# Current amplify 500 Vac/100 mA to 500 Vac/5 A.

#### Kim-S9

Joined Feb 18, 2018
5
I need to amplify a low current (100mA) voltage signal to a higher current without changing the voltage. The voltage output operates a machine that requires 5A to work. The voltage is approximately 500V A.C
Kindly help me with a circuit that can enable me archive this or something close to this.
Thank you!

#### WBahn

Joined Mar 31, 2012
26,398
How is the first signal supposed to control the machine? Is it on-off, or some other relationship?

#### crutschow

Joined Mar 14, 2008
26,968
State the exact voltage, frequency, and current characteristics of both the signal and the load.

#### Kim-S9

Joined Feb 18, 2018
5
State the exact voltage, frequency, and current characteristics of both the signal and the load.
The exact voltage is 502volts, frequency is 60hertz the current(s) characteristics in both is A.C

#### crutschow

Joined Mar 14, 2008
26,968
So the load requires about 2500 watts which will require some serious amplification.
What power do you have available?

#### Kim-S9

Joined Feb 18, 2018
5
The exact voltage is 502volts, frequency is 60hertz the current(s) characteristics in both is A.C
Currently i have 50.2watts(502v ×0.1A)

So the load requires about 2500 watts which will require some serious amplification.
What power do you have available?
Yes, currently i have 50.2watts i.e (0.1A×502V)

Last edited by a moderator:

#### crutschow

Joined Mar 14, 2008
26,968
Yes, currently i have 50.2watts i.e (0.1A×502V)
I mean what mains power is available to provide the more than 2500 watts the amp will need.

#### Kim-S9

Joined Feb 18, 2018
5
So the load requires about 2500 watts which will require some serious amplification.
What power do you have available?
Kindly, i don't get the statement well.

I mean what mains power is available to provide the more than 2500 watts the amp will need.
Kindly, i don't get the statement well please.

Last edited by a moderator:

#### crutschow

Joined Mar 14, 2008
26,968
Kindly, i don't get the statement well please.
You need a power source to power the amp to generate the 2500W for your machine.
That typically is the AC main's power
What power do you have available?

#### Kim-S9

Joined Feb 18, 2018
5
You need a power source to power the amp to generate the 2500W for your machine.
That typically is the AC main's power
What power do you have available?
Ok, i get it. I have 1250W

Ok, i get it. I have 1250W
What i needed is a circuit that can enable me archive 2500W to run the machine from the 502V and 100mA

Last edited by a moderator:

#### Alec_t

Joined Sep 17, 2013
11,997
I have 1250W
So how do you think you will get 2500W from any circuit? Fame and fortune await if you find a way .

#### crutschow

Joined Mar 14, 2008
26,968
Mother nature (and the energy conservation law of physics) does not let you generate 2500W from a 1250W source.
You need a source of at least 2500W.

#### BobaMosfet

Joined Jul 1, 2009
1,614