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Overview

TERETYK
Mostek
Real

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Sheet 1: TERETYK

Teoretyczna moc wzmacniacza na tranzystorach MOSFET
Usk zmienne	+Ucc -Ucc[V]	Ucc -18% przy max. mocy	Ucc s.-2V = Uwy ampl.	U wy skut	U wy2	P 4om [W]	Jsk 4om[A]	P 8om [W]	Jsk 8om[A]		Ucc-U/Dson tu przyjąłem spadek w %	P nom 4om	P nom 8om
19.0	26.79	21.97	19.97	14.16	200.55	50	3.54	31	2.16		20.20	51.30	31.29
20.0	28.20	23.12	21.12	14.98	224.45	56	3.75	34	2.28		21.25	56.79	34.64
21.0	29.61	24.28	22.28	15.80	249.69	62	3.95	38	2.41		22.31	62.56	38.16
22.0	31.02	25.44	23.44	16.62	276.28	69	4.16	42	2.53		23.36	68.61	41.85
23.0	32.43	26.59	24.59	17.44	304.21	76	4.36	46	2.66		24.41	74.94	45.71
24.0	33.84	27.75	25.75	18.26	333.48	83	4.57	51	2.78		25.47	81.55	49.75
25.0	35.25	28.91	26.91	19.08	364.11	91	4.77	56	2.91		26.52	88.44	53.95
26.0	36.66	30.06	28.06	19.90	396.07	99	4.98	60	3.03		27.57	95.61	58.32
27.0	38.07	31.22	29.22	20.72	429.38	107	5.18	65	3.16		28.63	103.05	62.86
28.0	39.48	32.37	30.37	21.54	464.04	116	5.39	71	3.29		29.68	110.78	67.57
29.0	40.89	33.53	31.53	22.36	500.04	125	5.59	76	3.41		30.73	118.78	72.46
30.0	42.30	34.69	32.69	23.18	537.38	134	5.80	82	3.54		31.79	127.07	77.51
31.0	43.71	35.84	33.84	24.00	576.07	144	6.00	88	3.66		32.84	135.63	82.74
32.0	45.12	37.00	35.00	24.82	616.11	154	6.21	94	3.79		33.90	144.47	88.13
33.0	46.53	38.15	36.15	25.64	657.49	164	6.41	100	3.91		34.95	153.60	93.69
34.0	47.94	39.31	37.31	26.46	700.21	175	6.62	107	4.04		36.00	163.00	99.43
35.0	49.35	40.47	38.47	27.28	744.28	186	6.82	114	4.16		37.06	172.68	105.33
36.0	50.76	41.62	39.62	28.10	789.70	197	7.03	120	4.29		38.11	182.64	111.41
37.0	52.17	42.78	40.78	28.92	836.46	209	7.23	128	4.41		39.16	192.88	117.65
38.0	53.58	43.94	41.94	29.74	884.56	221	7.44	135	4.54		40.22	203.40	124.07
39.0	54.99	45.09	43.09	30.56	934.01	234	7.64	142	4.66		41.27	214.19	130.66
40.0	56.40	46.25	44.25	31.38	984.80	246	7.85	150	4.79		42.33	225.27	137.41
41.0	57.81	47.40	45.40	32.20	1036.94	259	8.05	158	4.91		43.38	236.63	144.34
42.0	59.22	48.56	46.56	33.02	1090.42	273	8.26	166	5.04		44.43	248.26	151.44
43.0	60.63	49.72	47.72	33.84	1145.25	286	8.46	175	5.16		45.49	260.17	158.71
44.0	62.04	50.87	48.87	34.66	1201.42	300	8.67	183	5.29		46.54	272.37	166.14
45.0	63.45	52.03	50.03	35.48	1258.94	315	8.87	192	5.41		47.59	284.84	173.75
46.0	64.86	53.19	51.19	36.30	1317.80	329	9.08	201	5.54		48.65	297.59	181.53
47.0	66.27	54.34	52.34	37.12	1378.01	345	9.28	210	5.66		49.70	310.62	189.48
48.0	67.68	55.50	53.50	37.94	1439.56	360	9.49	220	5.79		50.75	323.93	197.60
49.0	69.09	56.65	54.65	38.76	1502.46	376	9.69	229	5.91		51.81	337.52	205.89
50.0	70.50	57.81	55.81	39.58	1566.70	392	9.90	239	6.04		52.86	351.39	214.35
51.0	71.91	58.97	56.97	40.40	1632.29	408	10.10	249	6.16		53.92	365.54	222.98
52.0	73.32	60.12	58.12	41.22	1699.22	425	10.31	259	6.29		54.97	379.97	231.78
53.0	74.73	61.28	59.28	42.04	1767.49	442	10.51	270	6.41		56.02	394.68	240.75
54.0	76.14	62.43	60.43	42.86	1837.11	459	10.72	280	6.54		57.08	409.66	249.89
55.0	77.55	63.59	61.59	43.68	1908.08	477	10.92	291	6.66		58.13	424.93	259.21
56.0	78.96	64.75	62.75	44.50	1980.39	495	11.13	302	6.79		59.18	440.47	268.69
57.0	80.37	65.90	63.90	45.32	2054.04	514	11.33	313	6.91		60.24	456.30	278.34
58.0	81.78	67.06	65.06	46.14	2129.04	532	11.54	325	7.04		61.29	472.40	288.16
59.0	83.19	68.22	66.22	46.96	2205.39	551	11.74	336	7.16		62.35	488.78	298.16
60.0	84.60	69.37	67.37	47.78	2283.08	571	11.95	348	7.29		63.40	505.44	308.32
61.0	86.01	70.53	68.53	48.60	2362.11	591	12.15	360	7.41		64.45	522.38	318.65
		toro 500W-10%
38.0	51.68	46.512	44.51	31.57	996.6	249	7.89	152	4.81		42.57	227.84	138.98
Ten ostatni wynik jest osiągnięty w praktyce na dwóch IRFP250 , a moce odpowiadały (prawie) tym na szarym tle.
Więc jak by nie liczył, to rzeczywista moc będzie zawsze trochę mniejsza od tej teoretycznie oblczonej,
chyba , że uwzględnimy wszelkie czynniki, mające wpływ na straę mocy, np. Temperaturę, tętnienia, rezystancje
przewodów zasilających i głośnikowych itp. , długo można wymieniać. Przejdź do zakładki Real - tam jest na bazie praktyki.

