want to make a simple class a amp

  • Thread starter Matt2 - Amstereo
  • Start date
M

Matt2 - Amstereo

Guest
hi, i need to make (or obtain) a small class a amp, good for 1mhz.
between 3 - 5 watts would be sufficient, up to 10watts would be good, if
easy enough. my input is about 100mw.

i've looked at lots of websites, but i end up in the audio amp sections.

circuit diagrams + components list would be useful (dickies down the
road and jaycar 30mins away), though if one can be made cheap enough,
i'd perfer to have someone else put it together, and i pay somthign for
time etc.
thanks.
 
"Matt2 - Amstereo" <amstereo@Toptus.com.au> wrote


hi, i need to make (or obtain) a small class a amp, good for 1mhz.
between 3 - 5 watts would be sufficient, up to 10watts would be good, if
easy enough. my input is about 100mw.

***** Gee ,wow,an amplifier for one milli Hz,that's real VLF country!!!

Brian Goldsmith.
 
"Matt2 - Amstereo" <amstereo@ToptusDOTcomDOTau> wrote in message
news:41d6ca2b$0$3844$afc38c87@news.optusnet.com.au...
hi, i need to make (or obtain) a small class a amp, good for 1mhz.
between 3 - 5 watts would be sufficient, up to 10watts would be good, if
easy enough. my input is about 100mw.

i've looked at lots of websites, but i end up in the audio amp sections.

circuit diagrams + components list would be useful (dickies down the
road and jaycar 30mins away), though if one can be made cheap enough,
i'd perfer to have someone else put it together, and i pay somthign for
time etc.
thanks.
Click to expand...
What, you can't use a search engine? I just used Altavista and got plenty of
hits. Go buy the ARRL handbook and have a nice read, you'll learn plenty of
good stuff there.

Ken
 
"Matt2 - Amstereo" <amstereo@ToptusDOTcomDOTau> wrote in message
news:41d6ca2b$0$3844$afc38c87@news.optusnet.com.au...
hi, i need to make (or obtain) a small class a amp, good for 1mhz. between
3 - 5 watts would be sufficient, up to 10watts would be good, if easy
enough. my input is about 100mw.

i've looked at lots of websites, but i end up in the audio amp sections.

circuit diagrams + components list would be useful (dickies down the road
and jaycar 30mins away), though if one can be made cheap enough, i'd
perfer to have someone else put it together, and i pay somthign for time
etc.
Click to expand...
**Look for a decent and stable MOSFET 50 Watt amp. Bias it into Class A and
lower the rail Volts. Why you would want to build a Class A amp with a
bandwidth to 1 MHz (I assume you made a typo), is beyond any rational
comprehension. Class A is both completely unnecessary and wasteful. 1 Mhz is
just asking for trouble (stability-wise), unless your not thinking about
audio reproduction.


--
Trevor Wilson
www.rageaudio.com.au
 
"Trevor Wilson"

**Look for a decent and stable MOSFET 50 Watt amp. Bias it into Class A
and lower the rail Volts. Why you would want to build a Class A amp with a
bandwidth to 1 MHz (I assume you made a typo), is beyond any rational
comprehension. Class A is both completely unnecessary and wasteful. 1 Mhz
is just asking for trouble (stability-wise), unless your not thinking
about audio reproduction.
Click to expand...

* The useless mental retard ( "Matt2 - Amstereo" ) is a wannabe DJ.

Since no radio station will give him a job - he is going on the air all
alone.

Damn what the law says.



.............. Phil
 
**Look for a decent and stable MOSFET 50 Watt amp. Bias it into Class A and
lower the rail Volts. Why you would want to build a Class A amp with a
bandwidth to 1 MHz (I assume you made a typo), is beyond any rational
comprehension. Class A is both completely unnecessary and wasteful. 1 Mhz is
just asking for trouble (stability-wise), unless your not thinking about
audio reproduction.
Click to expand...
I'm needing 1Mhz because thats the AM broadcast band, and i'm
experimenting with different ways of getting a signal to TX to a usable
distance. I assumed class a would be the easiest way to get 1Mhz,
because of the design being really limited by power consumption, i need
to boost 100mw up to a more usable number to feed in to a class A audio
amplier. its for experimentation purposes. if I feed the 100mw in to the
amp (input connection) and turn the volume pot all the way up with a
bare lead running out from the +ive connection, i get an increase (which
isn't that much really, but should increase a fair bit with higher input
power. its to see what happens when I use an audio amp as an RF amp.
 
