On 10 Apr 2006 23:47:37 -0700, "Adnan" wrote:

What are the differences between Coupling , Load and Bypass Capacitors
and what are their advantages.

A coupling capacitor takes the signal from one part of a circuit to
the next, while preventing and DC voltages from getting through.

A load capacitor is generally a no-no in audio. It forces a device to
deliver current, but without dissipating any power, thus resulting in
no useful work being done. Generally you want a load to be a resistor,
not a capacitor.

A bypass capacitor is something which you use in a part of the circuit
which has a vital DC function, but is not useful for the signal
itself. A power supply would be such a device. The bypass capacitor is
placed across the power supply and appears to the signal as a short
circuit.

The advantage of each is generally that if you need them, and you
haven't got them, the circuit won't work. They are not some sort of
alternatives from among which you can choose the best.

d

--
Pearce Consulting
http://www.pearce.uk.com