On Tuesday, November 8, 2016 at 3:42:12 PM UTC-5, Jon Elson wrote:
wrote:

On Tuesday, November 8, 2016 at 7:21:17 AM UTC-5, N_Cook wrote:

Much Snippage

Questions:

a) What is the actual resistance in ohms of the OEM fan and the
replacement fan if measured across the contacts.

Meaningless. These fans have a commutation circuit and some FETs in them,
so you will not read anything that resembles a resistance on them.

Jon

No. The two that work ohm out at ~10 meg. The two that do not ohm out at ~20K. So, yes, you are seeing 'resistance' on them. Clearly "these fans" are not created equal.

Peter Wieck
Melrose Park, PA