DC line voltage compensate, transistor that has a rectangular waveform on the base

[danny davis]

How does a DC line voltage compensate Circuit work? and what it is used for?

The transistor that has a rectangular waveform on the base terminal , the rectangular waveform controls the conduction time and duty cycle of the transistor

 

[FvM]

Sounds like a switched mode converter (buck or boost), additional information about the "circuit" should be given in your post.

 

[danny davis]

The schematics are controlled at my job, So I'm going to have to hand draw them and upload them next week