In article <362564A2.650B1B32@wcnet.org>, Joe Konecny <gmi@wcnet.org> wrote:
>I built an FM transmitter from a kit and it seems to work well. Can I
>connect both channels
>from my Sony Discman directly together so as to create a mono channel to
>run through the
>transmitter?
>
>Thanks for any info!
>Joe
---------------------------
You will want to isolate Left and Right from each other with either
huge resistor values and/or use an op-amp as an adder, or mixer, to
mix the two together. This is done with an op-amp:
10K pot
+---/\/\/\/\--+
| ccw ^ cw |
| | |
4.7uF 10K | +------+
left --|(--/\/\/\----+ . 7 |
CD-player 4.7uF 10K | 3|\-- +V |
right --|(--/\/\/\----+----|-\ 6 | 10uF
CA3130 2| >-----+----|(---- Xmttr
+--|+/4
| |/-- -V
| .
\
/ 4.7K
\
/
_|_
-
Make the feedback pot bigger to get more gain.
-Steve
--
-Steve Walz rstevew@armory.com "ftp://ftp.armory.com:/pub/user/rstevew"
-Electronics Site!! 1000 Files/50 Dirs!! "http://www.armory.com/~rstevew"
Europe:(Italy) "http://ftp.cised.unina.it/pub/electronics/ftp.armory.com"
Date: 15 Oct 1998 07:08:24 GMT
Original Subject: Re: Will this ruin my Discman?