[VicPiMakers Projects] George's electrical challenges

[Michelle Wiboltt]

Here’s what I’m thinking, if u use / \ lines like these as tempo controls and space accordingly then, imagine the lines to represent bottoms up = to get back up the left one is easier but still slowing...the other one is a monkey hanging back kind of climb so, very much slower tempo, get it? Couldn’t theoretically, each be seen as a volt meaning,          For instance,                                    +3.3v -------/ divider resistor ------\point of analog read ------ Thermistor resistor ------ Ground.

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From: Projects <projects-bounces at vicpimakers.ca> on behalf of George Bowden <gtbowdeng at gmail.com>
Sent: Friday, December 18, 2020 5:20:23 PM
To: Talk about Raspberry Pi / embeded projects <projects at vicpimakers.ca>
Subject: [VicPiMakers Projects] George's electrical challenges

1) What single passive component can you use to measure the voltage that your multimeter puts out on its leads when measuring ohms?

2) How can you stabilize the voltage at the point of analog read in the following voltage divided thermistor network?
+3.3v ------- divider resistor ------point of analog read ------ Thermistor resistor ------ Ground

3) What should be the value of the divider resistor to get the most dynamic range in the voltage divider at the point of analog read.  The thermistor is 10k at 20 Celsius

4) About how long will a 10k thermistor take to stabilize its resistance to one part per 5000 in a constant temperature free air environment, given 2 volts across it?
See reference material https://www.ti.com/lit/an/slyt774/slyt774.pdf?ts=1608340466291&ref_url=https%253A%252F%252Fwww.google.com%252F<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ti.com%2Flit%2Fan%2Fslyt774%2Fslyt774.pdf%3Fts%3D1608340466291%26ref_url%3Dhttps%25253A%25252F%25252Fwww.google.com%25252F&data=04%7C01%7C%7C20cd2fd058e149b028c008d8a3bc72ec%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637439377057949270%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=B318%2FGV3ijJzxr%2FljjXREaGmTXM1b9oDuBqgU54xGBM%3D&reserved=0>

5) Do you have "passive" electronic challenges to add?....
--
George Bowden,
gtbowdeng at gmail.com<mailto:gtbowdeng at gmail.com>
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