I ve seen quite often, the expresion "gauge", used to name the metallic covers employed for sheathing steel coils for transportation.
Is is a right name? Dictionary seems to be of no help here.
The material is some 1 to 1.5 mm thick. May I also call it "metallic plate" or what else if not...
If you like to see how I did it, just download the file "sine 24-steps input.asc" from here:
http://www.4shared.com/dir/3379830/4177d351/sharing.html
To be opened with LT Spice.
Please note that V1 is not PULSEd but plain DC (-1V).
Agustín Tomás
Yes, links do not work.
My circuit
http://img374.imageshack.us/img374/5610/lowpasscircuitdk1.png
Network not loaded by filter
http://img514.imageshack.us/img514/364/unloadednetworkvv4.jpg
Network loaded by filter
http://img404.imageshack.us/img404/4933/loadednetworkob0.jpg
After filter...
The first file is the circuit and the other four are pictures taken when output frequency was appr 77 Hz.
Their names are self explanatory, I hope.
http://img59.imageshack.us/img59/678...circuitpk2.png
http://img261.imageshack.us/img261/7...networkxd7.jpg...
After reading the manual (yes I do/did!) found that STEP is closer to what I need. And as I said already I just need to find how to employ REPEAT to get a string of steps, repeted forever.
Agustín Tomás
Hola Keith,
I found that even if able to repeat, PWL is not what I need.
I think is a step-like function for I want to generate a 24 steps signal following a sine-like law.
And that signal has to repeat continuously to test a filter response. See the thread about "lowpass active filter" that...
Please let me ask about this without showing any circuit, YET.
There is an active 4-poles Sallen Key lowpass filter. Cut off freq (-3 db) = 740 Hz. Both LM 358 opamps fed with +/- 9 V and duly filtered.
At the input, the signal from a network of 12 resistors driven by CMOS shif registers...
Using LT Spice, how could I simulate a repetitive signal with 12 levels between +2V and -2V?
Intention to use it as the input for a passband filter.
Initially I tried a voltage cell with PWL output but found that it does not repeat! My fault.
Any help out there? I will appreciate that...
Hola Dan,
That will make for ANOTHER file of unknown origin. No thanks.
Hola Keith,
Thanks for replying. For both multimeters, square wave IS acceptable according to their user manual.
My mistake (?) is to show round figures for PIC. Actual difference, at least in theory, is fraction of a...
I programed a PIC 18F to generate pulses going from 120 to 6000 Hz.
Measured the output with two frequencimeters (ME and WA) plus the reading from an analog TRIO scope.
In the Excel file I listed following values:
PIC: frequency expected at the PIC's output.
WA: frequency values obtained with...
Hola Keit,
Your reply made me realize that the jitter DO exists for the interruption but NO for the RC2 pin (clock output) toggling every time CCP1 matches TMR1. What makes the first part of my question, useless.
Let's now concentrate on the priority treatment of this.
Thanks for your help...
