I'm using peltier for heating a device from 90'c to 60'c ,vice versa for n cycles. I wanted to know how to control the current passing into the peltier. The peltier maximum current rating is 8A, i want to switch it between 6-8 A to get the desired value of temperature. Can anybody suggest a circuit to control the current flowing into the peltier. Suggestions are welcome.
Have a look at this older discussion: https://www.element14.com/community/message/134015/l/re-digital-currentvoltage-control#134015
I would suggest using a PWM capable microcontroller and a FET that can handle that amount of load. Microcontroller is preferred if you need some more complex algorithm / controller and or some interface to control the process manually on the go.