Hi, in this PCB they are independente, in reality you dont need fuses on VAS circuit, but they are the same. But in some cases, the VAS circuit may be feeded with higher volts than the power circuits.
uys. Im shoping someone can help. Im about to populate my A38/40 boards, and whiel gettign the parts ready, I see that the diodes are not marked on the layout. could someone maybe help me out with this please. This is the pcb im using
my schematic for the A40 has all of those as 1n4148 diodes. In fact all diodes on the entire schematic are marked as 1n4148.
I found the schematic for the A38/40, and it does show 1n4148's for all diodes. Thanx Bullitstang.
Here is the schematic I found
no , you can not use 24V.
Here is a simple fan control by Mr. Nelson Pass.
It can be scaled for 24V also. Its constant speed and speed control by trimmer position. Cant get simpler than this.
regards
prasi
Attachments
thank you prasi, IRFZ44 ok in that?
edit: oh that cannot work with heat. i want fan work when amp need it. like a 70C or i dont know maybe more? for now i just connect directly to F100 PSU
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Thank you sir. I have slightly better quality than the cheapies intended. Nd yes, they just just fit in there 🙂
If you want temperature controlled, variable speed, go with this Fan inside audio chassis: variable speed, temperature controlled, analog. No PWM.
nice and fully documented by Mark Johnson.
Could I replace the 2SC2238 and 2SA968 with a 2SC4793 and 2SA1837? I got a bit mixed up with components and got the 2SC4793 and 2SA183 instead
for this circuit
for this circuit
