hello everyone, i got a question:
I need to make a power supply to heat a heater, for that I need to use an arduino due, and use one of the analog pins (it´s like a built-in DAC) of this microcontroller, and draw voltage from that pin, with an external current source or something similar, I need power control the current that passes through the circuit controlled from arduino, controlling the voltage that I give it through the software, that is, I choose the voltage that I pass to the circuit with the arduino's analog pin and with this choice, I have to have a certain current that allows me to heat the heater resistance as much as I want. I need to give the resistor a power of 10W, and the resistance of the heater is 50Ω. so I need a current of approximately 400mA to pass through that resistance. How can I do this circuit? the main problem I've had so far is that the output current is always very small. any suggestions? thnks.
I need to make a power supply to heat a heater, for that I need to use an arduino due, and use one of the analog pins (it´s like a built-in DAC) of this microcontroller, and draw voltage from that pin, with an external current source or something similar, I need power control the current that passes through the circuit controlled from arduino, controlling the voltage that I give it through the software, that is, I choose the voltage that I pass to the circuit with the arduino's analog pin and with this choice, I have to have a certain current that allows me to heat the heater resistance as much as I want. I need to give the resistor a power of 10W, and the resistance of the heater is 50Ω. so I need a current of approximately 400mA to pass through that resistance. How can I do this circuit? the main problem I've had so far is that the output current is always very small. any suggestions? thnks.