I have been working on an Arduino DC programmable power supply using:
- MPC4725 (Digital to Analog Converter)
- LM358 (Operational Amplifiers)
- IRFZ44N (Mosfet)
Wanting to add a current limiter feature, I found a circuit pretty interesting described here:
However, I cannot understand the point of having the 10 kOhms resistor at the non inverting input... Do you have any ideas?
Other question is about the 100nF capacitor with 1kOhm resistor. It seems to me that it is some kind of pass band filter... Do you agree with that?
Thank you for your help