
Electrical ballast wikipedia , lookup
Nominal impedance wikipedia , lookup
Surge protector wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Opto-isolator wikipedia , lookup
Buck converter wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Voltage optimisation wikipedia , lookup
Stray voltage wikipedia , lookup
Power MOSFET wikipedia , lookup
Rectiverter wikipedia , lookup
Current mirror wikipedia , lookup
Zobel network wikipedia , lookup
Alternating current wikipedia , lookup
Mains electricity wikipedia , lookup
Lecture 4 • • • • Complex impedance Thevenin and Norton bode plots decibels What’s the impedance of a short piece of thick wire? A) Very large and mostly real B) Very large and mostly complex C) Very large but can be complex and/or real D) About zero E) Can’t tell with the given information What is inside the power supply? A)Lots of wire B) An ideal voltage source and some R C) An ideal current source and some R D)A complex circuit to understand… E) No idea What is inside the power supply? Answer: A complex circuit to understand… That can be modeled as an ideal voltage source and some R OR, as an ideal current source and some R For any combination of simple voltages and linear resistors, you can find an equivalent circuit composed of a single voltage source and a single equivalent resistor, that will produce the same current (and voltage) through RL. (AND Vth and Rth are independent. of RL.) B5 To measure the current thru resistor 3, how should the ammeter be attached? a) d) 1 A 3 A A 4 A b) 12 V 2 c) e) MORE than one of these choices is ok. B6 An ideal ammeter should have A) B) C) D) Zero resistance Infinite resistance A well defined resistance > 0 (e.g. 1 or 1k) Shiny red color B7 To measure the voltage across resistor 3, how should the voltmeter be attached (assume you only attach one at a time)? a) d) 1 V 3 V V 4 V b) 12 V 2 c) e) MORE than one of these choices is ok. B8 An ideal voltmeter should have A) B) C) D) Zero resistance Infinite resistance A well defined resistance >0 (e.g. 1 or 1k) Shiny red color What’s the magnitude (i.e. ‘modulus’) of the impedance of a good voltmeter? A) Very large B) Very small C) Doesn’t matter. Could be either, large or small. What’s the magnitude (i.e. ‘modulus’) of the impedance of a good ammeter? A) Very large B) Very small C) Doesn’t matter. Could be either. What’s the magnitude (i.e. ‘modulus’) of the impedance of a good voltage source? A) Very large B) Very small C) Doesn’t matter. Could be either.