Hello there
Nice to find you, this is my 1st post,hope for a good start
Now, i'm planning on making a power loader circuit to test the durability of Photo voltaic batteries according to different loads. Still i'm in the phase of thinking, collecting all stuff i need to make it work
So far i've made a network of 7*25watt resistors in parallel. Thats 175Watt max in theory but i plan to reduce it to 150 max or maybe less for safety reasons
Also i'm thinking of using a max4173 IC for sensing current draw from resistor network. Any other alternatives?
My main question is *if i can use PWM with 2-3 5 volt gate mosfets to get whatever wattage i want instead of 25-50-75-100...* and if yes what kind of mosfets and what precautions for interferences from PWM should i take account for? Edit the voltage will be about 13-14 and the amps about 10 so i think an IRLZ44 will do the trick
The circuit will have the charge controller which will have only the battery installed and not the PV panel,batery, then my circuit and finally the resistor network.
one last thing i want to know if i can use separate voltage for the mcu and the various ic's instead of using voltage from the battery. My concern is that if i use separate voltage for mcu i will have two different grounds one from battery to resistor network and one from the supply of mcu, correct?
enough questions for 1st post
Thanks in advance guys
Nice to find you, this is my 1st post,hope for a good start
Now, i'm planning on making a power loader circuit to test the durability of Photo voltaic batteries according to different loads. Still i'm in the phase of thinking, collecting all stuff i need to make it work
So far i've made a network of 7*25watt resistors in parallel. Thats 175Watt max in theory but i plan to reduce it to 150 max or maybe less for safety reasons
Also i'm thinking of using a max4173 IC for sensing current draw from resistor network. Any other alternatives?
My main question is *if i can use PWM with 2-3 5 volt gate mosfets to get whatever wattage i want instead of 25-50-75-100...* and if yes what kind of mosfets and what precautions for interferences from PWM should i take account for? Edit the voltage will be about 13-14 and the amps about 10 so i think an IRLZ44 will do the trick
The circuit will have the charge controller which will have only the battery installed and not the PV panel,batery, then my circuit and finally the resistor network.
one last thing i want to know if i can use separate voltage for the mcu and the various ic's instead of using voltage from the battery. My concern is that if i use separate voltage for mcu i will have two different grounds one from battery to resistor network and one from the supply of mcu, correct?
enough questions for 1st post
Thanks in advance guys
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