The most realized protection approaches are without relay - i. e. not integrated in the driver unit for speaker relay.
Various examples therefore are to find under
https://sound-au.com/soa.htm#s5.0 (fig. 5.1)
http://www.bitsavers.org/components/national/_appNotes/AN-0898.pdf (fig. 1)
https://hifisonix.com/wp-content/uploads/2013/05/soaprot_12-03-2012.pdf (fig. 1)
https://www.renesas.com/us/en/document/apn/power-mos-fet-application-note
Most relay driver units in power amplifiers contains only DC protect for the speaker voice coil and overheating - go to
https://sound-au.com/project33.htm
and
https://www.diyaudio.com/community/threads/ta7317-protection-board.114142/
despite the fact, that SOA protection would be possible - PIN 6, HA12002/PIN 1, µPC1237+TA7317P - go to
https://pdf1.alldatasheet.com/datasheet-pdf/view/87396/HITACHI/HA12002.html
https://pdf1.alldatasheet.com/datasheet-pdf/view/6668/NEC/UPC1237.html
https://pdf1.alldatasheet.com/datasheet-pdf/view/86921/TOSHIBA/TA7317P.html
Here is a thread with same topic, but it is closed:
https://www.diyaudio.com/community/threads/soa-protection-by-relay.84733/
In the attachments some examples for SOA-protection units by relay from old Pioneer vintage devices from the from the 70s.
How I can convert one this overload circuits, so that it can be used for MOS-FET's ?
The question rises up after I heard, that the genuine approach from AVM's M3 isn't good for this aim - go to the schematics in post #2 (jpg-file 7-10) and post #3 (jpg-file 1) under
https://www.diyaudio.com/community/threads/avm-evolution-m3-schematic-wanted.342327/
Thanks for an advice.
P.S.: are there a discrete cone for the PA3004 ?
https://www.diyaudio.com/community/...tion-board-current-requirements.331246/page-6
Various examples therefore are to find under
https://sound-au.com/soa.htm#s5.0 (fig. 5.1)
http://www.bitsavers.org/components/national/_appNotes/AN-0898.pdf (fig. 1)
https://hifisonix.com/wp-content/uploads/2013/05/soaprot_12-03-2012.pdf (fig. 1)
https://www.renesas.com/us/en/document/apn/power-mos-fet-application-note
Most relay driver units in power amplifiers contains only DC protect for the speaker voice coil and overheating - go to
https://sound-au.com/project33.htm
and
https://www.diyaudio.com/community/threads/ta7317-protection-board.114142/
despite the fact, that SOA protection would be possible - PIN 6, HA12002/PIN 1, µPC1237+TA7317P - go to
https://pdf1.alldatasheet.com/datasheet-pdf/view/87396/HITACHI/HA12002.html
https://pdf1.alldatasheet.com/datasheet-pdf/view/6668/NEC/UPC1237.html
https://pdf1.alldatasheet.com/datasheet-pdf/view/86921/TOSHIBA/TA7317P.html
Here is a thread with same topic, but it is closed:
https://www.diyaudio.com/community/threads/soa-protection-by-relay.84733/
In the attachments some examples for SOA-protection units by relay from old Pioneer vintage devices from the from the 70s.
How I can convert one this overload circuits, so that it can be used for MOS-FET's ?
The question rises up after I heard, that the genuine approach from AVM's M3 isn't good for this aim - go to the schematics in post #2 (jpg-file 7-10) and post #3 (jpg-file 1) under
https://www.diyaudio.com/community/threads/avm-evolution-m3-schematic-wanted.342327/
Thanks for an advice.
P.S.: are there a discrete cone for the PA3004 ?
https://www.diyaudio.com/community/...tion-board-current-requirements.331246/page-6