Phil Allison threw up:

Damn what the law says.
Click to expand...
and you've never taped a tv show, recorded a radio broadcast, photo
copied written text / images, driven over the speed limit (even by
1KM/H),downloaded am mp3
 
"Matt2 - Amstereo" = DJ moron !!!!
Phil Allison threw up:

Damn what the law says.

and you've never taped a tv show, recorded a radio broadcast, photo copied
written text / images, driven over the speed limit (even by
1KM/H),downloaded am mp3
Click to expand...


** LISTEN YOU DOPEY FUCKWIT !!!!!!!!!!!!!

You will be caught and punished.

You are an UTTER ASS !!!!!!!!!!!

Do NOT expect any honest person the help you !!!!!!!

That is ASININE !!!!!




.............. Phil
 
"Trevor Wilson" <trevor@SPAMBLOCKrageaudio.com.au> wrote


"Matt2 - Amstereo" <amstereo@optus.com.au> wrote

hi, i need to make (or obtain) a small class a amp, good for 1mhz. between
3 - 5 watts would be sufficient, up to 10watts would be good, if easy
enough. my input is about 100mw.

i've looked at lots of websites, but i end up in the audio amp sections.

circuit diagrams + components list would be useful (dickies down the road
and jaycar 30mins away), though if one can be made cheap enough, i'd
perfer to have someone else put it together, and i pay somthign for time
etc.
Click to expand...
**Look for a decent and stable MOSFET 50 Watt amp. Bias it into Class A and
lower the rail Volts. Why you would want to build a Class A amp with a
bandwidth to 1 MHz (I assume you made a typo), is beyond any rational
comprehension. Class A is both completely unnecessary and wasteful. 1 Mhz is
just asking for trouble (stability-wise), unless your not thinking about
audio reproduction.


**** No Trevor,the moron wants to build an amplifier that will amplify AT 1
MHz (he didn't make a typo,he just doesn't know),he has this thing about
broadcasting on the AM band.He lives in Brisbane.

Brian Goldsmith.
 
"Matt2 - Amstereo" <amstereo@optus.com.au> wrote in message
news:41d78bf8$0$9355$afc38c87@news.optusnet.com.au...

**Look for a decent and stable MOSFET 50 Watt amp. Bias it into Class A
and
lower the rail Volts. Why you would want to build a Class A amp with a
bandwidth to 1 MHz (I assume you made a typo), is beyond any rational
comprehension. Class A is both completely unnecessary and wasteful. 1 Mhz
is
just asking for trouble (stability-wise), unless your not thinking about
audio reproduction.
Click to expand...
I'm needing 1Mhz because thats the AM broadcast band, and i'm
experimenting with different ways of getting a signal to TX to a usable
distance. I assumed class a would be the easiest way to get 1Mhz,
because of the design being really limited by power consumption, i need
to boost 100mw up to a more usable number to feed in to a class A audio
amplier. its for experimentation purposes. if I feed the 100mw in to the
amp (input connection) and turn the volume pot all the way up with a
bare lead running out from the +ive connection, i get an increase (which
isn't that much really, but should increase a fair bit with higher input
power. its to see what happens when I use an audio amp as an RF amp.


***** This moron is deranged or is a perfect troll.

Brian Goldsmith.
 
"Brian Goldsmith"
**** No Trevor,the moron wants to build an amplifier that will amplify AT
1
MHz (he didn't make a typo,he just doesn't know),he has this thing about
broadcasting on the AM band.He lives in Brisbane.
Click to expand...


** Ipswich - according to its recent postings.

Please explain .......





