Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to house
in an existing box.

In article ,
rick writes:
Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to house
in an existing box.

I would suggest getting a small wall-wart supply, and feeding the
12V into your box via a 2.1mm power jack. These are much cheaper
than modular mains power supplies for building into your own kit,
and it means you don't need to bother with the mains side yourself.

An example:
http://cpc.farnell.com/powerpax/sw40...a-2/dp/PW03058

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

rick laid this down on his screen :
Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of those
but as it only needs 30mA something small will be easier to house in an
existing box.

A pair of PP3 batteries in series would output 18 to 20v, just add a
push button for when you need to read it.

On Monday, 12 September 2016 17:27:49 UTC+1, rick wrote:
Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to house
in an existing box.

My biggest problem in finding a PSU for this.

http://www.eham.net/reviews/detail/1699

Was obtaining a 9V supply that didn't involve a switching circuit as that just produced so much hash that it wiped out all AM frequencies.

Found one off an old DAB radio.

rick wrote:
Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of

drawer

--
Chris Green
·

On Mon, 12 Sep 2016 17:27:38 +0100, rick
wrote:

Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to house
in an existing box.

But it's still going to need a mains plug so why not use a 12v
wall-wart?


--

Graham.

%Profound_observation%

On Mon, 12 Sep 2016 17:27:38 +0100, rick
wrote:

Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to house
in an existing box.

But it's still going to need a mains plug so why not use a 12v
wall-wart?


--

Graham.

%Profound_observation%

Simon Mason used his keyboard to write :
My biggest problem in finding a PSU for this.

http://www.eham.net/reviews/detail/1699

Lots on Ebay...

http://www.ebay.co.uk/itm/AC-adapter...AOSwuAVW1fJ U

On Monday, 12 September 2016 19:00:28 UTC+1, Harry Bloomfield wrote:
Simon Mason used his keyboard to write :
My biggest problem in finding a PSU for this.

http://www.eham.net/reviews/detail/1699

Lots on Ebay...

http://www.ebay.co.uk/itm/AC-adapter...AOSwuAVW1fJ U

They are rubbish - you need a transformer, not a switching PSU.

"rick" wrote in message
...
Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

Tons of plug packs on ebay and amazon and aliexpress.

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to house in
an existing box.

Be a great idea to test one for rfi though, its getting really hard to find
one that does not double as a radio jammer.
Brian

--
----- -
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please!
"Andrew Gabriel" wrote in message
...
In article ,
rick writes:
Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to house
in an existing box.

I would suggest getting a small wall-wart supply, and feeding the
12V into your box via a 2.1mm power jack. These are much cheaper
than modular mains power supplies for building into your own kit,
and it means you don't need to bother with the mains side yourself.

An example:
http://cpc.farnell.com/powerpax/sw40...a-2/dp/PW03058

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On 12/09/2016 20:18, Simon Mason wrote:
On Monday, 12 September 2016 19:00:28 UTC+1, Harry Bloomfield wrote:
Simon Mason used his keyboard to write :
My biggest problem in finding a PSU for this.

http://www.eham.net/reviews/detail/1699

Lots on Ebay...

http://www.ebay.co.uk/itm/AC-adapter...AOSwuAVW1fJ U

They are rubbish - you need a transformer, not a switching PSU.



Then something like a simple module would be way to go ?

http://tinyurl.com/zrxarbe

On 12/09/2016 18:26, Chris Green wrote:

Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

I have a draw full of psu's ... laptop, router etc, I could use one of

drawer


sorry English is not my first language

On 12/09/2016 18:14, Andrew Gabriel wrote:

I would suggest getting a small wall-wart supply, and feeding the
12V into your box via a 2.1mm power jack. These are much cheaper
than modular mains power supplies for building into your own kit,
and it means you don't need to bother with the mains side yourself.

An example:
http://cpc.farnell.com/powerpax/sw40...a-2/dp/PW03058



I have several of those type .... have to whittle out the psu ones away
from the charger ones

In article ,
"Brian Gaff" writes:
Be a great idea to test one for rfi though, its getting really hard to find
one that does not double as a radio jammer.

A cheap imported one off ebay - I wouldn't be surprised.

Go to a decent supplier.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

rick submitted this idea :
On 12/09/2016 20:18, Simon Mason wrote:
On Monday, 12 September 2016 19:00:28 UTC+1, Harry Bloomfield wrote:
Simon Mason used his keyboard to write :
My biggest problem in finding a PSU for this.

http://www.eham.net/reviews/detail/1699

Lots on Ebay...

http://www.ebay.co.uk/itm/AC-adapter...AOSwuAVW1fJ U

They are rubbish - you need a transformer, not a switching PSU.



Then something like a simple module would be way to go ?

http://tinyurl.com/zrxarbe

Those are switch mode PSU's.

Some SMPSU's can be quite noisy, especially if your interest is HF. I
use a very well filtered and expensive SMPSU as my shack supply, so it
is do-able.

On Monday, 12 September 2016 23:13:12 UTC+1, Harry Bloomfield wrote:
rick submitted this idea :
On 12/09/2016 20:18, Simon Mason wrote:
On Monday, 12 September 2016 19:00:28 UTC+1, Harry Bloomfield wrote:
Simon Mason used his keyboard to write :
My biggest problem in finding a PSU for this.

http://www.eham.net/reviews/detail/1699

Lots on Ebay...

http://www.ebay.co.uk/itm/AC-adapter...AOSwuAVW1fJ U

They are rubbish - you need a transformer, not a switching PSU.



Then something like a simple module would be way to go ?

http://tinyurl.com/zrxarbe

Those are switch mode PSU's.

Some SMPSU's can be quite noisy, especially if your interest is HF. I
use a very well filtered and expensive SMPSU as my shack supply, so it
is do-able.

My outdoor high power led security lights are a bugger on HF as well.

On 12/09/16 21:34, KYW wrote:


"rick" wrote in message
...
Thinking of using one of these temp sensor/displays:
http://tinyurl.com/jzrmp5n


Would need a 30mA DC supply ... 12-24V

Anyone know of small low cost DC supply modules ? ..........

Tons of plug packs on ebay and amazon and aliexpress.

I have a draw full of psu's ... laptop, router etc, I could use one of
those but as it only needs 30mA something small will be easier to
house in an existing box.


I wouldn't!

I'd look in RS or Farnell for one that probably won't catch fire... (Too
many BigClive.com videos).

But seriously, the OP will find something there - either a wall wart or
a small PSU module.