I like the performance of this protect, but it works only in rails supply up to 40VAC.
What are the changes if i want to use separate 18-0-18 up to 24-0-24 VAC in order to use in higher rails power amp?
On 560R/2W you have voltage drop to get 24V on relay coil, with 18-0-18 use short circuit instead 560R/2W and 5,6V zener instead 15V, with 24-0-24 use 20-50R instead 560R/2W, with rails up to 40vac use about 1k/5W instead 560R/2W (you must change resistor value to get 24v on relay coil). GND from separate protect psu must be conect to main gnd.
Regards
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There is overload protect (short circuit) if you conect PRO pin to emiter of NPN output transistor in positive rail.I think its only DC protect, better to check with Mile to confirm.
Hi Wiljj78
greetings does this protector have SHORT CIRCUIT protection
warm regards
Andrew
Yes there is short circuit protection if you conect PRO to emiter of NPN output trasistor.
Regards
On 560R/2W you have voltage drop to get 24V on relay coil, with 18-0-18 use short circuit instead 560R/2W and 5,6V zener instead 15V, with 24-0-24 use 20-50R instead 560R/2W, with rails up to 40vac use about 1k/5W instead 560R/2W (you must change resistor value to get 24v on relay coil). GND from separate protect psu must be conect to main gnd.
Regards
Thanks for the info Mr. Mile...
Regards,
Can you post this pcb?I like the performance of this protect, but it works only in rails supply up to 40VAC.
What are the changes if i want to use separate 18-0-18 up to 24-0-24 VAC in order to use in higher rails power amp?
Can you post this pcb?
Here you are...
Attachments
Thanks !Here you are...
If i remember correctly you have another version based on 555 i.c.
If it so can you post this, or give the post number?
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Hi q such friends of this prestigious product I am fond of amplifiers and I would like if I can you please colaborarme with scheme and apex pcb A14 THE BRING A IC 071
English please
dave
Does anyone have PA protector ? Not the speaker protector, i mean if the speaker get SHORT / BURN first the PA will safe...
Regards.
There is protect with NE555 (DC, thermal, overload and start delay)
Regards
Thanks !
If i remember correctly you have another version based on 555 i.c.
If it so can you post this, or give the post number?
Attachments
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