Fixed voltage compact power supplies

[Tom Derham]

I am looking for a fairly compact power supply solution for powering my
design (a prototype RF transmitter and receiver).

The input will be UK mains (230v, 50hz), and I need to provide 3 output
voltages - 3.3v, 5v and 15v, so need a three-channel supply (or 3 supplies),
each providing up to about 1 Amp each.

I don't need the supplies to be variable, so a laboratory bench supply seems
somewhat overkill, and is quite bulky and expensive.... Yet I can't find
anything obvious from normal sources (RS, Digikey, etc)...

Does anyone have any suggestions?

Many thanks

Tom

 

[Ian Stirling]

I am looking for a fairly compact power supply solution for powering my
design (a prototype RF transmitter and receiver).

The input will be UK mains (230v, 50hz), and I need to provide 3 output
voltages - 3.3v, 5v and 15v, so need a three-channel supply (or 3 supplies),
each providing up to about 1 Amp each.

I don't need the supplies to be variable, so a laboratory bench supply seems
somewhat overkill, and is quite bulky and expensive.... Yet I can't find
anything obvious from normal sources (RS, Digikey, etc)...

Does anyone have any suggestions?

I think, http://www.cpc.co.uk/ may be of use.
They have some multiple output supplies, which may suit.
I don't unfortunately remember if they have the voltage selection in
question.

 

[Jan Panteltje]

I am looking for a fairly compact power supply solution for powering my
design (a prototype RF transmitter and receiver).

The input will be UK mains (230v, 50hz), and I need to provide 3 output
voltages - 3.3v, 5v and 15v, so need a three-channel supply (or 3 supplies),
each providing up to about 1 Amp each.

I don't need the supplies to be variable, so a laboratory bench supply seems
somewhat overkill, and is quite bulky and expensive.... Yet I can't find
anything obvious from normal sources (RS, Digikey, etc)...

Does anyone have any suggestions?

Many thanks

Tom

hehe, buy 3 adjustabe AC-DC adapters...
Or:
transformer, rectifier, filtercap, 3 switchers... or 3 x LM317 on heatsink.
JP

 

[Julie]

I am looking for a fairly compact power supply solution for powering my
design (a prototype RF transmitter and receiver).

The input will be UK mains (230v, 50hz), and I need to provide 3 output
voltages - 3.3v, 5v and 15v, so need a three-channel supply (or 3 supplies),
each providing up to about 1 Amp each.

I don't need the supplies to be variable, so a laboratory bench supply seems
somewhat overkill, and is quite bulky and expensive.... Yet I can't find
anything obvious from normal sources (RS, Digikey, etc)...

Does anyone have any suggestions?

Many thanks

Tom

Look into video game & slot-machine switching power supplies. They are
inexpensive, compact (relatively speaking), and should be available in the
voltages that you require.

Happ Controls sells to the amusement market, I don't know what their
international selection/shipping is, but it may be a start:

http://www.happcontrols.com

 

[James Meyer]

I am looking for a fairly compact power supply solution for powering my
design (a prototype RF transmitter and receiver).

The input will be UK mains (230v, 50hz), and I need to provide 3 output
voltages - 3.3v, 5v and 15v, so need a three-channel supply (or 3 supplies),
each providing up to about 1 Amp each.

I don't need the supplies to be variable, so a laboratory bench supply seems
somewhat overkill, and is quite bulky and expensive.... Yet I can't find
anything obvious from normal sources (RS, Digikey, etc)...

Does anyone have any suggestions?

Many thanks

Tom

Go to www.jameco.com and look at their Jameco #157913. It's got
everything you want with the exception of 12 volts instead of 15. Best of all,
it'a only 8 bucks.

Jim