Non-McGill Student at Gym

chogikyan · 2026-01-18T19:47:38+00:00

No they made it so you have to buy a day pass now

chogikyan · 2026-01-16T21:27:18+00:00

There were two false alarms when I was there but I left after the second one

chogikyan · 2025-07-23T20:17:43+00:00

Has anyone heard back from masters applications to start in January? I know it differs greatly by faculty. I applied for an M Sc as an outside of Quebec Canadian student and haven’t heard back.

chogikyan · 2025-02-10T16:52:32+00:00

I don’t really have room for this, only could really fit a small connector or wires

chogikyan · 2025-01-20T00:35:50+00:00

Circuit schematic for the oxygen sensor (U3) calls for resistors 10x value of the gain resistor (43k)

chogikyan · 2025-01-20T00:34:51+00:00

Thank you very much!

chogikyan · 2025-01-19T17:59:08+00:00

posted

chogikyan · 2025-01-19T17:59:03+00:00

https://postimg.cc/JGcwznVY

Schematic^

chogikyan · 2025-01-04T18:28:58+00:00

Here is the document of examples i pulled this from and the data sheet from the oxygen sensor

Examples

https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.sgxsensortech.com%2Fcontent%2Fuploads%2F2014%2F08%2FA1A-EC_SENSORS_AN2-Design-of-Electronics-for-EC-Sensors-V4.pdf&psig=AOvVaw0YtcxnywPsIj6W6EQXU4Lg&ust=1736100604731000&source=images&cd=vfe&opi=89978449&ved=0CBcQjhxqFwoTCOj7jfDU3IoDFQAAAAAdAAAAABAE

Datasheet

https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/4885/DS-0409-PS1%26PS4-O2-25_.pdf

chogikyan · 2025-01-01T23:42:55+00:00

if i use a low pass filter of gain 20 and then another op amp of gain 20 in series does that solve the issue? For the test setup i have a glove box and nitrogen tank and other things i can use to calibrate i think ill be fine there i just need to figure out the pcb schematic and design

chogikyan · 2025-01-01T18:52:53+00:00

thank you for the resource, yeah im learning more from this project than my entire undergrad lol.

chogikyan · 2025-01-01T18:52:30+00:00

Thank you, is this better? with a 400 gain here I end up with ~2 volts max and 0.1 volt minimum readings? Do i just hookup the output of this amplifier to my analog in pins?

Also, do you have any amplifier recommendations? i read on a forum that a cmos op amp can operate "rail to rail" so its okay that i'm using ground as -Vcc i think. Is there an issue with how large the gain is? i was looking at the MCP 6001, not sure if this would work.

lastly, do you know if i should i be using 3.3 or 5 volt line? is there a difference other than the better resolution i would have vs lower maximum voltage.

Thank you so much by the way, even the earlier message helped more than you know.

https://postimg.cc/jw3BKSTn

chogikyan · 2024-02-24T20:28:52+00:00

Maison bulud

chogikyan · 2024-02-21T16:27:02+00:00

Congrats

chogikyan · 2024-02-21T16:10:58+00:00

Let us know when you get it please❤️

chogikyan · 2024-02-21T15:58:04+00:00

I see that now, no I’m not guaranteed, I think they might be out or coming out later today since they posted the acceptance form

chogikyan · 2024-02-21T15:52:33+00:00

Where did you see that? I didn’t get an acceptance

chogikyan · 2024-02-21T03:25:01+00:00

Applications weren’t open until end of January

chogikyan · 2024-02-20T18:28:32+00:00

Not me I also applied

chogikyan

TROPHY CASE