Resistor question...again

[Benbojangles]

hey

I'm attempting to limit the current on a circuit.

I'm using a 9volt/2600mah battery but I am trying to limit the output current to 125ma.

Do I simply use a 10 Ohm resistor in series? Or, is there some other mystical solution to this whole electrical idea?

I appreciate your advice

Kind regards.

Added after 4 hours 18 minutes:

anyone?

 

[thuvu]

The current depends on the load that you will use. Please be more specific about the load.

The 10Ohm resistor wont work.

 

[my_books]

hey

I'm attempting to limit the current on a circuit.

I'm using a 9volt/2600mah battery but I am trying to limit the output current to 125ma.

Do I simply use a 10 Ohm resistor in series? Or, is there some other mystical solution to this whole electrical idea?

I appreciate your advice

Kind regards.

Added after 4 hours 18 minutes:

anyone?

How many watts the load needs ?

 

[VVV]

You should use an electronic current limiter, else you will lose too much voltage in normal operation.
For instance, to limit the current at 125mA you need 9/0.125=72 ohm.

But if the load normally draws 100mA, then you lose 0.1*72=7.2V, leaving you with 1.8V to do the job.

Resistors are never good when you have to limit the current to a level close to the normal operating point.

 

[Benbojangles]

Thankyou for your help & advice.

Through all of your fine advice and cohesion, we have been able to work together to solve the problem. May God bless you all & sleep peacefully.

Yours Sincerely.

 

[FvM]

An electronic fuse may be the mystical solution you asked for, but also a Polyswitch PTC fuse may work. It depends on your specification for normal operation and maximum tolerated short circuit current, both yet unknown.

 

[Khabree]

hey

I'm attempting to limit the current on a circuit.

I'm using a 9volt/2600mah battery but I am trying to limit the output current to 125ma.

Do I simply use a 10 Ohm resistor in series? Or, is there some other mystical solution to this whole electrical idea?

I appreciate your advice

Kind regards.

Added after 4 hours 18 minutes:

anyone?

You did not mention the load and voltage required for?