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Sheet 2: Mostek

MOSFET mostek
U zmienne sk	+/-Ucc - straty [V]	Ucc -20%przy max. mocy	Ucc s.-4V = Uwy ampl.	U wy skut	U2 wy skut.	P 4om [W]	Jsk 4om[A]	Ipik 4om	P 8om [W]	Jsk 8om[A]	Ipik 8om
18.0	24.66	19.73	15.73	22.31	497.701290679543	124	5.58	7.9	76	3.40	4.8
20.0	27.40	21.92	17.92	25.42	646.09707761179	162	6.35	9.0	99	3.88	5.5
21.0	28.77	23.02	19.02	26.97	727.545407172677	182	6.74	9.5	111	4.11	5.8
22.0	30.14	24.11	20.11	28.53	813.827360796741	203	7.13	10.056	124	4.35	6.1
23.0	31.51	25.21	21.21	30.08	904.94293848398	226	7.52	10.6	138	4.59	6.5
24.0	32.88	26.30	22.30	31.64	1000.89214023439	250	7.91	11.152	153	4.82	6.8
25.0	34.25	27.40	23.40	33.19	1101.67496604799	275	8.30	11.7	168	5.06	7.1
26.0	35.62	28.50	24.50	34.75	1207.29141592475	302	8.69	12.248	184	5.30	7.5
30.0	41.10	32.88	28.88	40.96	1678.09345606358	420	10.24	14.44	256	6.25	8.8
32.0	43.84	35.07	31.07	44.07	1942.49622051205	486	11.02	15.5	296	6.72	9.5
35.0	47.95	38.36	34.36	48.74	2375.35254765857	594	12.18	17.18	362	7.43	10.5
38.0	52.06	41.65	37.65	53.40	2851.71149137367	713	13.35	18.824	435	8.14	11.5
40.0	54.80	43.84	39.84	56.51	3193.45224083296	798	14.13	19.92	487	8.62	12.2
		toro500W-13%
38.0	52.06	45.29	41.29	58.57	3430.50305485639	858	14.64	20.6461	523	8.93	12.6

