Date:         Sat, 6 Dec 2003 09:04:43 -0600
Reply-To:     tom ring <taring@TARING.ORG>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         tom ring <taring@TARING.ORG>
Organization: Tippen Ringware
Subject:      Re: Making a 12v battery charger from a peecee power supply
In-Reply-To:  <BBF6BD07.2D14A%gnarlodious@earthlink.net>
Content-type: text/plain; charset=US-ASCII

And for the conservation minded, switchers are more efficient than a regular
charger, especially when under a light load.

tom

On 5 Dec 2003 at 22:53, Gnarlodious wrote:

> What Felder failed to mention is that this is no ordinary battery charger.
> This is a "Switched Mode" Power Supply. It doesn't have the huge heavy
> transformer but uses a small light transformer running at about 40kHz to
> transform the current.
> The frequency is controlled by a PWM chip that regulated the input and
> output by using Pulse Width Modulation. This means input voltage can be
> anywhere between 80 volts and 240 volts. No transformer overheating buzzing.
>
> A switching charger normally costs about $270, Felder is saying you can do
> it for about $25 if you're willing to play.
>
> -- Gnarlie

------
Tom Ring K0TAR, ex-WA2PHW  EN34hx
85 Westphalia GL Albert
96 Jetta GL The Intimidator
taring@taring.org

"It is better to go into a turn slow, and come out fast, than to go into a turn
fast
and come out dead." Stirling Moss