hi..

i have already made hardware and there is no H-bridge used. the peltier module is connected with two PWMs i have to use 2 stage PID which has 2 outputs. the question is how it would like i have tried to make condition that if the current temperature is more or less than setpoint then switch PWM but it doesnt look like stable it switch and some how ocsillate. i have read about dead zone can any body give me more ideas how i can make it better or use and other condition?