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Speaker DC protection with relays and MOSFETs
https://www.halfgaar.net/dc-protection-with-relays#:~:text=An%20important%20feature%20of%20an%20audio%20amplifier%20is,VI%20limiter%20in%20the%20amplifier%20or%20power%20supply.
Audio Amplifier Protection Circuit - ElectroSchematics.com
https://www.electroschematics.com/amplifier-protector/
Audio Amplifier Protection Circuit. Now you can protect your HiFi amplifier from damage due to excess heat. This circuit will cut off the power to the amplifier board at the moment it senses a high temperature. It automatically connects power when the temperature returns to normal.
EETimes - Over-current protection in audio amplifiers
https://www.eetimes.com/over-current-protection-in-audio-amplifiers/
An over-current detection scheme is easy to implement in audio amplifiers, offering cost-effective protection against external failures, which could otherwise result in damage to the amplifier. It is simple, compact and scalable, and easily applicable to single and split rail designs.
A Paul Kemble web page - audio amplifier protection.
https://www.angelfire.com/sd/paulkemble/sound7.html
Output protection usually appears in a design, sometimes to protect the amplifier from damage by load failure (speaker, wiring, inadequate DIN speaker connectors, etc), or to protect the load from amplifier failure (eg; thermal runaway arising from inadequate heat-sinking and ventilation). This latter appears, in reality, to be the true function since most faulty outputs usually involve a …
Overview of system-level protection in class-D audio ...
https://www.ti.com/lit/wp/slyy125/slyy125.pdf
Overview of system-level protection in class-D audio amplifiers 6 December 2017 • The speaker or speaker wires are shorted (shorted load). • The speaker wires are shorted to ground. • The speaker wires are shorted to a power rail or the battery’s positive output. TAS5414C-Q1 class-D amplifiers have the ability
Amp Going into Protection Mode? Here's What it's Telling ...
https://carvinaudio.com/blogs/guitar-bass-education/amp-going-into-protection-mode-heres-what-its-telling-you
The BX250 and many other amplifiers use the same solid red light to indicate both that the signal is muted and that the amp is in protection mode. If your unit goes into protection mode, it is a good and bad thing- good that further damage is being prevented, but bad in that it may delay the gig.
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