I want to build a boost converter for an LCD display back light. I am going to need 5V my supply for the PIC can take a max of 3.6 V so I plan to use 2 AA batteries.
Yeah I know it is probably easier to use a display with no back light but I have a bunch of these on hand and they are much more readable with the back light. Plus I would like to learn something about boost converters.
I have designed a simple boost converter based on the information I found here.
See the LTSpice schematic and simulation below. I have also included the LTSpice file.
I seem to be getting the voltage I need but I am getting a bit of ripple.
Will this be OK for the LCD or maybe should I increase the value of C1?
Is there another recommended version for L1? Maybe something more common?
I really have not used LTSpice much.
Toward the end of the simulation the voltages go to heck. Is this just because the simulation is ending?
Yeah I know it is probably easier to use a display with no back light but I have a bunch of these on hand and they are much more readable with the back light. Plus I would like to learn something about boost converters.
I have designed a simple boost converter based on the information I found here.
See the LTSpice schematic and simulation below. I have also included the LTSpice file.
I seem to be getting the voltage I need but I am getting a bit of ripple.
Will this be OK for the LCD or maybe should I increase the value of C1?
Is there another recommended version for L1? Maybe something more common?
I really have not used LTSpice much.
Toward the end of the simulation the voltages go to heck. Is this just because the simulation is ending?
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