Hi . guys . i've been working on a project in order to heat a thermal box using 2 peltier cells in parallel.
He's the circuit proposed. when i simulate, as long as my input( 0 to 10V ) maintain 3.8v up to 5v , i current control the cell. Vth=4V
There's a current measure through the 0.1ohm resistance in which voltage drop goes into the controller for current monitoring
problem: i wish i'd have up to 4Amp and 11V drop over the cell when the mosfet is fully "on". However, i'm facing a proporcional 1:1 increase in current and voltage . For example: 5V input generates 5,5Amps and 6V over the cell. that's too much current the resistor could burn! and voltage drop across resistor is in agreement 0,54V
when connect the pair of cells on a separated power supply varying voltage until 10V creates 4Amps. why?!..
thanks in advance
He's the circuit proposed. when i simulate, as long as my input( 0 to 10V ) maintain 3.8v up to 5v , i current control the cell. Vth=4V
There's a current measure through the 0.1ohm resistance in which voltage drop goes into the controller for current monitoring
problem: i wish i'd have up to 4Amp and 11V drop over the cell when the mosfet is fully "on". However, i'm facing a proporcional 1:1 increase in current and voltage . For example: 5V input generates 5,5Amps and 6V over the cell. that's too much current the resistor could burn! and voltage drop across resistor is in agreement 0,54V
when connect the pair of cells on a separated power supply varying voltage until 10V creates 4Amps. why?!..
thanks in advance