step down the current

You don't reduce current... you reduce voltage with a transformer.

The current is determined by the load (circuit).

What is this current going through? If it was a simple resistor, you could connect 10 of the resistors in series...that would reduce the current.

You can reduce the current by using a transformer. Step the voltage up not down. This is how electricity is reticulated.

You are WAY out of line for this person's question and level of understanding and your explanation is not covering your comment fully either.....the rest of us know what you mean, but it has nothing to do with the mind set of the questioner at this time.

"KISS" is an acronym you need to learn and use in such areas....

You'll have to explain more about what you're trying to do.

Del is right - a transformer is not what you need here - increasing the resistance will reduce the current.

Spell out the full problem. (Is it homework?)

Morning Guys,

They are right, the circuit draws what it needs to operate. You can fuse it for protection, but thats all. If you add resistance you drop voltage across the resistor.

If the voltage is higher than you require, you can add resistance to drop the voltage and give you the current you seek.

Example: If the circuit needs 6 volts at .06 amps you need 100 0hms.

If the voltage is 12 volts, you get 12v/.06amps = 200 Ohms.

You add 100 Ohms in series, using the right wattage resistor.

Good luck,

James

If all is working correctly and the load demands 5 Amps at the voltage available there is nothing you can do. The whole circuit will have to be re-designed. Take along look at the application and then, re-think your requirements. Let the people here know what it is you are trying to do.

DC current? You want just to to measure it? Use Centuries old SHUNT.

Or an Emitter follower Circuit with Precision Resistors giving yu the Volt Drops - Messy!

AC current also for measuring only -- you are better off with a Current Transformer-but you do not want it . Shunt also could do.

Want full Isolation? Try Hall effect Sensors + 4>20 ma Transmitter. Big mess!

What IS your problem?

Question is not clear.

In which Cct you need to decrease current & why?

Details please