Hi all,
I have a peltier module which I would like to control such that it operates like 15 seconds cool, and other 15 seconds heating
I have a L298N , can I use that or Do I need to use a Mosfet ?
Inductor in series to the peltier element?
Which would serve me the best?
Hi,
Did you google peltier cell heat and cool control arduino
I would not use a L298N H-Bridge, they are very inefficient and you loose 2V when they are conducting.
Thanks.. Tom.... 
hyperinfinite:
Hi all,
I have a peltier module which I would like to control such that it operates like 15 seconds cool, and other 15 seconds heating
I have a L298N , can I use that or Do I need to use a Mosfet ?
Inductor in series to the peltier element?
Which would serve me the best?
By "cool" are turning the Peltier off, or reversing the current so it heats on the opposite plate and cools the first?
If you are suddenly reversing the current from one direction to the other, you need to study Peltier science a bit. Google will help. You need to allow time for the internal heat in the Peltier to stabilize. The diodes create internal heat just like any other diode and will continue to heat even though the current has reversed. The heat will quickly kill one or more diodes. And then the device won't work any more.
Paul
15 seconds cool, and other 15 seconds heating
What are the masses and thermal conductivities of the objects to be cooled/heated?
How many Watts do you expect the Peltier element to require?