Hello, i need a little, low power (about 500 mA) step up converter from 12 v
dc to 24 v dc to operate correctly a 4 ways coaxial switch.
I have found project on the net, but i wonder if there is a ready, little,
not ott expensive kit or ready-to-go-module to obtain this 24-26 v dc
voltage from 12 (13,8) dc volt input.

Thank you,
73 de Riccardo IK5WQO

Rightrik wrote:

Hello, i need a little, low power (about 500 mA) step up converter from 12 v
dc to 24 v dc to operate correctly a 4 ways coaxial switch.
I have found project on the net, but i wonder if there is a ready, little,
not ott expensive kit or ready-to-go-module to obtain this 24-26 v dc
voltage from 12 (13,8) dc volt input.

Thank you,
73 de Riccardo IK5WQO


I think you might find a "wall-wart" power supply for a computer printer
to do the job.

You can find these in voltages like 24-28v @ 1 amp for maybe $10 new in
the US. Of course ours are 120v but I imagine you have the 240v types
available over there in I-land.

-Bill

I think you might find a "wall-wart" power supply for a computer printer
to do the job.

You can find these in voltages like 24-28v @ 1 amp for maybe $10 new in
the US. Of course ours are 120v but I imagine you have the 240v types
available over there in I-land.

-Bill

Thank you Bill, but i want to start from 12/13,8 vdc to reach the famous 24
vdc, and do not want to use a 120 or 220 vac supply...

73 de Riccardo IK5WQO

Rightrik wrote:

Hello, i need a little, low power (about 500 mA) step up converter from 12 v
dc to 24 v dc to operate correctly a 4 ways coaxial switch.
I have found project on the net, but i wonder if there is a ready, little,
not ott expensive kit or ready-to-go-module to obtain this 24-26 v dc
voltage from 12 (13,8) dc volt input.

Thank you,
73 de Riccardo IK5WQO




They are available. There are some for mobile police computers for example.
Also look for a 12 to 12 volt with isolated 12 volt output. You can use
the output in series
with the input to get the 24 volt. And a 12 to 8 or so may be OK as many
relays
will work with less than the full 24 volts.

Good luck.
Bill K7NOM

On Wed, 4 May 2005 23:24:24 +0200, "Rightrik" wrote:

Hello, i need a little, low power (about 500 mA) step up converter from 12 v
dc to 24 v dc to operate correctly a 4 ways coaxial switch.
I have found project on the net, but i wonder if there is a ready, little,
not ott expensive kit or ready-to-go-module to obtain this 24-26 v dc
voltage from 12 (13,8) dc volt input.

Thank you,
73 de Riccardo IK5WQO

KEMO Electronics (germany) make these items. They have an interesting range of
small modules with various functions. Have a look at their web page:

http://www.kemo-electronic.com/en/module/m029/index.htm

They are wholesale only, but have distributors around the planet.

KEMO Electronics (germany) make these items. They have an interesting
range of
small modules with various functions. Have a look at their web page:

http://www.kemo-electronic.com/en/module/m029/index.htm

They are wholesale only, but have distributors around the planet.

This should be the best solution, but (up to now) they don't answer to my
email...

73 de Riccardo IK5WQO

On Sun, 8 May 2005 01:53:26 +0200, "Rightrik" wrote:

KEMO Electronics (germany) make these items. They have an interesting
range of
small modules with various functions. Have a look at their web page:

http://www.kemo-electronic.com/en/module/m029/index.htm

They are wholesale only, but have distributors around the planet.

This should be the best solution, but (up to now) they don't answer to my
email...

Because they are strictly wholesale only, they may not reply. In the past I
have had a reply which directed me to the distributor here in Australia.

Because they are strictly wholesale only, they may not reply. In the past
I
have had a reply which directed me to the distributor here in Australia.

They just replay me : "we don't have any distributor for Italy, sorry"...

:-(

On Tue, 10 May 2005 23:08:49 +0200, "Rightrik" wrote:


Because they are strictly wholesale only, they may not reply. In the past
I
have had a reply which directed me to the distributor here in Australia.

They just replay me : "we don't have any distributor for Italy, sorry"...

maybe you need to ask if they have one in some other EU country who does mail
order. At least you can pay in a common currency.

This may be slight overkill (they claim it's good for 100W) but it's
inexpensive:

www.oatleyelectronics.com/kits/k168.html

Alternatively, you could put together something quite simple using
an MC34063A (try Google) - easy to use, readily available.

Bill

"Rightrik" wrote in message

snip
not ott expensive kit or ready-to-go-module to obtain this 24-26 v dc
voltage from 12 (13,8) dc volt input.