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Author Topic: got a chip but i'm not sure if it is the lm386  (Read 1662 times)

Offline DubbleDutch

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got a chip but i'm not sure if it is the lm386
« on: April 06, 2008, 02:04:38 PM »
i got this chip here
but i'm not sure if it is a lm386 chip
i got the chip out of a AV car audio amplifier

it looks thesame as the lm386 chip so that is why i ask
the chip has this written on it

jrc4558
sh031127



thanx ;)
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Offline T3KN1K4L

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Re: got a chip but i'm not sure if it is the lm386
« Reply #1 on: April 06, 2008, 02:15:28 PM »
nope that is a 4558 chip, one moment, i will look it up, see what it is...  The 4558 series is Op-Amps, (Operational Amps) it may work for the sound mod, but you will have to do some testing with resistors, and such, since op-amps and sound amps function slightly differently...
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Offline *FuFa

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Re: got a chip but i'm not sure if it is the lm386
« Reply #2 on: April 06, 2008, 02:16:12 PM »
http://www.datasheetcatalog.net/de/datasheets_pdf/J/R/C/4/JRC4558.shtml

It's a dual amplifier, runs at 18v and is way out of the range the PSP can give.
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Offline DubbleDutch

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Re: got a chip but i'm not sure if it is the lm386
« Reply #3 on: April 06, 2008, 02:20:19 PM »
ok thank you guys :D

i managed to get the resistors out of the amplifier so that isnt going to be a problem
looks like i'll have to buy a lm386 then soon :)
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Offline T3KN1K4L

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Re: got a chip but i'm not sure if it is the lm386
« Reply #4 on: April 06, 2008, 02:21:09 PM »
The range says 4v to 18v...  So you could use it, since the 386 series has a range of 4v to 15v....
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Offline *FuFa

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Re: got a chip but i'm not sure if it is the lm386
« Reply #5 on: April 06, 2008, 02:21:50 PM »
Quote from: T3KN1K4L on April 06, 2008, 02:21:09 PM
The range says 4v to 18v...  So you could use it, since the 386 series has a range of 4v to 15v....

Oh I skipped over that part.
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Offline T3KN1K4L

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Re: got a chip but i'm not sure if it is the lm386
« Reply #6 on: April 06, 2008, 02:25:29 PM »
I've got a couple laying around, and would test it out for use with the sound mod, but not until I get the kinks out of my stereo sound mod chip...  dang things giving me headaches...
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Offline DubbleDutch

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Re: got a chip but i'm not sure if it is the lm386
« Reply #7 on: April 06, 2008, 02:27:35 PM »
Quote from: T3KN1K4L on April 06, 2008, 02:25:29 PM
I've got a couple laying around, and would test it out for use with the sound mod, but not until I get the kinks out of my stereo sound mod chip...  dang things giving me headaches...

ok thanx for your help :D
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