Lecture_3 - Capacitors diodes transistors capacitors...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Capacitors, diodes, transistors CHM6158C - Lecture 3 capacitors charging and time response filters semi-conductor diodes rectifiers transformers transistors
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Last lecture What is the current in this circuit? Assume all resistors are equivalent (100 Ω ), what is the total resistance of these circuits? What is the total resistance?
Background image of page 2
3 Capacitors Symbol
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Capacitors Device consisting of two conducting plates separated by an insulating material By e.g. pulling away electrons from one side (Q+), build up electric field, which pulls electrons onto Q-. Unit of capacitance is Farad (F) = C/V (electrical charge that can be built up for a particular voltage) Typically μ F (10 -6 ), nF (10 -9 ), pF (10 -12 ) Dielectric material = insulating material that contains polar molecules that orient with the electric field (energy storage) What is the resistance of a capacitor?
Background image of page 4
RC circuit Charging up a capacitor takes time Every circuit has a resistance, which slows down the flow of electrons )) / exp( 1 ( RC t V V i = Why? What will the current
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/30/2011 for the course CHM 6158 taught by Professor Polfer during the Spring '11 term at University of Florida.

Page1 / 20

Lecture_3 - Capacitors diodes transistors capacitors...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online