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Chip Amps Amplifiers based on integrated circuits

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Old 24th April 2003, 01:48 PM   #1
fezz is offline fezz  United Kingdom
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Default excelent - new forum - time for another stupid question...

im building a gainclone (why still this name? it would be better called - 'really nice amplfier that i can sort of understand')

im using OPA541 chips - but they use a current limiting resistor - as my maximum current is lower then the chips maximum, do i need a resistor there - or should i just connect it to the output?
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Old 24th April 2003, 02:16 PM   #2
Philo is offline Philo  United States
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If your not worried about it (and you really shouldn't be) just solder the pin to the output pins. It works great.
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Old 24th April 2003, 03:25 PM   #3
fezz is offline fezz  United Kingdom
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great thanks, thats all i needed to know.

should be done soon now
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Old 26th April 2003, 03:57 PM   #4
Nuuk is offline Nuuk  United Kingdom
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Quote:
im building a gainclone (why still this name? it would be better called - 'really nice amplfier that i can sort of understand')
|Good point Fezz. After all we are all human beings (hopefully) but we are not clones. And some of the designs are quite different to the original Gaincards.

So what can we (collectively) call these little beasties if not chip amps?

What about EITEA (pronounced IT) standing for Easily Implemented Top End Amplifier? OK, not very good but what other suggestions are there?
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Old 26th April 2003, 04:03 PM   #5
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Default Re: excelent - new forum - time for another stupid question...

Quote:
Originally posted by fezz
im building a gainclone (why still this name? it would be better called - 'really nice amplfier that i can sort of understand')

im using OPA541 chips - but they use a current limiting resistor - as my maximum current is lower then the chips maximum, do i need a resistor there - or should i just connect it to the output?
It would be smart to put in a current limit, above the max current you need. That is to protect the chip, and is mucho cheaper than to have to put in a new one after an accidental short or overload.


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Old 3rd May 2003, 10:36 AM   #6
fezz is offline fezz  United Kingdom
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i am still thinking about the name, i dont htink it really helps being very tired.

as most other amplfiers we try and copy already have names, most come out as x clones - therefore it would be a gaincard clone be personally i feel that gaincard is a stupid name anyway.

looking at the design of it the amplfier is very simple, but it would not be wize to name it reffering to the fact that (almost) anyone can make it, as this takes away the fact that it also sounds very good.

unfortunatly the name 'zen' is already taken, this seems more applicable to the gainclone due to the small ammount of parts required in construction.

i suppose it could always be called JEEP (just enought essential parts)
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Old 3rd May 2003, 01:35 PM   #7
elizard is offline elizard  Canada
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Quote:
Originally posted by Nuuk


|Good point Fezz. After all we are all human beings (hopefully) but we are not clones. And some of the designs are quite different to the original Gaincards.

So what can we (collectively) call these little beasties if not chip amps?

What about EITEA (pronounced IT) standing for Easily Implemented Top End Amplifier? OK, not very good but what other suggestions are there?

EITEA sounds too much like IKEA ..
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Old 3rd May 2003, 02:30 PM   #8
Nuuk is offline Nuuk  United Kingdom
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Quote:
EITEA sounds too much like IKEA ..
Suggestion withdrawn immediately

JEEP is not bad. It's a difficult one which is why we haven't had many suggestions.
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Old 3rd May 2003, 03:14 PM   #9
fezz is offline fezz  United Kingdom
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i agree, we do need more suggestions, so i can stop trying to thinkof some - so far i have come up with Nephron, as they are small capilleries in the kidnies that filter the blood, although overlooked and small, not having them would result in death in about 10 minutes.

the same way any small change in the components of the amplifer vastly alters the sound.


i should stop trying to think of names
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Old 3rd May 2003, 03:15 PM   #10
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I have no idea about generic names for GC type amps, but my chip amp with supersymmetry has become known as METALAC- Mad Evil Twin of Alephx, Locked in the Attic as a Child...

(Apologies to Nelson Pass)
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