Power Supply 24V multiple

[athes]

I’m designing a portable device that can be carried around and plugged into the mains

The problem I’m having is that I can only find a single 24 Volt power supply I need to have 3 separate connection. Ideally I was trying to use a computer power supply(multiple connections) but cant find one the is 24V they are mainly all 12V

5V 15V and 24V Volts for different devices in the box, Question is how do I connection the single 24Volt suppy so that it feeds all 3 voltages without frying them


What components should I be looking for

J

 

[vne147]

There are several ways you can get different voltages from a single supply. The easiest in my opinion (but not most efficient) would be for you to use linear voltage regulators like the 7805 and the 7815.

Also, you can get 24V from an ATX computer power supply by using the +12V and -12V outputs together. You might want to revisit your original idea. You could actually get all three voltages you need from the ATX power supply.

for 24V: +12V - (-12V) = 24V
for 15V: +3.3V - (-12V) = 15.3V ≈ 15V
for 5V: just hook up driectly to one of the 5V outputs.

As long as the 3 circuits you are powering are sperate, this should work fine.

 

[smanches]

What current requirements do you have?

 

[mneary]

Another grateful user---

user: athes
last activity: 3rd February 2010 06:55 AM

 

[vne147]

Another grateful user---

user: athes
last activity: 3rd February 2010 06:55 AM

HA! I was thinking the same thing. You're welcome athes. Please come back any time so we can serve you.