help peltier module

[mamathi]

i am planning on making a water bottle dispenser using petlier module of 12v
and i gave a supply of 12v battery
i am new to this scope such that i have no idea about electronics and iam having some confusion whether to use h bridge or mosfets for reversing the polarity of the source supplied to the petlier
pls help me

 

[danadak]

Why reversing polarity ? You heating and cooling depending on a
choice ?

H Bridge is excellent way of doing polarity reversal. Or DPDT relay.
What is the current needed for your Peltier ? How do you want to
reverse polarity, a switch, temperature, meteorite impact.......?

Are you planning on building the circuit yourself or want a finished
out of the box solution ?

Regards, Dana.