Power Toroid Wdc vs rated VA and acceptable temperature rise

[ruffrecords]

would these work on heaters

https://www.amazon.com/12-Volt-Power-Supply-Standard/dp/B01BDFQ7NO/ref=sr_1_4?ie=UTF8&qid=1503037680&sr=8-4&keywords=12v+5+amp+power+supply

It should do  but it depends on how much current you want to draw and what kind of current limit it has. Probably good for up to 2 amps of heaters. These cheap ones tend to user lower switching frequencies so it is anyone's guess what the noise it like at the output.

Cheers

Ian

Cheers

Ian

 

[abbey road d enfer]

Do you typically connect direct to the outputs ,add extra lc filters , or use a linear reg after the switcher

I add a basic LC filter, typically 100uH+ 470uF in parallels with 0.1uF ceramic. Of course this is a starting value, needs to be adjusted to voltage/current.

 

[johnheath]

I've found the XP Power to be very quiet and consistent.

I find this discussion interesting since I have thought about an external power supply for the heaters of a tube mixer project.

Looking at XPPower website it is a bit hard to narrow the search for a 12VAC or a 6-7VAC supply?

Are there a specific one you recommend or just in general?

Best regards

/John

 

[ruffrecords]

I find this discussion interesting since I have thought about an external power supply for the heaters of a tube mixer project.

Looking at XPPower website it is a bit hard to narrow the search for a 12VAC or a 6-7VAC supply?

Are there a specific one you recommend or just in general?

Best regards

/John

I think you meant to say 12V DC and 6 - 6V DC not AC. Most have universal inputs which means they can be connected directly to the mains in just about any country.

Check out their ECM40US12 model for example.

Cheers

Ian

 

[johnheath]

Thanks Ian

Of course DC. I will have a look at it tomorrow. It will be interesting to see what size they are and how to use it in the best way...

Best regards

/John

 

[ruffrecords]

Thanks Ian

Of course DC. I will have a look at it tomorrow. It will be interesting to see what size they are and how to use it in the best way...

Best regards

/John

They are surprisingly small. The little 50W one I used is only 99mm by 82mm by 35mm - about the same volume as the 80VA toroid I  ended up using.

Cheers

Ian