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Default VI limiter/ SOA protection For push pull Amps.
Hi all
I have recently been getting a couple of Ashdown MAG300 bass amps with blown output stages.
All due to either shorted speaker cables or soft shorted speaker voice coils. .
I recently built a speaker protect circuit based around the uPC1237 (photo), but did not make use of pin 1 that has the overload circuitry, as I’m not sure exactly how to use it.
Anybody have a circuit or idea how to add a VI / SOA limiter to these or similar push pull amplifiers. ??
Thank you all in advance.
Hi all
I have recently been getting a couple of Ashdown MAG300 bass amps with blown output stages.
All due to either shorted speaker cables or soft shorted speaker voice coils. .
I recently built a speaker protect circuit based around the uPC1237 (photo), but did not make use of pin 1 that has the overload circuitry, as I’m not sure exactly how to use it.
Anybody have a circuit or idea how to add a VI / SOA limiter to these or similar push pull amplifiers. ??
Thank you all in advance.
Attached Files