Page 90 - Testing Electronic Components

So, 0.01µF = 10nF = 10,000pF

Microfarad can be written as MFD, MF or µF or simply M. Nanofarad is
written as NF. Picofarad is written as P.F Capacitors rated in picofarads
are found in RF and high frequency circuits. Capacitors rated in
microfarads are incorporated in low-frequency and DC circuits, like
power supplies, audio amplifiers, and digital and timer circuits.

Types of capacitors

There are basically two types of capacitors i.e.

Non-Polarized Capacitor Polarized Capacitor
a) MICA a) Electrolytic capacitor
b) Paper b) Tantalum capacitor
c) Ceramic
d) Polyester
e) Polystyrene

Non-polarized capacitors mean that they can be inserted into a circuit
in any orientation. While polarized capacitors must be inserted in the
proper orientation with respect to applied voltage. If the polarizes
capacitors is connected in opposite polarity, it may explode.

Voltage Rating of Capacitors

Capacitors also have a voltage rating, usually stated as WV for working
voltage, or WVDC. This rating specifies the maximum voltage that can
be applied across the capacitors without puncturing the dielectric. Voltage
ratings for general purpose paper, mica, and ceramic capacitors are
typically 200 to 500 VDC. Ceramic capacitors with ratings of 1 to 5kv are
also available. Electrolytic capacitors are commonly used in 25, 50, 100,
150, and 450v ratings. In addition, 6 and 10V electrolytic capacitors are
often used in transistor circuits.

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