DC current amplifier

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wishbhonez

New Member

• Jan 24, 2007

• #1

hi,

how to i amplify a DC current from 5mA to 30mA, using only low cost materials?... tnx

 

D

dch222

Member

• Jan 24, 2007

• #2

You need to specify how the 5mA is being generated and what the 30mA is driving into. Voltages? What accuracy required?

 

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wishbhonez

New Member

• Jan 24, 2007

• #3

the supply is comming from a 250mA transformer but the 5mA is from a portion of my circuit. and i need to turn my 5mA to 30mA to drive my VCO.
it is a 5V supply.. can i use a 2n2222 transistor.?

 

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Russlk

New Member

• Jan 24, 2007

• #4

5 mA does not appear out of thin air, there has to be a source: What is it? What is the voltage required to push 30 mA into the VCO?

 

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wishbhonez

New Member

• Jan 24, 2007

• #5

what do you mean by a soruce??
my is source is a 5V, 250mA power supply.. the current coming from it is 200mA but after passing through a circuit network, it has drop down to 5mA. now i need to amplify it because my VCO needs at least 28mA and at most 35mA, it also runs at 5V!!..

 

R

Russlk

New Member

• Jan 24, 2007

• #6

Please post your circuit. It would appear that you don't need an amplifier, but how do you control the VCO?