Electronic – MC34063A step up voltage converter

dc/dc convertermc34063step-up

i need change 5v to 12v that it use to supply a device;
for this use MC34063A step up voltage converter;
this site can calculate the parameter.

i have problem all thinks is OK but i have same voltage at output!

how to find my mistake ?

MC34063A step up

MC34063A step up2

Best Answer

Pin 2 is not grounded so it does not work.

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