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Sheet 3: Real

Prawie realna moc wzmacniacza na tranzystorach MOSFET
Usk zmienne	+/-Ucc -3% na Jo [V]	Ucc -17% spadek przy max. mocy	Saturation Ucc -3V Uwy ampl.	U wy skut	Jsk 4om[A]	Jpik 4om [A]	Jsk 8om [A]	Jpik 8om [A]	P nom 4om	P nom 8om	Oblczenie R do zabezpieczenia 4om [om]
19.0	26.22	21.76	18.76	13.31	3.33	4.69	2.03	2.86	44.27	27.00	0.149
20.0	27.60	22.91	19.91	14.12	3.53	4.98	2.15	3.04	49.84	30.40	0.141
21.0	28.98	24.05	21.05	14.93	3.73	5.26	2.28	3.21	55.74	34.00	0.133
22.0	30.36	25.20	22.20	15.74	3.94	5.55	2.40	3.39	61.97	37.80	0.126
23.0	31.74	26.34	23.34	16.56	4.14	5.84	2.52	3.56	68.53	41.80	0.120
24.0	33.12	27.49	24.49	17.37	4.34	6.12	2.65	3.73	75.42	46.00	0.114
25.0	34.50	28.64	25.64	18.18	4.55	6.41	2.77	3.91	82.64	50.41	0.109
26.0	35.88	29.78	26.78	18.99	4.75	6.70	2.90	4.08	90.19	55.01	0.105
27.0	37.26	30.93	27.93	19.81	4.95	6.98	3.02	4.26	98.06	59.82	0.100
28.0	38.64	32.07	29.07	20.62	5.15	7.27	3.14	4.43	106.27	64.83	0.096
29.0	40.02	33.22	30.22	21.43	5.36	7.55	3.27	4.61	114.81	70.04	0.093
30.0	41.40	34.36	31.36	22.24	5.56	7.84	3.39	4.78	123.68	75.45	0.089
31.0	42.78	35.51	32.51	23.05	5.76	8.13	3.52	4.96	132.88	81.06	0.086
32.0	44.16	36.65	33.65	23.87	5.97	8.41	3.64	5.13	142.41	86.87	0.083
33.0	45.54	37.80	34.80	24.68	6.17	8.70	3.76	5.31	152.27	92.88	0.080
34.0	46.92	38.94	35.94	25.49	6.37	8.99	3.89	5.48	162.46	99.10	0.078
35.0	48.30	40.09	37.09	26.30	6.58	9.27	4.01	5.66	172.98	105.52	0.075
36.0	49.68	41.23	38.23	27.12	6.78	9.56	4.14	5.83	183.83	112.13	0.073
37.0	51.06	42.38	39.38	27.93	6.98	9.84	4.26	6.01	195.01	118.95	0.071
38.0	52.44	43.53	40.53	28.74	7.19	10.13	4.38	6.18	206.52	125.97	0.069
39.0	53.82	44.67	41.67	29.55	7.39	10.42	4.51	6.35	218.35	133.20	0.067
40.0	55.20	45.82	42.82	30.37	7.59	10.70	4.63	6.53	230.52	140.62	0.065
41.0	56.58	46.96	43.96	31.18	7.79	10.99	4.75	6.70	243.02	148.24	0.064
42.0	57.96	48.11	45.11	31.99	8.00	11.28	4.88	6.88	255.85	156.07	0.062
43.0	59.34	49.25	46.25	32.80	8.20	11.56	5.00	7.05	269.01	164.10	0.061
44.0	60.72	50.40	47.40	33.62	8.40	11.85	5.13	7.23	282.50	172.32	0.059
