I would like to ask a question =>Is there any way to reduce the amperage ?? ,, for example I've a transformator wich produce 4A and.. I want to reduce this value until 1A.
Amperage doesn’t work that way. Your circuit will draw whatever amperage it needs to function. If it’s more than the max amps, the circuit won’t work correctly.
Current (Amps) is a result of voltage and resistance.
Lower the voltage, and the current will reduce.
Increase the resistance, and the current will also reduce.
So what is connected to that transformer.
Leo..
Imadora:
I would like to ask a question =>Is there any way to reduce the amperage ?? ,, for example I've a transformator wich produce 4A and.. I want to reduce this value until 1A.
It is more accurate to say that your transformer can produce up to 4 amps.
The actual amount of current will depend on the device that is consuming the power. Having too many amps available is never a problem provided that the voltage is correct.
Having too few amps available would be a problem - for example connecting a device that needs 6 amps to your 4 amp transformer would probably cause the transformer to burn out.
...R
So at this way the only solution can be reducing the voltage or adding resistor wich are the same thing:
U=R*I=>I=U/R
Don't you agree for another way ??
Because unfortuntely my transfo products 4A and 24V for a stepper motor wich needs just1A and the whole of 24V
Your motor will draw what it needs from the transformer. The transformer will have spare capacity for several more motors. You have no need to, in this case, bother with trying to reduce the available amperage. The extra available amperage will not be used.
Imadora:
Because unfortuntely my transfo products 4A and 24V for a stepper motor wich needs just1A and the whole of 24V
If you had told us that up front ...
The current for a stepper motor is limited by adjusting the stepper motor driver. What stepper motor driver are you using?
Also. post a link to the datasheet for your stepper motor.
I've a bipolar stepper motor, and I'm going to use L298N as a driver.
Imadora:
I've a bipolar stepper motor, and I'm going to use L298N as a driver.
An L298 is NOT a stepper motor driver, and can't be current limited.
Leo..
Imadora:
I've a bipolar stepper motor, and I'm going to use L298N as a driver.
You need to post a link to the datasheet for your stepper motor. All advice must derive from the facts about the motor.
An L298 is a very poor choice for driving any stepper motor and it is quite impractical for many motors.
...R
If the motor is a low impedance stepper (the vast majority are these days), you will need a current driver like DRV8825, definitely not an L298