A diode clamp works by limiting the voltage to one diode drop above the clamp voltage, typically you want to protect the input to a sensitive device.
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While Vin is below about 5.7V Vout will match Vin since the diode is...
The resistance of anything is R = V/I. The resistance of the filament at a given point is the slope (derivative) at that point. There are two ways to get this. You can manually (with ruler and pencil) approximate the slope at a point, or you can curve fit over a protion of the curve around...
Nope. The voltage at the RC node is always zero (this is a virtual gnd). With Vin at zero, the circuit looks like this:
_ Vout
|
| -
I C
<--- | +
gnd ____ R __________|...
Russ,
Nice photos. Are you shooting from Philly? What are your skies like? I'm in rural south-central PA and I have maybe mag 5.5 from my yard. Have you done any deep-sky work? If so, I'd be interested in your results given the high light pollution in Philly.
You need to be a LOT more specific. If you mean measurements of cosmological expansion, all measurements are redshifted. If you mean the local volume, then they are dependent on local motions and I don't know the mix.
What are you asking?
EvLer,
Yes. Evaluating, you will have:
Vc = \left[\frac{1}{RC} \times -2(t)\right]_{0}^{1} \plus+ \left[\frac{1}{RC} \times 0(t)\right]_{1}^{2}
You can see that the second term is zero forever with Vin = 0.
SGT,
Ignore the math for a second and check the circuit. When Vin is at zero the current through R is zero. Since there is no current flow at the virtual node (which is always at zero volts - the reference - in this circuit) the voltage across the cap as measured at Vout will hold at...
Vc = \frac{1}{C} \int_{0}^{t} i_c dt
In your circuit i_c = V_{in}/R
so your form,
Vc = \frac{1}{RC} \int_{0}^{t} V_{in} dt
looks right. So, assuming Vc started at zero at To with Vin = -2V, you have,
Vc = \left[\frac{1}{RC} \times -2(t)\right]_{0}^{1}
When you switch from...
Just reread your post. Do you want:
1) The AC component only with an option to pass the AC + DC
or
2) The AC component only with an option to eliminate the AC and pass just the DC component?
Add another LP filter as shown. You did not specify a response time, so you'll have to calculate the R and C. A sufficiently low-pass filter will pass the DC component with some ripple that you must define as acceptable. Its a trade-off between response time and AC ripple...
JesseM,
I completely agree that mutual dilation must follow, as you say, from existing observations of dilation in satellite and aircraft experiments. I've been trying to devise a way of actually showing it happen. I have access to high speed electronics and instrumentation able to measure...