............. Phil
 
"Matt2 - Amstereo" <amstereo@ToptusDOTcomDOTau> wrote in message
news:41d78bf8$0$9355$afc38c87@news.optusnet.com.au...
**Look for a decent and stable MOSFET 50 Watt amp. Bias it into Class A
and lower the rail Volts. Why you would want to build a Class A amp with
a bandwidth to 1 MHz (I assume you made a typo), is beyond any rational
comprehension. Class A is both completely unnecessary and wasteful. 1 Mhz
is just asking for trouble (stability-wise), unless your not thinking
about audio reproduction.

I'm needing 1Mhz because thats the AM broadcast band, and i'm
experimenting with different ways of getting a signal to TX to a usable
distance. I assumed class a would be the easiest way to get 1Mhz, because
of the design being really limited by power consumption, i need to boost
100mw up to a more usable number to feed in to a class A audio amplier.
its for experimentation purposes. if I feed the 100mw in to the amp (input
connection) and turn the volume pot all the way up with a bare lead
running out from the +ive connection, i get an increase (which isn't that
much really, but should increase a fair bit with higher input power. its
to see what happens when I use an audio amp as an RF amp.
Click to expand...
**What you are planning is highly illegal. Class A is COMPLETELY unnecessary
for your (illegal) purpose.


--
Trevor Wilson
www.rageaudio.com.au
 
"Matt2 - Amstereo" <amstereo@ToptusDOTcomDOTau> wrote in message
news:41d79ba9$0$5058$afc38c87@news.optusnet.com.au...
Phil Allison threw up:

Damn what the law says.

and you've never taped a tv show, recorded a radio broadcast, photo copied
written text / images, driven over the speed limit (even by
1KM/H),downloaded am mp3
Click to expand...
**Are you aware of the difference between breaking the law (aka: A driving
offence) and a CRIMINAL offence. What you are contemplating is a criminal
offence. You will be caught and punished.


--
Trevor Wilson
www.rageaudio.com.au
 
"Matt2 - Amstereo" <amstereo@ToptusDOTcomDOTau> wrote in message
news:41d6ca2b$0$3844$afc38c87@news.optusnet.com.au...
hi, i need to make (or obtain) a small class a amp, good for 1mhz. between
3 - 5 watts would be sufficient, up to 10watts would be good, if easy
enough. my input is about 100mw.

i've looked at lots of websites, but i end up in the audio amp sections.

circuit diagrams + components list would be useful (dickies down the road
and jaycar 30mins away), though if one can be made cheap enough, i'd
perfer to have someone else put it together, and i pay somthign for time
etc.
thanks.
Click to expand...
Why dont you just get a HF (not UHF) CB and use that as your amplifier ?

That way you are using legal bands, and you can talk to the masses,
You will become famous, do it now.
 
Although it is a bit hard to tell from his post, it seems like the OP is
intending to operate a xmitter of up to 10w on the AM broadcast band - if this
is his intention then he needs to be told that this is NOT a good idea - and
could well result in an unwanted Court attendance.

If the OP could let us know what he wants to achieve, as opposed to his
proposed solution, then some useful suggestions might be given.

David

Ken Taylor wrote:

What, you can't use a search engine? I just used Altavista and got plenty of
hits. Go buy the ARRL handbook and have a nice read, you'll learn plenty of
good stuff there.

Ken
Click to expand...
 
"quietguy"
Although it is a bit hard to tell from his post, it seems like the OP is
intending to operate a xmitter of up to 10w on the AM broadcast band - if
this
is his intention then he needs to be told that this is NOT a good idea -
and
could well result in an unwanted Court attendance.
Click to expand...

** Nah - the case would never go to court.

The cops never arrest obvious mental retreads.

They shoot them and then put a knife in their hands.




.............. Phil
 
Hey Matt,

Isn't it funny that we have so many smart people on the NG who can offer
very useful information, yet can be so stupid when it comes to exchanging
information? From their posts, its obvious that they are book smart and 'by
the law' sort of characters, ya know the kind im talking about...don't ya
just hate law abiding citizens :)

Heres some useful piece of information, if you use it to break the law then
good luck to you and your adventures :)

My advise is fuck the authorities, you may very well be telling the truth
and simply want to perform some experiments, I cant prove it either way so
heres what ya do, visit a search engine and im sure you'll find what your
looking for, a good tip, go through at least 5 - 10 pages of search results
and you'll get what your looking for. Also vary your search terms and use
quotes for exact matches, i.e.. "class a amp" "class a amplifier" make your
own, diy etc....

