OT:Amplifier(741)
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Posts: 46,084
Hello All,
I was wondering if you can help me.
Sorry for the off-topic. Does anyone of you have a simple circuit
that will amplify your voice using the 741 op-amp, a mic, and a
speaker.
Any help would be appreciated.
Thanks,
Frank G.
I was wondering if you can help me.
Sorry for the off-topic. Does anyone of you have a simple circuit
that will amplify your voice using the 741 op-amp, a mic, and a
speaker.
Any help would be appreciated.
Thanks,
Frank G.
Comments
A better low voltage audio power amplifier chip is the 386N, available
as an 8-dip and SMT. Circuits with various gains are shown in the Radio
Shack Semiconductor Reference Guide.
Dennis
Original Message
From: fwankg [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=viFLApdnDMGt8fpR4MEuaj7nD0dQ4v8QixvydT_rDX-vQoL4WtFxMTffNRyYmjUxiWfwoH4BHQ]fwankg@y...[/url
Sent: Tuesday, April 02, 2002 4:15 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] OT:Amplifier(741)
Hello All,
I was wondering if you can help me.
Sorry for the off-topic. Does anyone of you have a simple circuit
that will amplify your voice using the 741 op-amp, a mic, and a
speaker.
Any help would be appreciated.
Thanks,
Frank G.
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If you are going to the Rat-shack to buy the 386, you might also want
to check out one of Forrest Mims' "Engineer's Mini Notebooks."
Most 'Shacks have a stash of them in the discrete parts section. I'm
pretty sure that he published one called "IC Op Amp Projects", or
something like that. It should have plenty of example cicuits, and a
painless introduction to Op Amp theory & etc.
peter
Original Message
From: "Dennis P. O'Leary" <doleary@h...>
Date: Tuesday, April 2, 2002 7:41 pm
Subject: RE: [noparse][[/noparse]basicstamps] OT:Amplifier(741)
> Frank,
>
> A better low voltage audio power amplifier chip is the 386N, available
> as an 8-dip and SMT. Circuits with various gains are shown in the
> RadioShack Semiconductor Reference Guide.
>
> Dennis
http://www.national.com/pf/LM/LM386.html
Complete with circuit ideas.
Regards,
Ben.
--
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>
Original Message
> From: "Dennis P. O'Leary" <doleary@h...>
> Date: Tuesday, April 2, 2002 7:41 pm
> Subject: RE: [noparse][[/noparse]basicstamps] OT:Amplifier(741)
>
>> Frank,
>>
>> A better low voltage audio power amplifier chip is the 386N, available
>> as an 8-dip and SMT. Circuits with various gains are shown in the
>> RadioShack Semiconductor Reference Guide.
>>
>> Dennis
>
>
>
> To UNSUBSCRIBE, just send mail to:
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>
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>