The circuit has a input threshold at .300amps of current
Once the input has .300amps it will take 3 seconds to SWITCH the output from 0 to +25 volts
A DVM meter response time takes awhile for it to switch from 0 to +25 volts
When measuring this time with a stop watch from the inputs threshold is tripped to when the output switches from 0 to +25 the DVM meter also adds in time to response tim
The Stop watch is 4 seconds because of the DVM meter response time was added to the circuits switch time
My Manager said this circuit is triggered by a Event , because the input has a threshold so i can't use a regular Non-storage oscilloscope to do these kinds of measurements?
the circuit has 7 stages of Op amp is first state, Intergator stage ( this converts AC to DC ) , Comparators stage that goes to a NAND gate, etc. etc.
The circuit works when you apply a Positive voltage the output will switch to +25 volts , but when you switch polarities on the input to a Negative voltage , the output will be dead.
I track down the problem, it was how the Positive comparator worked with the NAND gate, but Negative comparator didn't work with the NAND gate for some reason
The NAND gates output ONLY on the Negative polarity input would make the NAND gates output having an output null oscillation, fluctuating milli voltage up and down when there was NO INPUTS on the NAND GATE. It had a very small oscillation output or fluctuating output in micro or millvolts
Not sure what this is called when a 7400 family gates output is doing this