12v transformer/power supply source

[Mellman]

Morning all,

I'm working on building a float switch to turn on a sump pump, but will be using the same logic to build out a float switch for my mash tun sparge arm and I need some help locating a transformer.

I've searched ebay and can't find exactly what I want/am looking for.

I have the 2 wire stainless float switch from ebay; so I need to get 6-12vDC to run through the float switch to fire my relay that'll turn the pump on/off.

I've seen this: http://goo.gl/CV6m2I which would work obviously but I don't need it to be Din mounted, then I found this, a LED transformer, 10W DC, which again should work... http://goo.gl/pBfYzF but I'm not keen on waiting a month for it to arrive.

finally...i found a PCB mounted transformer but I'm not using a PCB Board, so could I just mount it upside down and call it a day?

What are others using?

Cheers

 

[ShineOn]

Is it just a transformer? or is it a power supply?

a Transformer would need a rectifier to convert AC to DC a filter capasitor would be nice to smooth out the DC

 

[MaxStout]

Lots of them on Amazon. If you only need a few amps, there's this. If you need more current, this.

 

[BBBF]

I ordered from this guy. He's in New Jersey, so it came a lot quicker than ordering the same one from China, which was worth a couple extra bucks to me.
http://www.ebay.com/itm/12V-2A-DC-U...ltDomain_0&hash=item5ad32204b2#ht_2844wt_1362

 

[mattd2]

Is it just a transformer? or is it a power supply?

a Transformer would need a rectifier to convert AC to DC a filter capasitor would be nice to smooth out the DC

Could you not spec a AC coil relay, but still would need to confirm the float switch can take the 6-12VAC

 

[scottstribling]

I used an old PC power supply. They have 3.3V, 5V and 12V supply. I converted one to power the electric RV awning on our porch.

 

[Mellman]

I used an old PC power supply. They have 3.3V, 5V and 12V supply. I converted one to power the electric RV awning on our porch.

Sure i could use this but i'm looking for small, plus i still need 120v internally to power the relay.

Could you not spec a AC coil relay, but still would need to confirm the float switch can take the 6-12VAC

nope its a dc only float switch, and i don't want to run 120v ac thru it

I ordered from this guy. He's in New Jersey, so it came a lot quicker than ordering the same one from China, which was worth a couple extra bucks to me.
http://www.ebay.com/itm/12V-2A-DC-U...ltDomain_0&hash=item5ad32204b2#ht_2844wt_1362

perfect thank you!

 

[mattd2]

nope its a dc only float switch, and i don't want to run 120v ac through it

I meant can the float switch handle 12VAC

 

[Mellman]

http://www.ebay.com/itm/Vertical-St...990?pt=LH_DefaultDomain_0&hash=item3a7f2d2436

Max Contact Rating:
50W
Max Switching Current:
1.5A
Max Carry Current:
3.0A
Max Switching Voltage:
220VDC
Max Breakdown Voltage:
300V DC

I'm not sure; i don't see why it couldn't. All it's doing is makign contact or not. i was planning to run 12vdc through it, to a relay to turn the outlet/pump on/off.

 

[ClaudiusB]

http://www.ebay.com/itm/Vertical-St...990?pt=LH_DefaultDomain_0&hash=item3a7f2d2436

Max Contact Rating:
50W
Max Switching Current:
1.5A
Max Carry Current:
3.0A
Max Switching Voltage:
220VDC
Max Breakdown Voltage:
300V DC

I'm not sure; i don't see why it couldn't. All it's doing is makign contact or not. i was planning to run 12vdc through it, to a relay to turn the outlet/pump on/off.

The float switch will work with a relay, go for it.

 

[Mellman]

The float switch will work with a relay, go for it.

problem solved, grabbed an old phone charger from work, will cannibalize the transformer out of it.

Cheers,
-Matt