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Essentially how a Class D amplifier[1] works, and part of the reason you can get so much sound out of tiny portable speakers for so long. [1]: https://en.wikip
by magicalhippo 5mo ago
Essentially how a Class D amplifier[1] works, and part of the reason you can get so much sound out of tiny portable speakers for so long.
[1]: https://en.wikipedia.org/wiki/Class-D_amplifier https://en.wikipedia.org/wiki/Class-D_amplifier
- xxs 5mo agoPWM is used in pretty much everything. Any power supply, any voltage regulation (A cpu has multiple voltages, e.g. core, SoC, cache,), most LED brightness control, lots of motor speed controls and so on. Like mentioned transistor (esp FETs) like to be fully open or fully closed. Class-D amplifier requires to convert the naturally analog signal, unlike say a power supply that has a voltage ref. on/off, with sampling 1st. It makes it for a relatively poor example of PWM use.