POLITECHNIKA ŚWIĘTOKRZYSKA |
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Laboratorium Podstaw Elektroniki |
Nr. Ćwiczenia: 7 |
Data wykonania ćwiczenia: 18.12.2014 |
Schematy połączeń:
Tabele pomiarowe
Lp. | Pomiar ch-ki amplitudowej wzmacniacza na tranzystorze bipolarnym Ku=Ku(f) |
---|---|
R0 = 10kΩ CE = 25µF | |
f[Hz] | |
1 | 20 |
2 | 50 |
3 | 100 |
4 | 200 |
5 | 500 |
6 | 1k |
7 | 2k |
8 | 5k |
9 | 10k |
10 | 20k |
11 | 50k |
12 | 100k |
13 | 200k |
14 | 500k |
15 | 1M |
16 | 2M |
17 | 5M |
18 | 10M |
Lp. | Pomiar ch-ki amplitudowej wzmacniacza na tranzystorze bipolarnym Ku=Ku(f) |
---|---|
R0 = 2,2kΩ CE = 25µF | |
f[Hz] | |
1 | 20 |
2 | 50 |
3 | 100 |
4 | 200 |
5 | 500 |
6 | 1k |
7 | 2k |
8 | 5k |
9 | 10k |
10 | 20k |
11 | 50k |
12 | 100k |
13 | 200k |
14 | 500k |
15 | 1M |
16 | 2M |
17 | 5M |
18 | 10M |
Lp. | Pomiar ch-ki amplitudowej wzmacniacza na tranzystorze bipolarnym Ku=Ku(f) |
---|---|
R0 = 10kΩ CE = ????µF | |
f[Hz] | |
1 | 20 |
2 | 50 |
3 | 100 |
4 | 200 |
5 | 500 |
6 | 1k |
7 | 2k |
8 | 5k |
9 | 10k |
10 | 20k |
11 | 50k |
12 | 100k |
13 | 200k |
14 | 500k |
15 | 1M |
16 | 2M |
17 | 5M |
18 | 10M |
Lp. | Pomiar ch-ki fazowej wzmacniacza na tranzystorze bipolarnym Ku=Ku(f) |
---|---|
R0 = 10kΩ C2 = 25µF | |
f[Hz] | |
1 | 20 |
2 | 50 |
3 | 100 |
4 | 200 |
5 | 500 |
6 | 1k |
7 | 2k |
8 | 5k |
9 | 10k |
10 | 20k |
11 | 50k |
12 | 100k |
13 | 200k |
14 | 500k |
15 | 1M |
16 | 2M |
17 | 5M |
18 | 10M |
Przykładowe obliczenia
$$U = \frac{U_{\text{wymax}}}{\sqrt{2}} = \frac{2,76V}{\sqrt{2}} = 1,951V$$
$$k_{u} = \frac{U_{\text{wy}}}{U_{\text{we}}} = \frac{0,14V}{0,41V} = 0,341\frac{V}{V}$$
Ku = 20 * log(ku) = 20 * log(0,341) = −9, 33dB
Przebiegi z oscyloskopu
Wnioski