Hello, I was given the following circuit, somehow its suppose to open one voltage after the other.
I suppose its opening Vd+ later then the others.The inputs are tottaly DC.
Somehoe there is RC mechanism which will delays the opening of maybe Q1.
probably i am tottaly wrong but this this what its supposed to do.
Is there some more practical intuitions regarding how this circuit works?
Thanks.

 

UPDATE:
Hello, I was told the following, I need to increase garually one of the inputs to see the effect.
my load TGA2227
My inputs are +12 -12 GND What input shouldI increase gradually?
Could you say the logic of the different part so I could understand the inner workings logic?
Thanks.

" if the voltage rises slowly, the outputs will switch in sequence. Try a simulation and slowly increase the input voltage to see how the outputs changes."
"in MOS amplifiers to ensure the gate voltage is present before the drain voltage or vice versa, depending on the design so the device can't start up at maximum current if voltage on the gate isn't present first"

 

Hello ,After working on this I came to the conclusion that this circuit is just checks the sequence.
Its not creating the sequence its just checking that the sequence is correct.
This circuit is very faulty so Just need analog logic to build a new one.
Suppose first create a lower edge 0 to -2.5V to the gate and then a rising pulse 0 to +8V to the drain as shown below.
Suppose I have +12V -12V rails and I put a delay between them.
BJT's are Valves ,What is the BJT logic to make it function as a sequence checker?
Thanks.