Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
need a source and information on a 288-5336 audio amplifier IC
27 views
Skip to first unread message
captainvi...@gmail.com
Dec 12, 2015, 7:25:57 PM12/12/15
to
I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a listing for this anywhere. Can anyone help? Thanks, Lenny
M Philbrook
Dec 12, 2015, 7:51:47 PM12/12/15
to
In article <c2293d2a-8564-4a03...@googlegroups.com>,
captainvi...@gmail.com says...
and do they have the middle legs bonded together from the
package?
I can give you a couple of numbers to look at to
comparson.
LM380, LM377
etc..
Spregue made some direct replacements etc..
Jamie
captainvi...@gmail.com says...
>
> I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a
listing for this anywhere. Can anyone help? Thanks, Lenny
are these DIP ic's ? and if so, what pin count are they
> I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a
listing for this anywhere. Can anyone help? Thanks, Lenny
and do they have the middle legs bonded together from the
package?
I can give you a couple of numbers to look at to
comparson.
LM380, LM377
etc..
Spregue made some direct replacements etc..
Jamie
N_Cook
Dec 13, 2015, 4:01:19 AM12/13/15
to
On 13/12/2015 00:25, captainvi...@gmail.com wrote:
> I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a listing for this anywhere. Can anyone help? Thanks, Lenny
>
Take some readings off the pins of the working one, while it still is,
> I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a listing for this anywhere. Can anyone help? Thanks, Lenny
>
and try repinning some modern replacement to the shorted one.
On removing that , maybe some other number on the underside of it.
0 new messages