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walters said:Does a circuit with Positive ground output negative voltages? negative DC offset? waveforms below the zero reference?
Does a circuit with Negative ground output Positive voltages? Positive DC offset? waveforms above the zero reference?
walters said:Does a circuit with Positive ground...
Does a circuit with Negative ground...
DigiTan said:...because nobody ever learns by asking questions; right, Bloki? [/sarcasm]
Walters, looks like you're getting the hang of this waveform stuff. 8)
walters said:Thanks alot guys for the pictures and help
If ground is a reference then Negative ground would be Zero volts but with positive ground it will be VCC lets just say +5volts
So if ground is the reference and positive ground then ground is +5volts
If i have a input of +5 volt pulses going into a Positive ground circuit then it will take the +5 volt pulses and output a (-)5 volts because the ground is reversed like a mirror?
Or it takes the +5 volts and outputs zero to -5 volts?
Germanium transistors have been obsolete for a long time.walters said:Most germanium PNP circuits use positive ground like (-) 9 volts so if the input signal is inputing a function generator with positive voltages the output of the circuit should output a mirror version of the input signal i would think its just flipped
Only if the circuit has a gain of one, a positive power supply and a negative power supply, is biased to ground, and the function generator is coupled to the circuit with a capacitor. If the circuit is DC coupled to the function generator then the circuit must have an input offset DC voltage of -2.5V to cancel half of the input DC level.Negative ground circuit:
If ground is Zero volts and the function generators is output a triangle waveform at (+)5volts p/p. On the oscilloscope the triangle would ramp up and down +2.5 down to -2.5
A Positive ground circuit doesn't have ground also at -9V.Positive ground circuit:
If ground is (-) 9 volts and the function generator is output a triangle
wavefrom at (+)5volts p/p. On the oscilloscope the triangle would ramp up and down -2.5 down to +2.5?
No. Positive-going is always positive-going unless something inverts it.Does the Positive ground circuit reverse the input voltages?
No. A level-shifter or inverting circuit is needed. It would probably need positive and negative supplies.or change the DC offset to negative DC?
About the only time you will see a modern circuit with a positive ground is with telephone systems in a central office.The height measurement to the positive ground is confusing me sorry