A lot of search results are 'trimmed back' but the results will be there ;-)
If you think im bullshitting, go to the MSN search engine and type in
'migrating from windows to linux' and you'll get search results of the
'migrating linux to windows' kind. Never trust your search results, use
different engines and new ones. Clusty is quite good. clusty.com

You can also try emailing web sites on further resources, depends on how
desperate you are for the info.

Good luck mate.


"Fred Ferd" <fred@ferd.com> wrote in message
news:41d7cffa$1@news.comindico.com.au...
"Matt2 - Amstereo" <amstereo@ToptusDOTcomDOTau> wrote in message
news:41d6ca2b$0$3844$afc38c87@news.optusnet.com.au...
hi, i need to make (or obtain) a small class a amp, good for 1mhz.
between 3 - 5 watts would be sufficient, up to 10watts would be good, if
easy enough. my input is about 100mw.

i've looked at lots of websites, but i end up in the audio amp sections.

circuit diagrams + components list would be useful (dickies down the road
and jaycar 30mins away), though if one can be made cheap enough, i'd
perfer to have someone else put it together, and i pay somthign for time
etc.
thanks.

Why dont you just get a HF (not UHF) CB and use that as your amplifier ?

That way you are using legal bands, and you can talk to the masses,
You will become famous, do it now.
Click to expand...
 
"Phil Allison" <philallison@tpg.com.au> wrote in message
news:33q9tnF43u16iU2@individual.net...
The cops never arrest obvious mental retreads.

They shoot them and then put a knife in their hands.




............. Phil
Click to expand...
"mental retreads" - where the boring old fart Phil Allison posts the same
repeated garbage over and over again.

Cheers,
Alan
 
Heres some useful piece of information, if you use it to break the law
then good luck to you and your adventures :)

My advise is fuck the authorities, you may very well be telling the truth
and simply want to perform some experiments, I cant prove it either way so
heres what ya do, visit a search engine and im sure you'll find what your
looking for, a good tip, go through at least 5 - 10 pages of search
results and you'll get what your looking for. Also vary your search terms
and use quotes for exact matches, i.e.. "class a amp" "class a amplifier"
make your own, diy etc....
Click to expand...
Absolutely not enough for what he wants.


All he wants to do is test AM vs FM. why not use CB bands for this ?


A lot of search results are 'trimmed back' but the results will be there
;-) If you think im bullshitting, go to the MSN search engine and type in
'migrating from windows to linux' and you'll get search results of the
'migrating linux to windows' kind. Never trust your search results, use
different engines and new ones. Clusty is quite good. clusty.com

You can also try emailing web sites on further resources, depends on how
desperate you are for the info.

Good luck mate.


"Fred Ferd" <fred@ferd.com> wrote in message
news:41d7cffa$1@news.comindico.com.au...

"Matt2 - Amstereo" <amstereo@ToptusDOTcomDOTau> wrote in message
news:41d6ca2b$0$3844$afc38c87@news.optusnet.com.au...
hi, i need to make (or obtain) a small class a amp, good for 1mhz.
between 3 - 5 watts would be sufficient, up to 10watts would be good, if
easy enough. my input is about 100mw.

i've looked at lots of websites, but i end up in the audio amp sections.

circuit diagrams + components list would be useful (dickies down the
road and jaycar 30mins away), though if one can be made cheap enough,
i'd perfer to have someone else put it together, and i pay somthign for
time etc.
thanks.

Why dont you just get a HF (not UHF) CB and use that as your amplifier ?

That way you are using legal bands, and you can talk to the masses,
You will become famous, do it now.
Click to expand...
 
"Fred Ferd" <fred@ferd.com> wrote

.. Also vary your search terms
and use quotes for exact matches, i.e.. "class a amp" "class a amplifier"
make your own, diy etc....
Click to expand...
Absolutely not enough for what he wants.


All he wants to do is test AM vs FM. why not use CB bands for this ?


****** Because the moron wants to broadcast in the AM or FM band!!!!!!!Ask
him!!!

Brian Goldsmith
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top