Re: Audio amplifier circuit does not work as expected

Jamie (jamie_ka1lpa_not_valid_after_ka1lpa_@xxxxxxxxxxx) writes:
CHINGUETAS wrote:

Someone that already have armed and made work the audio amplifier
circuit of the book Getting Started in Electronics by Forrest Mims , p.
122.

Already I have made the following revisions:

1) Dual voltage supply checked
2) IC pins 741,386 checked (wrong 386)
3) Value components checked
4) Wiring checked

After this now I hear a strong ¡hummm¡ but not sounds from the
microphone.

Is this what I should hear or what I should hear?
Something missing?
Thanks in advance for any comment

Hmm, lets see, i don't think i have ESP..
i just can't seem to see how it would or
would not work!.
maybe if you would supply us a schematic of what your
using it could help greatly!

Well he did say what book it was from. And this is his second
thread on it, it would have been better if he'd just kept
to the same thread, and Forest Mims himself made a visit to the
newsgroup to say there were no errors in the schematic in the book.

Michael

.

Relevant Pages