Help with power supply 24V DC

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thenvk

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I need a power supply that can give me 24V DC.I am working on one project for my frnd, where in need to Increase the voltage on regular basis. Say from 12 V to 24 volts.

When I went to buy such one, I ended in finding a 12V variable one only

http://cgi.ebay.in/HEC-AC-TO-DC-ADAPTER-FOR-1-5-3-4-5-6-7-5-9-12V-OUTPUT_W0QQitemZ330308679376QQcmdZViewItemQQptZLH_DefaultDomain_203?hash=item330308679376&_trksid=p3286.c0.m14&_trkparms=66%3A1|65%3A1|39%3A1|240%3A1318
Now my question is how can I make it to 24 v.
Taking 2 such units and joining the out put wires with each other?
It has a white lined wire and a black one. so will join the same colored wires

will this work or any one can suggest any alternative solution?

thanks in advance
 
thenvk said:
I need a power supply that can give me 24V DC.I am working on one project for my frnd, where in need to Increase the voltage on regular basis. Say from 12 V to 24 volts.

When I went to buy such one, I ended in finding a 12V variable one only

http://cgi.ebay.in/HEC-AC-TO-DC-ADAPTER-FOR-1-5-3-4-5-6-7-5-9-12V-OUTPUT_W0QQitemZ330308679376QQcmdZViewItemQQptZLH_DefaultDomain_203?hash=item330308679376&_trksid=p3286.c0.m14&_trkparms=66%3A1|65%3A1|39%3A1|240%3A1318

Now my question is how can I make it to 24 v.

Taking 2 such units and joining the out put wires with each other?

It has a white lined wire and a black one. so will join the same colored wires

will this work or any one can suggest any alternative solution?

thanks in advance
Click to expand...

Sir ,

Whats Th Requirement in Amps :????
 
It will work, but not the way you think.

One fixed 12V supply and one variable 12V supply will do the trick, you have to connect them in series (not parallel, like you are thinking). One positive to the other's negative, and the output taken from the remaining two wires. Exactly how you would put two batteries in series.

Both supplies must be able to handle the full load current, and not be of the switched type (must have a transformer and rectifier/capacitors), most regular power adapters are of linear type but some fixed supplies like for laptops and USB drives are of the switched type.
 
It will work, but not the way you think.

One fixed 12V supply and one variable 12V supply will do the trick, you have to connect them in series (not parallel, like you are thinking). One positive to the other's negative, and the output taken from the remaining two wires. Exactly how you would put two batteries in series.
Click to expand...

will try to work this out...

as of now 12V is fine,so single one will serve the purpose...May need more volts depending on results
 
Sangram allready suggested best way to 24V..

Well i am adding little more..
For low power requirement 24-0-24 Transformer(1~5A) with rectifier circuit consisting two diode,filter capacitor (1000/2200 µF) inductance coil,Make use of RC/LC filter.
59013317me5.jpg

If circuit in question is for high power applications then replace center tap 24-0-24 with 0-24 transformer with bridge rectifier circuit four diodes.
96456855ir0.jpg
 
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