[Milsurplus] BC-611 power

[Richard Arland, W3OSS]

OK...gang....

Let's brainstorm this project so I can present some information to Dave and 
his undergrads.

What do we really want? Need? Why type of input voltage do we start with? 
Physical size? SMD or thru hole?

73 Rich

----- Original Message ----- 
From: "Bob Camp" <ham at cq.nu>
To: "J Forster" <jfor at quik.com>
Cc: <milsurplus at mailman.qth.net>
Sent: Wednesday, February 14, 2007 9:39 PM
Subject: Re: [Milsurplus] BC-611 power


|
| Hi
|
| I agree that a "simple" high voltage converter makes the most sense.
| One issue would be that there's a big difference in the design if it
| runs off of 1.2 volts than if it runs off of 12. The higher the input
| voltage the easier it's going to be to make the output voltage ....
|
| Bob
|
|
|
| On Feb 14, 2007, at 9:12 PM, J Forster wrote:
|
| >    From: "Richard Arland
| >
| > Hi John:
| >
| >  Thanks for the input. My thoughts were originally to have them make
| > separate
| >  dc-to-dc converters for each radio, but then, after reading your
| > post,
| > I
| >  think that maybe a generic converter might be a better idea. One that
| > would
| >  put out 1.5, 3, 6.3 & 12 V dc for filaments,
| >
| >
| > Actually, I did not suggest making filament voltages by conversion.
| > IMO,
| > it's pointless as most sets can be run on 1 to 8 dry cells (C or
| > D). No
| > converter is 100% efficient and why waste up to 50% of your battery
| > life
| > making useless heat?  It only makes sense if you are going to use a
| > car
| > battery or some such the primary power source.
| >
| > -John
| >
| >
|
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