How to amplify voltage?

Z

zalzon

Guest
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V. Just put a
resistor in the path of the current. But how to do the reverse? Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on the right
path?
 
"zalzon" <zalzonishappy@zalll.com> wrote in message
news:eek:asqj0th2b4sjha9mc652e53rdit34j1cj@4ax.com...
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V. Just put a
resistor in the path of the current. But how to do the reverse? Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on the right
path?


You are on the right track. Investigate what a transformer does and what
Click to expand...
causes it to do it.
See if you can discover what happens on the input to get a certain output.
You will probably see some new terms and be introduced to some new concepts
on your quest; bring your questions back here.

BTW: When you use a resistor as you describe you didn't reduce the voltage,
you just let some of it reside in a different place.
Tom
 
zalzon wrote:
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V. Just put a
resistor in the path of the current. But how to do the reverse? Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on the right
path?
Click to expand...
Apply the signal to an opamp with the appropriate feedback network and
a supply voltage higher than the desired output voltage.

--
John Popelish
 
"zalzon" <zalzonishappy@zalll.com> wrote in message
news:eek:asqj0th2b4sjha9mc652e53rdit34j1cj@4ax.com...
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V. Just put a
resistor in the path of the current. But how to do the reverse? Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on the right
path?
Click to expand...
google for "Switching Regulator".

I got this: http://www.national.com/appinfo/power/files/f5.pdf

Andyb
--
The above email address is whitelisted.
If I don't have your address already, I wont see your message.
 
"Marlboro" <ccon67@netscape.net> skrev i melding
news:e3fd5378.0409071349.4fec2cbb@posting.google.com...
zalzon <zalzonishappy@zalll.com> wrote in message
news:<oasqj0th2b4sjha9mc652e53rdit34j1cj@4ax.com>...
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V. Just put a
resistor in the path of the current. But how to do the reverse? Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on the right
path?

Yes, and remember that you can't take out more than what you put in,
is that the thumb rule? I means POWER_out <= POWER_in, the equal sign
"almost" never happen.
Click to expand...
Like to see any example when the power_out = power_in.
 
"Geir Klemetsen" <ugyldig@adresse.no> wrote in message
news:chndst$e34$1@services.kq.no...
"Marlboro" <ccon67@netscape.net> skrev i melding
news:e3fd5378.0409071349.4fec2cbb@posting.google.com...
zalzon <zalzonishappy@zalll.com> wrote in message
news:<oasqj0th2b4sjha9mc652e53rdit34j1cj@4ax.com>...
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V. Just put a
resistor in the path of the current. But how to do the reverse? Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on the right
path?

Yes, and remember that you can't take out more than what you put in,
is that the thumb rule? I means POWER_out <= POWER_in, the equal sign
"almost" never happen.

Like to see any example when the power_out = power_in.
Click to expand...
Power_out is ALWAYS equal to the power_in. The power out is just in a
different form. In the case of electronics circuits, there is usually an
increase in thermal energy for the drop in electrical energy. Mechanical
motion and emitted photons are other forms that power converted from
electrical energy can take.
 
"Marlboro" <ccon67@netscape.net> skrev i melding
news:e3fd5378.0409100845.25cbe41c@posting.google.com...
"Travis Hayes" <tmh-SPAMISSPICEDHAM@nerdshack.com> wrote in message
news:<2qciv1Ftq0gdU1@uni-berlin.de>...
"Marlboro" <ccon67@netscape.net> wrote in message
news:e3fd5378.0409091225.2db00091@posting.google.com...
"Travis Hayes" <tmh-SPAMISSPICEDHAM@nerdshack.com> wrote in message
news:<2q9m9qFtd3ojU1@uni-berlin.de>...
"Geir Klemetsen" <ugyldig@adresse.no> wrote in message
news:chndst$e34$1@services.kq.no...

"Marlboro" <ccon67@netscape.net> skrev i melding
news:e3fd5378.0409071349.4fec2cbb@posting.google.com...
zalzon <zalzonishappy@zalll.com> wrote in message
news:<oasqj0th2b4sjha9mc652e53rdit34j1cj@4ax.com>...
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC
or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V.
Just
put a
resistor in the path of the current. But how to do the
reverse?
Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on
the
right
path?

Yes, and remember that you can't take out more than what you put
in,
is that the thumb rule? I means POWER_out <= POWER_in, the
equal
sign
"almost" never happen.

Like to see any example when the power_out = power_in.

Power_out is ALWAYS equal to the power_in. The power out is just in
a
different form. In the case of electronics circuits, there is
usually
an

I doubt about that, where all matter came from?

If you're implying that all matter came from energy initially, then
where did all that energy come from?

Well, that's ABSOLUTELY an ASSUMPTION, and you MAYBE ABSOLUTELY
correct when saying "Power_out is ALWAYS equal to the power_in".

Cheer,
Click to expand...
After reading the tread, now I understand what Travis Hayes men with
"Power_out". For him it's the electrical power_out + thermal power_out. When
I'm talking about electrical circuits/devices, power_out is only the
electrical power_out. Especially voltage converters, amplifiers, an that
kind of things.
 
On Mon, 13 Sep 2004 00:47:48 +0200, "Geir Klemetsen"
<ugyldig@adresse.no> wrote:

step up dc voltage with a dc..to dc..converter..I frequently use a
5vdc to 12 v dc converter in my circuits..i think you can find a
range to suite your needs in a power components catalog..or on the
internet..

"Marlboro" <ccon67@netscape.net> skrev i melding
news:e3fd5378.0409100845.25cbe41c@posting.google.com...
"Travis Hayes" <tmh-SPAMISSPICEDHAM@nerdshack.com> wrote in message
news:<2qciv1Ftq0gdU1@uni-berlin.de>...
"Marlboro" <ccon67@netscape.net> wrote in message
news:e3fd5378.0409091225.2db00091@posting.google.com...
"Travis Hayes" <tmh-SPAMISSPICEDHAM@nerdshack.com> wrote in message
news:<2q9m9qFtd3ojU1@uni-berlin.de>...
"Geir Klemetsen" <ugyldig@adresse.no> wrote in message
news:chndst$e34$1@services.kq.no...

"Marlboro" <ccon67@netscape.net> skrev i melding
news:e3fd5378.0409071349.4fec2cbb@posting.google.com...
zalzon <zalzonishappy@zalll.com> wrote in message
news:<oasqj0th2b4sjha9mc652e53rdit34j1cj@4ax.com>...
I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC
or
whatever voltage level I want?

Is this something that is easy or hard to do?

I should be easy enough to reduce voltage from 20V to 5V.
Just
put a
resistor in the path of the current. But how to do the
reverse?
Step
up the voltage....

I'm thinking coils like a transformer or something. Am I on
the
right
path?

Yes, and remember that you can't take out more than what you put
in,
is that the thumb rule? I means POWER_out <= POWER_in, the
equal
sign
"almost" never happen.

Like to see any example when the power_out = power_in.

Power_out is ALWAYS equal to the power_in. The power out is just in
a
different form. In the case of electronics circuits, there is
usually
an

I doubt about that, where all matter came from?

If you're implying that all matter came from energy initially, then
where did all that energy come from?

Well, that's ABSOLUTELY an ASSUMPTION, and you MAYBE ABSOLUTELY
correct when saying "Power_out is ALWAYS equal to the power_in".

Cheer,

After reading the tread, now I understand what Travis Hayes men with
"Power_out". For him it's the electrical power_out + thermal power_out. When
I'm talking about electrical circuits/devices, power_out is only the
electrical power_out. Especially voltage converters, amplifiers, an that
kind of things.
Click to expand...
 
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