Ha sorry sloppy wording - I mean perhaps the possible problems you suggest are providing a momentary condition for the IC the latch-up. Apart from the fan controller latching up, I can't see a route by which the circuit will sustain itself in a mode of failure?
Back diode on the fan
10mH...
@hevans
Here is a pic with the values - yes I labelled the op amp backwards.
I did consider those sections but eventually came to the conclusion that they shouldn't be affecting me. However, perhaps something in Harald's explanation could trigger a latch-up condition. Sadly I don't have access...
Hi all,
Thanks a lot for your inputs - really appreciated!
@Alec
Yes it is a logic level MOSFET (I was a bit out of my depth choosing a MOSFET, but went with this one)
I didn't include a diode as I didn't see one in the examples given in the datasheet, happy to add one, but I'm not sure that...
Hi all, newbie here, I've just joined the forum as I've been pulling my hair out over this one for too long!
Scenario is as follows:
I have a large bar fridge, which uses two noisy 12V fans to cool its heat sink. First of all I added an SSR so that the fans only run when the compressor is...