Please check the continuity of this circuit

[flemmard]

Hi all,
The following design has serious flaw but it still works which means it's not a proper and professional EE design .

Please tell me ,

1) what's serious mistake in this flawed circuit (which works fine)
2) could you give me suggestion of any kind to check the continuity in the big rectangular box ? you can use chip or other component but the big rectangular box with voltage regulator being the same.


Thanks

 

[Mikebits]

Well, first of all is this regulator used as a welder? Because direct shorts to ground need oodles of juice. Perhaps you should read your textbook on this HW question.

 

[rjvh]

What do you try to achieve?

Robert-Jan

 

[shokjok]

Unless the regulator is contained within an IC or module, this is either a very cheap heating circuit or a fatally flawed idea.

 

[audioguru]

Everything is shorted to ground.
Why?