Fix typos

Author: dannystaple

content/2024/10/20-micromouse-sensors/uk-micromouse-sensors.md

@@ -53,7 +53,7 @@ Model number | VISHAY BPW85C | OSRAM SFH309FA | Notes
 --- | --- | --- | --- 
 Type | NPN Phototransistor | NPN Phototransistor | The Same
 Package | T1 - 3mm | T1 - 3mm | The Same
-Wavelength sensitivity (nm) | 450-1080 | 730-1120 | The emitters are in this wwavelength
+Wavelength sensitivity (nm) | 450-1080 | 730-1120 | The emitters are in this wave-length
 Mac sensitivity (nm) | 850 | 900 | The OSRAM is closer to the IR emitter
 Dark current (nA) | 1-200 | 0-1 | The OSRAM has lower dark current
 Collector-emitter voltage Max (V) | 70 | 35 | Both will be fine for 3.3v
@@ -62,7 +62,7 @@ Cost per part for 5 to 10 | £0.641 | £0.468 | The OSRAM is cheaper. Comparison
 
 Note that both also have a minimum order quantity of 5.
 
-So far, the OSRAM device is more sensitive. It's more focus with a narrower angle, which might make it more useful for the line sensor. For the wall sensor, a wider angle might be more useful. However, they are otherwise equivalent with these. Some heatshrink could be used to narrow the angle of the VISHAY part.
+So far, the OSRAM device is more sensitive. It's more focus with a narrower angle, which might make it more useful for the line sensor. For the wall sensor, a wider angle might be more useful. However, they are otherwise equivalent with these. Some heat-shrink could be used to narrow the angle of the VISHAY part.
 
 At this point, my student needed to leave, however, I carried on investigating so I could send them the results.
 
@@ -80,9 +80,9 @@ These graphs show the current through the phototransistor versus the collector-e
 
 These are a little awkward to compare. The OSRAM graph on the left has a linear X scale for Vce vs a log scale for current. The VISHAY graph on the right has a log scale for Vce vs a log scale for current. We are at 3.3v, so I've drawn in red dashed line roughly where I think 3.3v is at on each. This is a bit easier to place on the VISHAY graph.
 
-I can then trace this up, and draw some lines for the light levels across to the current axis. I've drawn these in green, blue and yellow. I'll ignore the additional 0.05 mW/cm^2 line on the VISHAY graph, as it's not on the OSRAM graph. I'll ignroe the 0.25 and 0.2 measurements that are different. Leaving us 3 to compare.
+I can then trace this up, and draw some lines for the light levels across to the current axis. I've drawn these in green, blue and yellow. I'll ignore the additional 0.05 mW/cm^2 line on the VISHAY graph, as it's not on the OSRAM graph. I'll ignore the 0.25 and 0.2 measurements that are different. Leaving us 3 to compare.
 
-I've then tried to roughly interpret the log current graph. Note that the current scale for both is mA (millaamps). On the OSRAM graph the lower bound is 10^-1, or 0.1. ON the VISHAY graph, the lower bound is 10^-2, or 0.01. the upper bounds of the current axes on both are the same though.
+I've then tried to roughly interpret the log current graph. Note that the current scale for both is mA (milliamps). On the OSRAM graph the lower bound is 10^-1, or 0.1. ON the VISHAY graph, the lower bound is 10^-2, or 0.01. the upper bounds of the current axes on both are the same though.
 
 Once the numbers are drawn in, these characteristics are pretty much the same, perhaps with some error on my part interpreting the log scale.