[sdiy] Favorite generic audio amp and buffer question

[Bob Weigel]

TDA2030 is available super cheap some places and for small power apps 
you don't have to heat sink it with the to220 or for a little more just 
one of those clip on heat sinks for your app maybe. They have only 5 
pins so a lot less complexity.   -Bob

John Luciani wrote:

> On 1/29/07, Tom Arnold <xyzzy at sysabend.org> wrote:
>
>> A quick second question is probably an opinion question.  I'm adding a
>> line-out to a toy that uses a TA7206AP ( thats a blast from the past! 
>> ).  On
>> the one hand I'm kinda tempted to just tack the new line-out jack 
>> onto the
>> "In" lead of the audio IC, but I do have a little paranoia and was 
>> thinking
>> of adding a simple buffer just to protect the sound generators in 
>> front of
>> the audio IC.  Any suggestions on doing this single-ended?  I only 
>> have one
>> supply rail in this beastie.  I suppose I could just run it through 1 k
>> resistor also.  That would probably provide the protection I think I 
>> need.
>
>
> Why not just use one diode to clamp to Vcc, one to clamp to gnd and
> a series resistor to limit the current?
>
> (* jcl *)
>