1. Electronic workshop Lecture-4 Capacitors Dr. Imtiaz Hussain
URL :

2. Introduction
A capacitor is an electronic component used to store electric charges.
Together with resistors and inductors, it is the most frequently used component in electronics.
Capacitors can be fixed and variable.

3. Fixed Capacitors There are to type of fixed capacitors
Electrolytic (fig-a)
Non-electrolytic (fig-b)

4. Electrolytic Capacitors
Electrolytic capacitors need to be connected in correct way (+ve supply to +ve terminal and –ve supply to –ve terminal) to charge them.
They come in large as well as small values but are usually greater than 1µf.

5. Non-Electrolytic Capacitors
Non-Electrolytic capacitors on the other hand can be charged with any polarity and are thus non-polarized.
Values are less than 1µf.
Because they are smaller in size the values of non-electrolytic capacitors have to be decoded.
(1st Digit) (2nd Digit) x 10Multiplier µF/pF

6. Readings S N.o 1 2 3 Polarized/Non-Polarized Value Implication
Faulty or not faulty 1. 2. 3. 4. 5.
S N.o 1 2 3 4 5 6
Polarized/Non- Polarized
Value
Decoded/Read Capacitance
Measured Value
Difference
Percent Error 1. 2. 3. 4. 5.

7. End of Lecture-4 To download this lecture visit
End of Lecture-4