GradFinalLab RS - Revision history

Shaproma: /* low-frequency input */

2011-04-28T06:09:46Z

low-frequency input

2011-04-28T06:08:29Z

low-frequency input

2011-04-28T06:08:19Z

Compare the threshold values to what is expected.

2011-04-28T06:06:21Z

Compare the threshold values to what is expected.

2011-04-28T06:04:06Z

low-frequency input

2011-04-28T06:03:27Z

Compare the threshold values to what is expected.

2011-04-28T06:01:18Z

Compare the threshold values to what is expected.

2011-04-28T05:59:08Z

Identify the input voltage threshold levels at which a V_{in} will produce V_{out} \approx V_{cc}

2011-04-28T05:58:44Z

Compare the threshold values to what is expected.

2011-04-28T05:55:55Z

Draw the Schmitt Trigger circuit you constructed. Identify the values of all components

← Older revision		Revision as of 06:09, 28 April 2011
Line 101:		Line 101:
	Below my digital scope picture of how the Schmitt Trigger output signal behaves with respect to low frequency input signal.		Below my digital scope picture of how the Schmitt Trigger output signal behaves with respect to low frequency input signal.

−	[[File:Tek00047.png \| ~~800px~~]]	+	[[File:Tek00047.png \| 700px]]

← Older revision		Revision as of 06:08, 28 April 2011
Line 101:		Line 101:
	Below my digital scope picture of how the Schmitt Trigger output signal behaves with respect to low frequency input signal.		Below my digital scope picture of how the Schmitt Trigger output signal behaves with respect to low frequency input signal.

−	[[File:Tek00047.png \| ~~700px~~]]	+	[[File:Tek00047.png \| 800px]]

@@ Line 57: / Line 57: @@
 ) if the output is high:
-  <math>V_2 = \frac{R_{123}}{R_2}V_{ref} + \frac{R_{123}}{R_3}V_{out_1}\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{high})</math>
+  <math>V_2 = \frac{R_{123}}{R_2}V_{ref} + \frac{R_{123}}{R_3}V_{out_1}</math>
 ) if the output is low:
-  <math>V_2^' = \frac{R_{123}}{R_2}V_{ref} - \frac{R_{123}}{R_3}V_{out_1}\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{low})</math>
+  <math>V_2^' = \frac{R_{123}}{R_2}V_{ref} - \frac{R_{123}}{R_3}V_{out_1}</math>
 where
@@ Line 86: / Line 86: @@
 and doing math and propagating errors we end up with the following predicted threshold voltages:
-) If the output voltage is high the threshold voltage is:
+ <math>V_2(\mbox{theory}) = (6.41\pm 0.07)\ V\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{high})</math>
-  <math>V_2(\mbox{theory}) = (6.41\pm 0.07)\ V </math>
+  <math>V_2^'(\mbox{theory}) = (4.47\pm 0.06)\ V\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{low})</math>
 They are in total agreement with measured ones within the calculated error above:
-) if the output voltage is high the threshold voltage is:
+  <math>V(\mbox{measured}) = (6.38\pm 0.01)\ V\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{high})</math>
-  <math>V^'(\mbox{measured}) = (4.48\pm 0.01)\ V</math>
+  <math>V^'(\mbox{measured}) = (4.48\pm 0.01)\ V\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{low})</math>
 =low-frequency input=

@@ Line 57: / Line 57: @@
 ) if the output is high:
-  <math>V_2 = \frac{R_{123}}{R_2}V_{ref} + \frac{R_{123}}{R_3}V_{out_1}</math>
+  <math>V_2 = \frac{R_{123}}{R_2}V_{ref} + \frac{R_{123}}{R_3}V_{out_1}\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{high})</math>
 ) if the output is low:
-  <math>V_2^' = \frac{R_{123}}{R_2}V_{ref} - \frac{R_{123}}{R_3}V_{out_1}</math>
+  <math>V_2^' = \frac{R_{123}}{R_2}V_{ref} - \frac{R_{123}}{R_3}V_{out_1}\ \ (\mbox{if}\ \mbox{the}\ \mbox{output}\ \mbox{is}\ \mbox{low})</math>
 where

← Older revision		Revision as of 06:04, 28 April 2011
Line 109:		Line 109:
	Below my digital scope picture of how the Schmitt Trigger output signal behaves with respect to low frequency input signal.		Below my digital scope picture of how the Schmitt Trigger output signal behaves with respect to low frequency input signal.

−	[[File:Tek00047.png \| ~~800px~~]]	+	[[File:Tek00047.png \| 700px]]

← Older revision		Revision as of 06:03, 28 April 2011
Line 95:		Line 95:


−	They are in total agreement with measured ones within the calculated ~~errors~~:	+	They are in total agreement with measured ones within the calculated error above:

	1) if the output voltage is high the threshold voltage is:		1) if the output voltage is high the threshold voltage is:

@@ Line 86: / Line 86: @@
 and doing math and propagating errors we end up with the following predicted threshold voltages:
-) If the output voltage is high the threshold voltage are:
+) If the output voltage is high the threshold voltage is:
   <math>V_2(\mbox{theory}) = (6.41\pm 0.07)\ V </math>
-) If the output voltage is low the threshold voltage are:
+) If the output voltage is low the threshold voltage is:
   <math>V_2^'(\mbox{theory}) = (4.47\pm 0.06)\ V </math>
-They are in total agreement with measured ones above within the calculated errors:
+They are in total agreement with measured ones within the calculated errors:
 =low-frequency input=

@@ Line 47: / Line 47: @@
 ) if the output voltage is low (<math>(10.53\pm 0.01)\ V</math>) my threshold voltage is:
-  <math>V = (4.48\pm 0.01)\ V</math>
+  <math>V^' = (4.48\pm 0.01)\ V</math>
 =Compare the threshold values to what is expected.=

@@ Line 12: / Line 12: @@
 # <math>R_1 = (1.01\pm0.01)\ k\Omega</math>
 # <math>R_2 = (1.01\pm0.01)\ k\Omega</math>
-# <math>R_3 = (5.10\pm0.01)\ k\Omega</math>
+# <math>R_3 = (5.10\pm0.05)\ k\Omega</math>
 # <math>\mbox{OP}\ \mbox{AMP}\ 741</math>
 # <math>V_{ref} = (+11.90\pm0.01)\ V</math>