Re: Reducing Source Voltage To Power Supply
- From: "Dave.H" <the1930s@xxxxxxxxxxxxxx>
- Date: Thu, 10 Jan 2008 08:43:50 -0800 (PST)
On Jan 11, 3:37 am, John Fields <jfie...@xxxxxxxxxxxxxxxxxxxxx> wrote:
On Thu, 10 Jan 2008 05:51:50 -0800 (PST), "Dave.H"
<the19...@xxxxxxxxxxxxxx> wrote:
I'm building a power supply for an 8 transistor radio, that originally
used 6 "D" cells, involving a rectifier bridge, filtering caps etc,
but there's on problem,which is I can't seem to find an AC transformer
outputting 6 volts that fits in the case I want to use. I have no
problem using a wall wart, but I can't find one of the correct
voltage. I have one rated at 9 VAC, outputting in the range of
12.5-13 VAC. Is there a way to halve this voltage with resistors
without generating too much heat?
---
You may want to consider something like one of these:
http://www.tamuracorp.com/clientuploads/pdfs/pg5.pdf
which you can get from Digi-Key.
In any case, how much current does the radio draw and what current
is your wall-wart rated for when it's outputting 9V?
--
JF
The wall wart is rated at 1 amp. Not sure what the current draw is.
.
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