(form Puffin). After messing with my amp I seem to have a short somewhere. The stock SMPS has a fault facility and the LED flashes and seems to only supply about 2-3 volts. The supply is not stable and is constantly rising and falling. I have not done anything apart from hard-wiring the inductors to the diodes, where the original tracks disintegrated. Any ideas anyone ?
I'll post a pic if it helps, but the thing looks anything but pretty now!
I'll post a pic if it helps, but the thing looks anything but pretty now!
The inductors are from Farnell, http://uk.farnell.com/jsp/Passive+C...splayProduct.jsp?sku=200694&_requestid=92239. They have 18 turns of 22swg or 24swg wire.
Hi Lee, that's why I couldn't find them at Farnells, it was RS that I must have got the last lot from 
.
I am just running it in at the moment with old speakers, so I have no idea if it is better yet.
The old ferrites needed 12 turns and the new ones need 18, I have no idea if it is better to have more or less turns for the desired 10uH. It's all trial and error for me 😕
.I am just running it in at the moment with old speakers, so I have no idea if it is better yet.
The old ferrites needed 12 turns and the new ones need 18, I have no idea if it is better to have more or less turns for the desired 10uH. It's all trial and error for me 😕
Ahhhh😀
Well I'm no expert but that could mean they will saturate easier at higher currents... having a lower permeability... . hope not mate
Anyway, that link I posted seems to go astray so if you look for fair-rite, 5961000201 on RS then those are the ones.
If you can fit them in then go for the 5961000301 it's perfect for a sonic but may be a little big for this board..
In fact, on my Charlize I changed them to larger cores (5961004901 same material) to ensure there is no saturation at higher listening levels. probably overkill
Well I'm no expert but that could mean they will saturate easier at higher currents... having a lower permeability... . hope not mate
Anyway, that link I posted seems to go astray so if you look for fair-rite, 5961000201 on RS then those are the ones.
If you can fit them in then go for the 5961000301 it's perfect for a sonic but may be a little big for this board..
In fact, on my Charlize I changed them to larger cores (5961004901 same material) to ensure there is no saturation at higher listening levels. probably overkill
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