J
Jamie
Guest
Hello newsgroup,
I've been working with this circuit:
http://www.rason.org/Projects/icamps/icamps.htm
But I need to modify it slightly as the input will be two channels
mixed into a mono signal. (It needs to drive a phone patch FROM a
stereo signal) and I'm not real crazy about mixing voltages.
Here's what I have at this point:
http://www.geniegate.com/LM386N_Amplifier.png
It seemed to work well but I'm not sure if I have the polarity correct
on the two capacitors in the circuit.
Is it possible to use electrolytics in this manner?
Am I correct in assuming the capacitors will provide the required
isolation from the input signal? I'm not real crazy about casually mixing
power signals from different sources as the original circuit used. (in this
case, input will be line-level audio typically found from a "Tape Out." in
a home stereo) On the other hand, I don't want to spend the $$ in isolation
transformers.
On the same topic, will the two capacitors prevent the left side
from "driving" the right side or do I need resistors?
I do electronics as a novice hobby and am not particularly good at it, but I
must say, so far, I am *super* impressed with the LM386N, it's been driving
two small speakers (~20 ohm load) with the source from a portable CD player,
very low volume setting and it's still more then loud enough.
Hopefully someone can tell me a bit about capacitor coupling.
Thanks!
Jamie
--
http://www.geniegate.com Custom web programming
guhzo_42@lnubb.pbz (rot13) User Management Solutions
I've been working with this circuit:
http://www.rason.org/Projects/icamps/icamps.htm
But I need to modify it slightly as the input will be two channels
mixed into a mono signal. (It needs to drive a phone patch FROM a
stereo signal) and I'm not real crazy about mixing voltages.
Here's what I have at this point:
http://www.geniegate.com/LM386N_Amplifier.png
It seemed to work well but I'm not sure if I have the polarity correct
on the two capacitors in the circuit.
Is it possible to use electrolytics in this manner?
Am I correct in assuming the capacitors will provide the required
isolation from the input signal? I'm not real crazy about casually mixing
power signals from different sources as the original circuit used. (in this
case, input will be line-level audio typically found from a "Tape Out." in
a home stereo) On the other hand, I don't want to spend the $$ in isolation
transformers.
On the same topic, will the two capacitors prevent the left side
from "driving" the right side or do I need resistors?
I do electronics as a novice hobby and am not particularly good at it, but I
must say, so far, I am *super* impressed with the LM386N, it's been driving
two small speakers (~20 ohm load) with the source from a portable CD player,
very low volume setting and it's still more then loud enough.
Hopefully someone can tell me a bit about capacitor coupling.
Thanks!
Jamie
--
http://www.geniegate.com Custom web programming
guhzo_42@lnubb.pbz (rot13) User Management Solutions