This chapter deals with the unsung hero of most electronic circuits: the
power supply. All too often the power supply is taken for granted and is
not accorded the priority it really deserves; we glibly assume that it is
there and is doing its job properly.
The correct operation of the power supply is, however, crucial to most
electronic circuits. As an example, consider the case of a power supply
used in conjunction with a high quality audio amplifier. Poor regulation
within the power supply will result in significant distortion at high volume
levels as the output voltage falls under load. A large amount of residual
mains rippl ...
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