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--- tutorials:learn:multimeter:resistance.html [2010/10/18 20:52]
daigo
+++ tutorials:learn:multimeter:resistance.html [2016/01/28 18:05] (current)
@@ Line 60: / Line 60: @@
 Look for an ohm (Ω) symbol, if its a ranging meter there will be a bunch of subdivided modes. If its auto-ranging there will be only one.
-{{  http://www.ladyada.net/images/metertutorial/wavetek_resmode.jpg?nolink&292x200  |}} \\ This meter has the Ω symbol and then 7 submodes, ranging from 200Ω to 2000MΩ (wow!)
+{{  http://www.ladyada.net/images/metertutorial/wavetek_resmode.jpg?nolink&292x200  |}}
+<class center> This meter has the Ω symbol and then 7 submodes, ranging from 200Ω to 2000MΩ (wow!) </class>
-{{  http://www.ladyada.net/images/metertutorial/mas830_resmode.jpg?nolink&292x205  |}} \\ This meter has the Ω symbol and then 5 submodes, ranging from 200Ω to 2MΩ
+{{  http://www.ladyada.net/images/metertutorial/mas830_resmode.jpg?nolink&292x205  |}}
+<class center> This meter has the Ω symbol and then 5 submodes, ranging from 200Ω to 2MΩ </class>
-{{  http://www.ladyada.net/images/metertutorial/extech_multimode.jpg?nolink&200x176  |}} \\ This meter has a multi-mode (you need to press a seperate MODE button to change between capacitor sense, diode test, resistor test and continuity!) It does not, however, have any numbered submodes, as it is auto-ranging
+{{  http://www.ladyada.net/images/metertutorial/extech_multimode.jpg?nolink&200x176  |}}
+<class center> This meter has a multi-mode (you need to press a seperate MODE button to change between capacitor sense, diode test, resistor test and continuity!) It does not, however, have any numbered submodes, as it is auto-ranging </class>
@@ Line 137: / Line 140: @@
 This is a 10KΩ linear potentiometer
-[[http://www.ladyada.net/images/metertutorial/linpotmin.jpg|{{ http://www.ladyada.net/images/metertutorial/linpotmin_t.jpg?nolink&500x375 |}}]]  \\ The minimum resistance of the pot, 0Ω (a short) as expected [[http://www.ladyada.net/images/metertutorial/linpotmid.jpg|{{ http://www.ladyada.net/images/metertutorial/linpotmid_t.jpg?nolink&500x375 |}}]]  \\ Potentiometer centered, about 5KΩ[[http://www.ladyada.net/images/metertutorial/linpotmax.jpg|{{ http://www.ladyada.net/images/metertutorial/linpotmax_t.jpg?nolink&500x375 |}}]]  \\ Maximum value is 9.5KΩ (it should be around 10KΩ) This video shows the resistance of a 10KΩ linear pot as it is adjusted. At the end it is set to approximately the midd, which is measured at 4.7KΩ, pretty close to the 'ideal' of 5KΩ.
+[[http://www.ladyada.net/images/metertutorial/linpotmin.jpg|{{ http://www.ladyada.net/images/metertutorial/linpotmin_t.jpg?nolink&500x375 |}}]]
+<class center> The minimum resistance of the pot, 0Ω (a short) as expected</class>
+ [[http://www.ladyada.net/images/metertutorial/linpotmid.jpg|{{ http://www.ladyada.net/images/metertutorial/linpotmid_t.jpg?nolink&500x375 |}}]]
+<class center> Potentiometer centered, about 5KΩ</class>
+[[http://www.ladyada.net/images/metertutorial/linpotmax.jpg|{{ http://www.ladyada.net/images/metertutorial/linpotmax_t.jpg?nolink&500x375 |}}]]
+<class center> Maximum value is 9.5KΩ (it should be around 10KΩ) </class>
+This video shows the resistance of a 10KΩ linear pot as it is adjusted. At the end it is set to approximately the midd, which is measured at 4.7KΩ, pretty close to the 'ideal' of 5KΩ.
@@ Line 143: / Line 153: @@
-Here are photos of a 50KΩ audio potentiometer[[http://www.ladyada.net/images/metertutorial/logpotmin.jpg|{{  http://www.ladyada.net/images/metertutorial/logpotmin_t.jpg?nolink&500x375  |}}]] \\ Minimum is 0Ω as expected
+Here are photos of a 50KΩ audio potentiometer[[http://www.ladyada.net/images/metertutorial/logpotmin.jpg|{{  http://www.ladyada.net/images/metertutorial/logpotmin_t.jpg?nolink&500x375  |}}]]
+<class center> Minimum is 0Ω as expected</class>
 [[http://www.ladyada.net/images/metertutorial/logpotmid.jpg|{{  http://www.ladyada.net/images/metertutorial/logpotmid_t.jpg?nolink&500x375  |}}]]
+<class center>Middle is 8KΩ</class>
-Middle is 8KΩ
+[[http://www.ladyada.net/images/metertutorial/logpotmax.jpg|{{  http://www.ladyada.net/images/metertutorial/logpotmax_t.jpg?nolink&500x375  |}}]]
+<class center>Maximum is 54.2KΩ, close to the ideal 50KΩ</class>
-[[http://www.ladyada.net/images/metertutorial/logpotmax.jpg|{{  http://www.ladyada.net/images/metertutorial/logpotmax_t.jpg?nolink&500x375  |}}]] \\ Maximum is 54.2KΩ, close to the ideal 50KΩ
 If, when centered, the resistance is more like 85% or 15% of the total resistance, then its a log pot. This is a 50KΩ analog potentiometer. When centered, the resistance is about 8KΩ.
@@ Line 177: / Line 188: @@
 After setting the range, I experiment with shading it on video
-																					<script type="text/javascript" src="http://blip.tv/scripts/pokkariPlayer.js?ver=2007072801"></script><script type="text/javascript" src="http://blip.tv/syndication/write_player?skin=js&posts_id=338479&source=3&autoplay=false&file_type=flv&player_width=320&player_height=240"></script><img title="Click to play" alt="Video thumbnail. Click to play." src="http://blip.tv/file/get/Ladyada-LDRTest844.flv.jpg" border="0" title="Click To Play" /> \\ Click To Play<script type="text/javascript">	play_blip_movie_338479();</script>
+{{bliptv>338479}}

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