I’m looking for away to amplify the audio signal coming from my
computer sound cards output.
I’m trying to amplify the output voltage to 31 volts and the output
current to 1.5mA can someone recommend a small amplifier to do the job
or a circuit that will do this for me.

I'm just trying to do some testing.

tia sal2

I think you went wrong on the proportions. you probably mean 31 KVolts and
1.5µA. you can test it quite comfortably on your tits.

On Tue, 15 Jul 2008 00:11:44 +0200, jer0en wrote:

I think you went wrong on the proportions. you probably mean 31 KVolts
and 1.5µA. you can test it quite comfortably on your tits.

That made me laugh hahahhaha becareful you don't want to singe your
nips ;-) no the specification are correct
output voltage 27 Volts to 31 Volts (from 54 Volts Peak-Peak, to 62 Volts
Peak-Peak). and
Output Current at : 1.0to 1.5 milliamps

I had no idea that 1.5mA would be a peak value. in that case I would suggest
to increase voltage to 62 Kvolts and decrease current to 0.75 µA, which is
also closer to safe standard values as used by other electrical LMRs.

LMR = large mammel restraint

On Mon, 14 Jul 2008 14:59:54 -0700 (PDT), simplesal
wrote:

I’m looking for away to amplify the audio signal coming from my
computer sound cards output.
I’m trying to amplify the output voltage to 31 volts and the output
current to 1.5mA can someone recommend a small amplifier to do the job
or a circuit that will do this for me.

I'm just trying to do some testing.

tia sal2

A small audio amp, maybe even the one in your computer's speakers,
with one speaker replaced by a "70 volt" audio transformer, connected
backwards, to serve as a step-up transformer.

On Mon, 14 Jul 2008 14:59:54 -0700 (PDT), simplesal
wrote:

I’m looking for away to amplify the audio signal coming from my
computer sound cards output.
I’m trying to amplify the output voltage to 31 volts and the output
current to 1.5mA can someone recommend a small amplifier to do the job
or a circuit that will do this for me.

I'm just trying to do some testing.

---
31 volts * 1.5mA is 46.5 milliwatts, so if your sound card puts out
more than that just connect a transformer to it with the turns ratio
selected to give the output voltage you want into the load.


JF

John Fields wrote:

On Mon, 14 Jul 2008 14:59:54 -0700 (PDT), simplesal
wrote:

I’m looking for away to amplify the audio signal coming from my
computer sound cards output.
I’m trying to amplify the output voltage to 31 volts and the output
current to 1.5mA can someone recommend a small amplifier to do the job
or a circuit that will do this for me.

I'm just trying to do some testing.

---
31 volts * 1.5mA is 46.5 milliwatts, so if your sound card puts out
more than that just connect a transformer to it with the turns ratio
selected to give the output voltage you want into the load.

That would be a simple solution but try finding such a transformer these
days.

Graham

On Tue, 15 Jul 2008 13:21:03 +0100, Eeyore
wrote:



John Fields wrote:

On Mon, 14 Jul 2008 14:59:54 -0700 (PDT), simplesal
wrote:

I’m looking for away to amplify the audio signal coming from my
computer sound cards output.
I’m trying to amplify the output voltage to 31 volts and the output
current to 1.5mA can someone recommend a small amplifier to do the job
or a circuit that will do this for me.

I'm just trying to do some testing.

---
31 volts * 1.5mA is 46.5 milliwatts, so if your sound card puts out
more than that just connect a transformer to it with the turns ratio
selected to give the output voltage you want into the load.

That would be a simple solution but try finding such a transformer these
days.

---
Wind it.

JF

John Fields wrote:

Eeyore wrote:
John Fields wrote:
On Mon, 14 Jul 2008 14:59:54 -0700 (PDT), simplesal
wrote:

I’m looking for away to amplify the audio signal coming from my
computer sound cards output.
I’m trying to amplify the output voltage to 31 volts and the output
current to 1.5mA can someone recommend a small amplifier to do the job
or a circuit that will do this for me.

I'm just trying to do some testing.

---
31 volts * 1.5mA is 46.5 milliwatts, so if your sound card puts out
more than that just connect a transformer to it with the turns ratio
selected to give the output voltage you want into the load.

That would be a simple solution but try finding such a transformer these
days.

---
Wind it.

I've been known to but damn do my fingers hurt afterwards (no machine you
see).

Grahama

On Tue, 15 Jul 2008 02:56:20 GMT, sal2 wrote:

On Tue, 15 Jul 2008 00:11:44 +0200, jer0en wrote:

I think you went wrong on the proportions. you probably mean 31 KVolts
and 1.5µA. you can test it quite comfortably on your tits.

That made me laugh hahahhaha becareful you don't want to singe your
nips ;-) no the specification are correct
output voltage 27 Volts to 31 Volts (from 54 Volts Peak-Peak, to 62 Volts
Peak-Peak). and
Output Current at : 1.0to 1.5 milliamps

With those requirements I would suggest to connect a simple mains
transformer, as found in many wall wards, in reverse to the
speaker output of your soundcard.
(You will need the old fashioned, 'heavy' type, not a modern
light weight switcher type for that.)

Open it to get access to the bare transformer inside (you don't
need the rectifiers and capacitors). Connect the low voltage
wires to your sound card. Use the 'mains' wires as output.

Simply set the 'volume control' on your PC such, that you get
some 31 volt for output.

--
Kind regards,
Gerard Bok

output voltage 27 Volts to 31 Volts (from 54 Volts Peak-Peak, to 62 Volts
Peak-Peak). and
Output Current at : 1.0to 1.5 milliamps

The output transformer is a good idea since the maximum power is just
46.5mW for a square wave signal, the problem is what frequency range
do you want handle on that output?

Tranformers have different bandwidths due to their construction
characteristics.

If the signal you want to handle with it is a complex wave (not a
simple sinusoidal one), computing the high frequency limit of the
transformer's bandwidth consider the signal's harmonics too.

Massimo