Difference between revisions of "Lab 13 RS"
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|mV || mV || V || mV || mV || <math>\Omega</math> || k<math>\Omega</math>|| mA|| <math>\mu A</math>|| <math>mW</math> | |mV || mV || V || mV || mV || <math>\Omega</math> || k<math>\Omega</math>|| mA|| <math>\mu A</math>|| <math>mW</math> | ||
|- | |- | ||
− | |<math>41.5\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>0.0\pm 1</math>||<math>40\pm 2</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||0.40±0.02 ||2.02±0.18 | + | |<math>41.5\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>0.0\pm 1</math>||<math>40\pm 2</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||0.40±0.02 ||2.02±0.18|| 0.00±0.40 |
|- | |- | ||
− | |<math>106.7\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>4.0\pm 1</math>||<math>100\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||1.00±0.05 ||2.02±0.18 | + | |<math>106.7\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>4.0\pm 1</math>||<math>100\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||1.00±0.05 ||2.02±0.18 || 4.00±1.02 |
|- | |- | ||
− | |<math>142.0\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>10.0\pm 1</math>||<math>140\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||1.40±0.05 ||2.02±0.18 | + | |<math>142.0\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>10.0\pm 1</math>||<math>140\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||1.40±0.05 ||2.02±0.18 || 14.00±1.49 |
|- | |- | ||
− | |<math>170.8\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>16.0\pm 1</math>||<math>170\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||1.70±0.05 ||2.02±0.18 | + | |<math>170.8\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>16.0\pm 1</math>||<math>170\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||1.70±0.05 ||2.02±0.18 || 27.20±1.88 |
|- | |- | ||
− | |<math>204.9\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>22.0\pm 1</math>||<math>200\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||2.00±0.05 ||2.02±0.18 | + | |<math>204.9\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>22.0\pm 1</math>||<math>200\pm 5</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||2.00±0.05 ||2.02±0.18 || 44.00±2.29 |
|- | |- | ||
− | |<math>233.0\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>26.0\pm 1</math>||<math>240\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||2.4±0.10 ||2.02±0.18 | + | |<math>233.0\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>26.0\pm 1</math>||<math>240\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||2.4±0.10 ||2.02±0.18 || 62.40±3.55 |
|- | |- | ||
− | |<math>266.2\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>28.0\pm 1</math>||<math>260\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||2.60±0.10 ||2.02±0.18 | + | |<math>266.2\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>28.0\pm 1</math>||<math>260\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||2.60±0.10 ||2.02±0.18 || 72.80±3.84 |
|- | |- | ||
− | |<math>296.1\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>300\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||3.00±0.10 ||2.02±0.18 | + | |<math>296.1\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>300\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||3.00±0.10 ||2.02±0.18 || 87.00±4.20 |
|- | |- | ||
− | |<math>338.0\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>340\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||3.40±0.10 ||2.02±0.18 | + | |<math>338.0\pm 0.5</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>340\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||3.40±0.10 ||2.02±0.18 || 98.60±4.50 |
|- | |- | ||
− | |<math>406.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>400\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||4.00±0.10 ||2.02±0.18 | + | |<math>406.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>400\pm 10</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||4.00±0.10 ||2.02±0.18 || 116.00±4.97 |
|- | |- | ||
− | |<math>554.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>560\pm 20</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||5.60±0.20 ||2.02±0.18 | + | |<math>554.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>29.0\pm 1</math>||<math>560\pm 20</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||5.60±0.20 ||2.02±0.18 || 162.40±8.10 |
|- | |- | ||
− | |<math>809.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>30.0\pm 1</math>||<math>800\pm 20</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||8.00±0.20 ||2.02±0.18 | + | |<math>809.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>30.0\pm 1</math>||<math>800\pm 20</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||8.00±0.20 ||2.02±0.18 || 240.00±10.07 |
|- | |- | ||
− | |<math>1041.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>30.0\pm 1</math>||<math>1000\pm 50</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||10.00±0.50 ||2.02±0.18 | + | |<math>1041.0\pm 2.0</math>||<math>600\pm 50</math>||<math>1.6\pm 0.05</math>||<math>30.0\pm 1</math>||<math>1000\pm 50</math>||<math>100\pm 0.5</math>||<math>494.7\pm 0.5</math>||10.00±0.50 ||2.02±0.18 || 300.00±18.09 |
|} | |} | ||
Revision as of 05:58, 11 March 2011
DC Bipolar Transistor Curves
Data sheet for transistors.
