Hello, I'm trying to make a nixie tube clock project and i am very unsure about the power delivery solutions.
1st problem - Currently in my schematic have a LM7805 ic (with 12v Vin) to power the Ic's, but from my calculations i would be using 236mA from it thus having (12v-5v)*236mA wich results in about 1.65W of dissipation, since i dont want to have a big bulky heat sink im looking for a buck converter that would do the job.
2nd problem - After looking on the internet i found a cool page and schematic of a boost converter (using the IC MC34063A) from 12vdc to 180vdc which is exactly what i needed to power the nixie tubes. the problem is that i dont have enough knowledge to check if that circuit would do what i want.
3rd and final problem - Can someone help me check if the boost circuit works and help me design a buck converter with the same type of ic used in the boost converter?
My project with schematic is the following link:
https://easyeda.com/diogoferreira889/nixie-clock
Thanks you in advance
Diogo Ferreira
1st problem - Currently in my schematic have a LM7805 ic (with 12v Vin) to power the Ic's, but from my calculations i would be using 236mA from it thus having (12v-5v)*236mA wich results in about 1.65W of dissipation, since i dont want to have a big bulky heat sink im looking for a buck converter that would do the job.
2nd problem - After looking on the internet i found a cool page and schematic of a boost converter (using the IC MC34063A) from 12vdc to 180vdc which is exactly what i needed to power the nixie tubes. the problem is that i dont have enough knowledge to check if that circuit would do what i want.
3rd and final problem - Can someone help me check if the boost circuit works and help me design a buck converter with the same type of ic used in the boost converter?
My project with schematic is the following link:
https://easyeda.com/diogoferreira889/nixie-clock
Thanks you in advance
Diogo Ferreira