Forums » General Electronics Discussion

I've been trying to get this simple circuit to work forever, but the voltages never come out right. How do I place the ground in the circuit? Because it makes the voltage over the resister 0 which screws up the voltage division.

https://www.circuitlab.com/circuit/7z7sa6/voltage-division/

On paper: V1=4.27V V2=1.82V V3=3V V4=0.91V

I tried your circuit and it seems to simulate perfectly. I manually calculated the voltages and they agreed with CircuitLab...

Try your paper calculations again?

I got VA=5.727V VB-3.909V VC=909.1mV

I'm trying to figure out the voltage on each resistor, like this.

http://circuits.solved-problems.com/482/voltage-divider-voltage-division-rule/

You're both right but I think you're talking at cross purposes about which voltages are measured where.

Does this help?

:)

Yes perfect!

Alright last one lol, I tried setting up this circuit, I have the picture for it. But I can't get it to work either :(

Here is the circuit I am going for, with the R=27k, C=0.1uF and Vs= 3 amplitude, 200 Hz, Square Wave http://s15.postimage.org/43j8f7acr/image.jpg

This is what I created, but when I simulate it, it comes up wrong. Suppose to show 1 complete cycle of the AC so stop time = 0.005s

1) Don't forget the ground between V2 and V3.

2) You might want to run it for 0.05 sec and see a few cycles.

C1 is "charged" to around -11 volts by the +3V from V1 along with the almost 4 gain of OA1 when the DC point is established. It takes a few cycles for it to stabilize to its new value with the AC drive.

look at this!

@hellyeah,

Well, I looked at that.

Now, what was your question?

:)