[ARC5] Chinese switching converters

[Scott Johnson]

Look for boost converters, and then look at specs.  Many can use an outboard
FET along with an inductor or transformer, to make just about any voltage
and current you need (within reason).  If you are making a receiver supply,
I would pick a switching frequency above the audio passband, that is not
harmonically related to the receiver frequency range.  A little
experimenting will go a long way, and you will find that these modern switch
mode IC's are very easy to use.  I will look later and post some
representative ICs and development boards.

Regards,
Scott W7SVJ

-----Original Message-----
From: Ben Hall [mailto:kd5byb at gmail.com] 
Sent: Saturday, October 10, 2015 12:59 PM
To: Scott Johnson; n2lxm at juno.com; arc5 at mailman.qth.net
Subject: Re: [ARC5] Chinese switching converters

On 10/10/2015 2:56 PM, Scott Johnson wrote:
> might as well roll your own.  I would go with a much higher switching 
> frequency anyway.  There are eval board from the like of Analog 
> Devices, TI, and Maxim that will get you most of the way there.

Hi Scott,

Can you point us to any specific model numbers?  Looking at Maxim, they've
got at least 100 different power-related eval boards...

thanks much and 73,
ben, kd5byb