Hello, I am wanting to design and fabricate a high voltage supply using the MC34063 to power Nixie tubes for a clock. Currently I am referencing this site for a circuit

https://andrewjkramer.net/usb-nixie-power-supply/

When modeling this circuit in LTSpice, I can’t get the 170 volts on the output. Instead it is just clamping to about 11 volts on the steady state. Is this a circuit issue, or is this an LTSpice issue? Just trying to make sure before I order parts for it that this circuit works for the build.

I will attach the LTSpice files below.

 

Q1 C & E are backwards.
There is more wrong but that is clearly wrong.

 

Q1 C & E are backwards.
There is more wrong but that is clearly wrong.

I figured out my wiring errors now, sorry about that. Everything is working out. I’ll post my circuit here in case anyone in the future needs a schematic.