Disclamer: I don't have formal education in Electronics, I am pursuing it as a hobby.
Hi,
Given that linear voltage regulators waste power proportional to output current, I was thinking that using them only to control voltage-controlled IC's like mosfets and op-amps would be highly efficient. As a results, I came up with configuration as seen in picture below. It is very similiar to how buck converters work. I use a op-amp in comparator configuration to monitor output voltage to lm7805 output (5V) and switch a mosfet on/off accordingly in an attempt to regulate voltage. I was wondering if this configuration would work in real life or is there anything I am missing out?
Hi,
Given that linear voltage regulators waste power proportional to output current, I was thinking that using them only to control voltage-controlled IC's like mosfets and op-amps would be highly efficient. As a results, I came up with configuration as seen in picture below. It is very similiar to how buck converters work. I use a op-amp in comparator configuration to monitor output voltage to lm7805 output (5V) and switch a mosfet on/off accordingly in an attempt to regulate voltage. I was wondering if this configuration would work in real life or is there anything I am missing out?