Media:2N3904.pdfMedia:2N3906.pdf
Using 2N3904 is more srtaight forward in this lab.
Transistor circuit
Identify the type (n-p-n or p-n-p) of transistor you are using and fill in the following specifications.
I am going to use n-p-n transistor 2N3904. Below are some specifications from data shits for this type of transistor:
Value | Description | ||
---|---|---|---|
Collector-Base breakdown voltage | |||
Emitter-Base Breakdown Voltage | |||
Maximum Collector-Emitter Voltage | |||
Maximum Collector-Emitter Voltage | |||
Maximum Collector Current - Continuous | |||
Transistor Power rating( | )|||
, | |||
40 | 300 | , | |
70 | 300 | , | |
100 | 300 | , | |
60 | 300 | , | |
30 | 300 | , |
Construct the circuit below according to the type of transistor you have.
Let .
variable power supply
.
Find the resistors you need to have
, , and
By measurements I was able to find that
. So I am going to use this value. Also let picks up . So my current .Now to getI need to use To get I need to use To get I need to use
Measure the emitter current for several values of by changing such that the base current A is constant.
mV | mV | V | mV | mV | k | mA | |||
0.40±0.02 | 2.02±0.18 | 0.00±0.40 | |||||||
1.00±0.05 | 2.02±0.18 | 4.00±1.02 | |||||||
1.40±0.05 | 2.02±0.18 | 14.00±1.49 | |||||||
1.70±0.05 | 2.02±0.18 | 27.20±1.88 | |||||||
2.00±0.05 | 2.02±0.18 | 44.00±2.29 | |||||||
2.4±0.10 | 2.02±0.18 | 62.40±3.55 | |||||||
2.60±0.10 | 2.02±0.18 | 72.80±3.84 | |||||||
3.00±0.10 | 2.02±0.18 | 87.00±4.20 | |||||||
3.40±0.10 | 2.02±0.18 | 98.60±4.50 | |||||||
4.00±0.10 | 2.02±0.18 | 116.00±4.97 | |||||||
5.60±0.20 | 2.02±0.18 | 162.40±8.10 | |||||||
8.00±0.20 | 2.02±0.18 | 240.00±10.07 | |||||||
10.00±0.50 | 2.02±0.18 | 300.00±18.09 |
Repeat the previous measurements for A. Remember to keep so the transistor doesn't burn out
V_{CC} | V_B | V_{BB} | V_ {EC} | V_ E | R_E | R_B | I_E | I_B |
mV | mV | V | mV | mV | k | mA | \muA | |
5.) Graph
-vs- for each value of and above. (40 pnts)6.) Overlay points from the transistor's data sheet on the graph in part 5.).(10 pnts)
Questions
- Compare your measured value of or for the transistor to the spec sheet? (10 pnts)
- What is for the transistor?(10 pnts)
- The base must always be more _________(________) than the emitter for a npn (pnp)transistor to conduct I_C.(10 pnts)
- For a transistor to conduct I_C the base-emitter junction must be ___________ biased.(10 pnts)
- For a transistor to conduct I_C the collector-base junction must be ___________ biased.(10 pnts)
Extra credit
Measure the Base-Emmiter breakdown voltage. (10 pnts)
I expect to see a graph and a linear fit which is similar to the forward biased diode curves. Compare your result to what is reported in the data sheet.
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