Semiconductor Devices: Class B Power Amplifier Example

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A numeric example of a class B power amplifier stage, including how to determine compliance and maximum load power.
Reference: Chapter 9 section 2 of Semiconductor Devices.
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18 апр 2020

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Комментарии : 6

@TerryMcKenna 6 месяцев назад

Thanks, this is really informative. My only problem is understanding fractions of units, having used metric for 60 years.

@ElectronicswithProfessorFiore 6 месяцев назад

You're singing to the choir! Halves, quarters, and thirds are fine, but stuff like 7/16ths is just dumb to me. Unfortunately, that's the way we often do things in the USA- just ask any carpenter or plumber!

@simonyoungglostog Год назад

Great stuff! Thank you.

@hordrist929 2 месяца назад

Good evening: I have a question about the power supplies (I am a beginner so it might seem like a stupid one 😂) For me, the power supply must be able to furnish the power demanded by the load + the transistors. What happens if the power suplly cannot do so ? Does it limit the circuit or does it damage the power supply? If for exemple if I have a ±15 V 10VA transformer and an 8 ohm load

@ElectronicswithProfessorFiore 2 месяца назад

That depends on the design of the power supply. If it's overload protected, most likely what will happen is that the supply rails will droop and probably show excessive ripple and noise. The end result will be a distorted output. If the supply is not protected, then yes, you could damage the supply (and also produce distortion along the way). If you are designing your own, a 10 VA transformer would definitely be undersized for that voltage.

@hordrist929 2 месяца назад

@@ElectronicswithProfessorFiore thank you for this detailed answer ! I am indeed trying to make my own guitar amp 😁 No need for something very powerful for a first time, I will already be glad if I can get some sound out of it 😂