1.) At work I troubleshoot Logic circuits that are hard for me because if you lift up an IC Pin or lift up a leg off of a resistor, cap, transistor or anything , it will the circuit in different stages or branches "floating "
So you can't lift up a resistor , cap, transistor , pin to an IC chip without turning the stages and branches FLOATING , plus it changes the DC voltages or logic levels
What kind of problem is this called?
2.) Also when I take out a IC logic chip and put a new IC logic chip in the logic circuit board it will turn on different lights and give different voltages through out the circuit , If I put in a different IC logic chip with the same part number and everything, the Logic circuit is very sensitive when removing and putting in the same part number IC chip.
What kind of problem is this called?
3.) When I put in an New IC logic chip with the same part number , it will cause more problems, problems maybe that was there before the IC chip was bad, you turn on the circuit board and there is 3 more problems than before with the Old IC logic chip.
What kind of problem is this called?
4.) For Logic Circuits that has Busses, Enable busses, Reset busses, Set busses,
a.) I have a buss at work that when you turn on a switch , it makes the Logic Buss for +15 volts to -13 volts back to +15 volts, What is this called? What kind of circuit is it called that flips the voltage back and forth like this in steps?
b.) Also the Bussing problem is about, there is resistors and diodes connected to this buss that goes to different channels to turn on different lights .
My question is that when I lift up a resistor or diode that voltages on the buss will changes and also the voltages on the different channels that are connected to the buss line will have different DC voltages.
What is this called when a circuit does this? and what kind of problem is this called?