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Not sure how to help. The code can be seen on the left hand side.

The link above has links to the desmos sample files I used.

Glad it was helpful!

oh I see, because u() acts as a function of tau, not t in this case.

Yes, but I am not quite sure how it would sound. I think that if the audio were modulated with AM or FM, this could be used as a detector at the modulation frequency. Recently we were able to show SR being used to detect a sin wave above 10KHz. It seems the limitation is the slew rate of the OPAMP. Of course, faster circuits can be used to implement hysteresis.

Does the Schmidt trigger circuit shown have bandpass , highpass or lowpass properties to the sinewave, or a rather sharp Q factor? Just wondering what the working range of the input sinewave frequency range would be?

@@ossiebalboa5617 I would say band pass, but the Q would be very wide. While it is called a resonator, I am not sure if it has a Q. Research topic?

I am not sure of the other terms, but it wakes up from a sleeping state. Shutdown sounds like there is no power to the device.

Next video!

Yea, It does sound like that. I am saying theory.

82, She is recovering from some injuries.

How do you make empanadas in Argentina? (My wife makes a Puerto Rican Version.)

Here is a love video:ruclips.net/video/upB0c01b7D0/видео.html

I think you gave me an idea for a final exam question. Systems (create with OPAMPS) can be used to measure skin conductance, or skin temperature, which can can be converted into love. Also, as I had suspected, some love testers are just random number generators.

It just delays the shape by 3 seconds.

Sorry I do not have a Mac. There is a Mac version, but is better to run a Windows emulator.

Here is a link:www.dropbox.com/s/p5bk0ec7s94bmgp/step_conv_step.py?dl=0

It takes a long time to generate.

Cool, was this for a job?

@@davidwparent No, I am a retired and took up electronics as a hobby. The project is a synthesizer. With your information, I gained an understanding of what I should be seeing with the oscilloscope.

Labview or in this case Labtracer can collect the data needed to extract Io, and lab view does have calculation capabilities. I would use python with pyvisa to write my own script to do this. The reverse current can be dominated by a shunt resistance that can make it hard to measure Io this way. That is why we do it in the forward direction. PM me if you want some more info.

Hi Kevin, Thanks!

Thanks!

Notice that Re2A is not shorted. Only Re2b.

@@davidwparent aah yes my bad

Hi , I put a link in the description. Enjoy.

@@davidwparent Thank you sir!

The system is non-linear in that you can not use superposition to analyze the noise input alone and the sin wave input alone and then sum the two responses together and get the proper response. The noise peak to peak is just large enough to trip the Schmitt trigger back and forth, and the sin wave Vp is set to that it can not trip the Schmitt trigger on its own. If Vp of the sin wave is too big, then it behaves like a normal Schmitt trigger would and you get a 50% duty cycle square wave. It is best seen on a spectrum analyzer. If you see the peak at your target frequency but do not see peaks at the 3rd ,5'th ,7'th .. harmonics, you have stochastic resonance. Google this paper : STOCHASTIC RESONANCE IN A BISTABLE SYSTEM Here is the lab manual:www.dropbox.com/s/mah6ifz30deevz3/summer_bridge.pdf

@@davidwparent thanks David! Will read the paper. Also I think I need to setup the experiment and see it for myself. Super interesting! Thanks also for the lab instruction.

@@davidwparent Hi David, massive thanks for the lab manual and these description! I just set up the circuit and really enjoyed seeing it! notably the disappearance of the harmonics in the power spectrum when SR in play is interesting.

@@aspiran2010 Great, now you can explore how the hysteresis width affects the SNR or what the minimum detectable signal amplitude is.

@@davidwparent also one quick question, i struggle to understand how the harmonics are gone. is it essentially like a pulse width modulation replicating the sine wave? because the ST is at the end either on or off. it is so fascinating to see the even harmonics are removed while the output is still "digitalised". The closest thing I can think of is PWM. (sorry for the basic question - I am very new to SR)

What kind of filter gets rid of a DC (low frequencies) and passes high frequencies?

Sorry, I do not see the comments much. just a tungsten incandescent bulb. I take a commercial cell, find the VOC in the sun (Taking note of the AMI value), and then adjust the light of the bulb to match. Real solar simulators are expensive. This was more for education, then publication.

@@davidwparent Thank you sir

I think the Wikipedia age about convolution uses matlab, and might even come with this as an example.

@@davidwparent how to get tht code

@@anbazhagane1266 I do not use matlab

Here is a link top the file:www.dropbox.com/s/lmtat326xp8eayh/ti_pwm_compare_ENB_vs_FCLK.asc?dl=0 I do not measure inl, or dnl with this method. The worst-case ripple happens at 50% duty cycle, so one does not have to measure the other % duty cyles as the 50% case limits the ENOB. This only works for PWM DACS.

@@davidwparent Thank you for the reply 👍

Right-click on the diode, left-click on select new diode, and then choose the diode you want.

@@davidwparent Yes, i know, but i don´t have any spice model. Only the default.

@@kionmahuermicio9860 I am not sure why you can not select a different diode model. Maybe ask the LTpsice group on yahoo groups.

Here is a circuit with the spice model. The important part is set the model level to 12 which is the EKV model. IT is for a 2n7000 that I extracted myslef:www.dropbox.com/s/fp9tk8l6nf9as8s/vds_ekv7.asc?dl=0

It has been a while but I am trying to make sure that VDD is big enough that the amplifier will not clip the signal. IF Vin is given in amplitude rather than peak to peak one would need to multiply it by 2 to get the voltage over dead you need. That or I put 2\times to make sure I had extra headroom. I lost my original notes in a computer mishap.

Yep, I was in a hurry, and I did not have a wacom tablet yet.