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Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


help needed

Views: 1197

dave

#47046

help needed | 28 January, 2007

ca anyone help i need to design a circuit which can deliver 18v from 24v the problem is that the "extra" 6v i dont just wanna lose as heat/or lost energy as I have a limited power supply

is there an effective way to do this - i have basic electronic skills putting boards together etc , but not much of a theoretical understanding

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#47051

help needed | 29 January, 2007

On going from 24v to 18v, try: * Voltage regulator * Resistor divider * Transformer

On not generating heat or loosing energy, the laws of physics already are pretty well fixed.

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dave

#47115

help needed | 31 January, 2007

that bloody newton bloke is there anyway less"wastefull 'out of these 3 options

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Rob

#47118

help needed | 31 January, 2007

Hi Dave,

A switching regulator is probably your best bet for efficency - Power Integrations are very good in this arena (www.powerint.com) and have lots of applications support available (Circuit diagrams, engineers etc.). Also ST Microelectronics (www.st.com), National Semiconductor (www.natsemi.com).

Cheers,

Rob.

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Ricky

#47148

help needed | 1 February, 2007

A switching regulator should give you upwards of 85% efficiency. National Semiconductors 'Simple Switchers' are pretty good, and they have some good design tools on their site.

This message was posted Add this forum to your site! Click to learn more. the Electronics Forum @

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dave

#47254

help needed | 6 February, 2007

guys thanx a lot for the help will try em and see how we go

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dave

#47255

help needed | 6 February, 2007

thanx m8 will give it a bash

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