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I had the same problem here. When I selected the Configure button no OA installation appeared.
To solve that I need to install the XTERM terminal emulator.
Hello,
I'm looking for a technology that allows me to track the position of various objects and identify them in a specific space (2D positioning only). The objects can carry only lightweight sensors like tags.
Any idea?
In you circuit you have just two vector variations to change the value of F:
ABD = 111 to ABD = 011 (F falling)
ABD = 011 to ABD = 111 (F rising)
The capacitances are neglected because the nodes that they are attached don't have voltage variation or because in the region the transistors are...
The capacitances in the nodes are the sum of the drain capacitances of each transistor connected to the node.
The drain capacitance in this case is considered to be just the diffusion capacitance (pn junction capacitance), so:
Cd = Cdb, where
Cdb = Cbotton * Ad + Csw * Pd
Cbotton is the...
The capacitance due to the overlap of gate over source/drain is called Overlap Capacitance.
The drain/source diffusion capacitance is like the diodo difusion capacitance because it is formed in a inverse biased P-N junction (drain/source to substrate).
Like the diodo, the capacitance varies...
AD, like the others said, is the Drain area (Channel Width * Drain Length). The area of drain diode is the area at the botton of the diffusion plus the area of the difusion sidewalls. The picture gives a better explanation.
Added after 1 minutes:
Ps: in the picture the Drain Length is X.
Re: low drain cpacitance
Maybe because the source is often connected to Vdd or GND.
The charge in this capacitors will be constant and a better ripple filtering will be made.
If the drain is more capacitive the circuit will run slowly.
Audio Delay Circuit
mikerbot,
the analog way to do this is almost impossible to be implemented, because make an analog delay you have to put in series a lot of stages with intrinsic delay, like buffers. In your case, where you need a delay of 12 seconds (infinite comparing with each buffer...
One way to do this is using the .ALTER command to run a simulation for each V you want (see the HSPICE User Guide: **broken link removed**).
The results will be extracted to a file and you can take the slope with a spreadsheet software or by making a script in perl, python, ....
Here you must calculate the capacitance of each node of the circuit and use a well known equation called Elmore's Delay Model. This equation gives a rough aproximation of the circuit delay, once it don't consider the transistors input slope.
In your circuit you will just calculate two cases...
I sugest you to use the circuit that neddie drawn and put your LM386 connected to the opamp's output, than you connect a capacitor to the LM386 output and your speaker in series with it. Simple. It isn't the better way to do this, but will work.
If you see the LM386, there's always a capacitor...
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