Small 5.5v+3v power supply

Theo Markettos · 2011-02-26T23:05:18+00:00

I have an electronic appliance (Logik IR100 internet radio) with what Isuspect is a dodgy internal power supply. It runs off both 5v and 3.3v,don't know the current split but total power consumption about 10W. I'dlike to buy a new power supply for it, either a wallwart/brick that producesboth voltages, or a regulator board that takes (say) 12V from a brick Ialready have.I could hack up something with some 78L05s and similar, but I don't reallywant to have to worry about the thermal envelope, and a linear power supplyisn't too efficient (it runs 24/7). Being lazy, I don't desperately want todesign my own switching PSU. Off-the-shelf power supplies (like for PCs)are for hundreds of watts and have terrible efficiency as such low currentdraws if they even start. Even mini-ITX are 80W+.So can anyone suggest a source of a small 10-20W power supply? For example,is there some common consumer gadget where I can steal the PSU? USB chargersmight give me 5V at 1-2A, but is there an easy/cheap way to get 3.3V?Best so far I have is to buy two of these and feed them with 12V... other suggestions?Cheers,Theo

Feb 26, 2011 22 Replies

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tony sayer 15 years ago

One here that does what u want by Traco, we've used many from this maker to replace originals and never a problem:)..

Stock number 706-6026 £14 odd quid plus vat ...

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you want one and haven't an account just mail we're not far away;!..

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tony sayer 15 years ago

Arrgh!, whoops tried to stop that going out as its only 3.5 watts which I suspect is rather feeble for what you need;!...

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Man at B&Q 15 years ago

What's all this about accounts?

RS will sell to anyone, and have done for some years now. All you do is enter your details like you do on any e-commerce site.

MBQ

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