What happens when...

[mspiredm3]

I was skimming. Missed your post. Sorry about that.

Examples abound. With a Gentle Typhoon AP-15, the running draw is 83mA. You could power 12 with a 1A header. But the startup draw is 360mA. Oops.



Holey moley! Under $20 for an aluminum frame San Ace. The low price makes up for having no rpm-reporting line (that's what the -02 means at the end of the product number). 4800 rpm and only 57 dB. 180 cfm. A real brute of a fan. 1.9A.

Do let us know what you draw on startup. I wish Sanyo Denki listed that parameter.

I'm not down if that is true. I would like a tac signal. Where can I find that same fan but with a tac?

 

[ehume]

I'm not down if that is true. I would like a tac signal. Where can I find that same fan but with a tac?

Don't know. Look through the Newark listings, od a Google search, etc.

With San Ace,

9G = fan shape
12 = 120mm frame size
12 = 12 Volts
x = speed range (L, M, F, H are pretty obvious; then E, G, J, A, S, in some order like that)
1 = 38mm frame thickness (3 = 32mm, 4 = 25mm)
01 = 3 wires: gnd, 12v, rpm sensor
02 = 2 wires: gnd, 12v
03, 04: = 4-wire PWM

Sometimes when a fan is PWM with a -04, it will be have a P stuck in, with the frame thickness number moved, something like 9S1212P4F04 -- which is the fan used in the Seasonic PSU's. OTOH, I bought a 9G1212P4G03 from Newark -- a 4100 PWM beast. Then I bought eight 9S1212P4M011's from Tonar.com; their model number was messed around because they were custom.

Finally, a 9G1212H1011 or similar is when the corners are open, like my 9S1212P4M011's. A 9G1212F1021 will have open corners but only two wires, for example.

So a 9GL1212J102 should have closed corners and 2 wires. I think if you want a brute like that you really don't need to know the exact rpm, so a -102 should be fine, especially at the price. And based on my prior experience with San Ace aluminum frame fans, the corners will be open, regardless of the model number.

I just wish I could get a 9G1212P1L041, or better yet a 9S1212P1L041. But San Ace doesn't make 38mm fans at the L speed.