Small fan switch sanity check. by Susan_B_Good in c/askelectronics@discuss.tchncs.de
[-] Susan_B_Good@discuss.tchncs.de 1 points 1 year ago

On a KISS basis - I tend to just use a bimetallic switch or omit the temperature control and just run the fan from power up. It's possible for a processor to suffer some non-handled exception where it no longer executes the temperature management routine.

1
Can't find a 7.4 x 5.08mm female chassis mount socket - am I using the wrong description? (discuss.tchncs.de)
submitted 1 year ago by Susan_B_Good@discuss.tchncs.de to c/askelectronics@discuss.tchncs.de
0 comments fedilink

I have a 12v 6.67A power supply with a male co-axial plug (with centre pin) that's 7.4mm OD and 5.08mm ID. The metal tube is 12.5mm long.

The pin is recessed and about 1mm in diameter - which seems impossibly small for 6.67A.

A chassis mount socket that would take it would come in handy. But I don't seem to be able to find one. Am I just using the wrong search terms?

Any pointers much appreciated.

1
Using multiple windings on two transformers to create one output at maximum power (discuss.tchncs.de)
submitted 1 year ago by Susan_B_Good@discuss.tchncs.de to c/askelectronics@discuss.tchncs.de
0 comments fedilink

Hi everyone, I've just resurrected a broken Weller TCP1 and need a 24v ac supply for it.

I have a 23.5-0-23.5v toroid that I was just going to use half the winding - but it's overkill (8A rating) and going to be very big and heavy.

I've also got a pair of identical transformers with 8-0-8 and a 16-0-16 secondary windings.

I'm thinking of paralleling a 16v winding on each transformer, doing the same with an 8v winding and putting the two in series to give the 24v. However, that leaves two 16v windings and two 8v windings left unused.

Is there any advantage in paralleling those windings also? Any disadvantage? Or just leave them unconnected...Which is what I was about to do..

Sadly I cannot split either winding into two independent ones.

Susan_B_Good

joined 1 year ago