Lab 8 RS - Revision history

Shaproma: /* Reverse current */

2011-02-23T17:25:46Z

Reverse current

2011-02-23T17:25:09Z

Reverse current

2011-02-23T17:22:19Z

Questions

2011-02-20T06:48:34Z

Show and tell

2011-02-20T06:40:41Z

Show and tell

2011-02-20T06:40:22Z

Show and tell

2011-02-20T06:37:47Z

Show and tell

2011-02-20T06:37:24Z

Show and tell

2011-02-20T06:37:01Z

Show and tell

2011-02-20T06:24:54Z

Questions

← Older revision		Revision as of 17:25, 23 February 2011
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−	5.) Fill in the blank. The reverse biased diode acts as a constant '''current''' source before the turn on voltage. As we can see from the plot below it keeps the constant current before the turn on voltage point.And it acts as a constant '''voltage''' source beyond the turn on voltage. As we can see from the plot below it keeps the constant voltage beyond the turn on voltage point(5 pnts)	+	5.) Fill in the blank. The reverse biased diode acts as a constant '''current''' source before the turn on voltage. As we can see from the plot below it keeps the constant current before the turn on voltage point. And it acts as a constant '''voltage''' source beyond the turn on voltage. As we can see from the plot below it keeps the constant voltage beyond the turn on voltage point(5 pnts)

	=Forward Current=		=Forward Current=

← Older revision		Revision as of 17:25, 23 February 2011
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−	5.) Fill in the blank. The reverse biased diode ~~act~~ as a constant '''current''' source. As we can see from the plot below it keeps the constant current before the turn on voltage point.(5 pnts)	+	5.) Fill in the blank. The reverse biased diode acts as a constant '''current''' source before the turn on voltage. As we can see from the plot below it keeps the constant current before the turn on voltage point.And it acts as a constant '''voltage''' source beyond the turn on voltage. As we can see from the plot below it keeps the constant voltage beyond the turn on voltage point(5 pnts)

	=Forward Current=		=Forward Current=

← Older revision		Revision as of 17:22, 23 February 2011
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−	2.)The measured reverse biased turn on voltage is _________ Volts for silicon diode type # IN_____________. The % difference between the measured turn on voltage and the one given in the specification is __________%. Circle the correct answer in the parentheses. This % difference (is / is not) within the measurement uncertainty. ( 10 pnts)	+	2.)The measured reverse biased turn on voltage is _________ Volts for silicon diode type # IN_____________. The % difference between the measured turn on voltage and the one given in the specification is __________%. Circle the correct answer in the parentheses. This % difference (is / is not) within the measurement uncertainty. ( 10 pnts). See the answer below.

← Older revision		Revision as of 06:48, 20 February 2011
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−	[[File:L8 LED.png \| 1000 px ]]	+	[[File:L8 LED m1.png \| 1000 px ]]

	The LED starts to illuminate <math>V_{LED} = 1.869\ [V]</math> and illumination becomes stable and bright at about <math>V_{LED} = 1.890\ [V]</math>		The LED starts to illuminate <math>V_{LED} = 1.869\ [V]</math> and illumination becomes stable and bright at about <math>V_{LED} = 1.890\ [V]</math>

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 [[File:L8 LED.png | 1000 px ]]
-  The LED starts to illuminate <math>V_{LED} = 1.869\ [V]</math> and illumination becomes stable and bright at about <math>V_{LED} = 1.890\ [V]</math> that corresponds to <math>2\ -\ 3\ mA</math> current through the LED
+  The LED starts to illuminate <math>V_{LED} = 1.869\ [V]</math> and illumination becomes stable and bright at about <math>V_{LED} = 1.890\ [V]</math>
 [[Forest_Electronic_Instrumentation_and_Measurement]]
 [https://wiki.iac.isu.edu/index.php/Electronics_RS Go Back to All Lab Reports]

← Older revision		Revision as of 06:37, 20 February 2011
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	2.) Create a circuit to cause an LED to illuminate.		2.) Create a circuit to cause an LED to illuminate.

−	I just replaced the diode 1N5230B-T with the red LED LN21RPH. The plot below represents the forward current versus applied voltage.	+	I just replaced the diode 1N5230B-T with the red LED LN21RPH. The plot below represents the forward current versus the applied voltage.

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 .) Plot the forward biased diode  and measure the effective impedance of the diode using a linear fit in the linear region at large bias voltages. ( 20 pnts)
-[[File:L8 diod forvard.png |100 px]]
+[[File:L8 diod forvard.png | 1000 px]]
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   <math>R=\frac{1}{p_1}\ \left[ \frac{V}{mA} \right] = \frac{1}{(868.6\pm 70.71)}\ k\Omega = (1.15\pm 0.09)\ \Omega</math>
 =Show and tell=