Unfortunately My lab TA is terrible and does not know anything about the labs we are doing just the final answers. This forum seems to be pretty awesome so here are my list of questions please! I attached a picture of multisim and my lab. I am not getting the output that is expected of double voltage just a weird looking capacitor output. Maybe I am doing something wrong on the osciloscope. After todays lab I have been discouraged by how terrible some of the teachers are here.
1. It seems to be hooked up correctly according to the lab except in multisim it requests a ground so I assume I put it in the correct place but not sure.
2. I chose a ac voltage source instead of ac power as the component but not sure exactly if that was correct as ac power shows an RMS value while the ac voltage I chose gives me Vpeak.
3. From What I have read about this doubler circuit it charges the C2 cap on negative cycles then uses the C1 to add in more DC voltage which gives you the double voltage? but why do they say it must be >10V
4. The agilent oscilioscope has the two leads for X and Y but when we use it in the lab the BNC gets split into two leads each one going to ground and the other to measure. Does it matter with the simulator that there is no ground lead from X and Y do you just attach it how I have it attached?
5. Why in a lot of my labs about diodes do they show a transformer then going to the diodes is there any specific point or can I just use the AC voltage source I have shown in my multisim every time. Seems like an extra component just to show that I can step down the voltage?
6> not related to this lab but about loading effect. When I try to simulate the loading effect for the output of an opamp it doesnt seem to drop the voltage like I thought it would it just stays constant. I think I may be simulating something incorrectly. Its just a basic 741 inverting op amp with a gain of 20 with a load of 1k resistor on the output but when I take the load off its still the same voltage.
Thanks everyone!
1. It seems to be hooked up correctly according to the lab except in multisim it requests a ground so I assume I put it in the correct place but not sure.
2. I chose a ac voltage source instead of ac power as the component but not sure exactly if that was correct as ac power shows an RMS value while the ac voltage I chose gives me Vpeak.
3. From What I have read about this doubler circuit it charges the C2 cap on negative cycles then uses the C1 to add in more DC voltage which gives you the double voltage? but why do they say it must be >10V
4. The agilent oscilioscope has the two leads for X and Y but when we use it in the lab the BNC gets split into two leads each one going to ground and the other to measure. Does it matter with the simulator that there is no ground lead from X and Y do you just attach it how I have it attached?
5. Why in a lot of my labs about diodes do they show a transformer then going to the diodes is there any specific point or can I just use the AC voltage source I have shown in my multisim every time. Seems like an extra component just to show that I can step down the voltage?
6> not related to this lab but about loading effect. When I try to simulate the loading effect for the output of an opamp it doesnt seem to drop the voltage like I thought it would it just stays constant. I think I may be simulating something incorrectly. Its just a basic 741 inverting op amp with a gain of 20 with a load of 1k resistor on the output but when I take the load off its still the same voltage.
Thanks everyone!
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