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digital uniform distribution noise generator
Do you need gaussian noise or uniform noise.
Do you need white noise or other type of spectral density.
Matlab has a basic random function with uniform distribution, which is rand().
A few years ago I used to use Xilinx Foundation 2.1, I found in my backups an old project that can be useful for a new project.
Could someone tell me, how can I read an old project or at least how to convert the schematic?
I think that you are using your clock (seconds) as a reference to generate pulses at a given rate per minute. So, to mantain the reference precision , you have to derive the output from it. One way is using the reference to clock a state machine.(divider).
May be you could use some analog...
Does FPGA designer need to be a "Floorplanning Master&a
I think, that if anyone wants to use the maximum, capabilities of a device, do floorplaning is a must.
May be it can be compared with programming a DSP with C and to don´t know its assembler language.
If you already have 0-5V @40mA, you only need an amplifier to boost the output current. a new easy way could be using a power operational amplifier such as opa549.
To implemet regulation, you need an ADC to feedback the actual output to the microcontroller.
solid state relay
If you want to use DC voltage with TRIACs.
I suggest you to research for forced commutation.
This circuit allows you to turn off your TRIAC anytime.
I think that none counter based scheme can reach a 1 ns resolution.
Recently, I found a couple of papers which use FPGA to make a time to digital converter with a 200ps resolution, using tapped delay lines.
Trans, On Instrumentation Vol46 No1 Feb1997.
Timing in Matlab?
You need to define a frequency sample(Fs), Fs tells matlab, the time to reproduce a single sample.
In accordance with your code t=1:0.5:10, you are using a Fs=1/0.5, so you must give to the sound command the same Fs.
Plus, you have to fix the formula :-)
good luck
vhdl monostable
this is extracted from a Xilinx example code.
-- SWITCH DEBOUNCE --
process(osc_sw,reset, clk_scaler(14))
begin
if (reset = '0') then
debounce <= (others => '0');
elsif (clk_scaler(14)'event and clk_scaler(14) = '1') then
if (osc_sw = '0') then
debounce(0) <=...
I suggest you to find one with Spartan3 FPGA, because they are bigger and cheaper. In www.insight.memec.com you will find a good benefit/cost ratio boards.
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