45.0	62.10	51.54	48.54	34.43	8.61	12.14	5.25	7.40	296.32	180.75	0.058
46.0	63.48	52.69	49.69	35.24	8.81	12.42	5.37	7.58	310.46	189.38	0.056
47.0	64.86	53.83	50.83	36.05	9.01	12.71	5.50	7.75	324.94	198.22	0.055
48.0	66.24	54.98	51.98	36.86	9.22	12.99	5.62	7.93	339.75	207.25	0.054
49.0	67.62	56.12	53.12	37.68	9.42	13.28	5.75	8.10	354.89	216.48	0.053
50.0	69.00	57.27	54.27	38.49	9.62	13.57	5.87	8.28	370.36	225.92	0.052
51.0	70.38	58.42	55.42	39.30	9.83	13.85	5.99	8.45	386.16	235.56	0.051
52.0	71.76	59.56	56.56	40.11	10.03	14.14	6.12	8.63	402.28	245.39	0.050
53.0	73.14	60.71	57.71	40.93	10.23	14.43	6.24	8.80	418.74	255.43	0.049
54.0	74.52	61.85	58.85	41.74	10.43	14.71	6.37	8.97	435.53	265.67	0.048
55.0	75.90	63.00	60.00	42.55	10.64	15.00	6.49	9.15	452.65	276.12	0.047
56.0	77.28	64.14	61.14	43.36	10.84	15.29	6.61	9.32	470.10	286.76	0.046
57.0	78.66	65.29	62.29	44.18	11.04	15.57	6.74	9.50	487.87	297.60	0.045
58.0	80.04	66.43	63.43	44.99	11.25	15.86	6.86	9.67	505.98	308.65	0.044
59.0	81.42	67.58	64.58	45.80	11.45	16.14	6.98	9.85	524.42	319.90	0.043
60.0	82.80	68.72	65.72	46.61	11.65	16.43	7.11	10.02	543.19	331.34	0.043
61.0	84.18	69.87	66.87	47.43	11.86	16.72	7.23	10.20	562.29	342.99	0.042
62.0	85.56	71.01	68.01	48.24	12.06	17.00	7.36	10.37	581.71	354.84	0.041
63.0	86.94	72.16	69.16	49.05	12.26	17.29	7.48	10.55	601.47	366.90	0.040
64.0	88.32	73.31	70.31	49.86	12.47	17.58	7.60	10.72	621.56	379.15	0.040
65.0	89.70	74.45	71.45	50.67	12.67	17.86	7.73	10.90	641.98	391.61	0.039
66.0	91.08	75.60	72.60	51.49	12.87	18.15	7.85	11.07	662.72	404.26	0.039
67.0	92.46	76.74	73.74	52.30	13.07	18.44	7.98	11.25	683.80	417.12	0.038
68.0	93.84	77.89	74.89	53.11	13.28	18.72	8.10	11.42	705.21	430.18	0.037
69.0	95.22	79.03	76.03	53.92	13.48	19.01	8.22	11.59	726.94	443.44	0.037
70.0	96.60	80.18	77.18	54.74	13.68	19.29	8.35	11.77	749.01	456.90	0.036
71.0	97.98	81.32	78.32	55.55	13.89	19.58	8.47	11.94	771.41	470.56	0.036
72.0	99.36	82.47	79.47	56.36	14.09	19.87	8.60	12.12	794.14	484.42	0.035
73.0	100.74	83.61	80.61	57.17	14.29	20.15	8.72	12.29	817.19	498.49	0.035
74.0	102.12	84.76	81.76	57.99	14.50	20.44	8.84	12.47	840.58	512.75	0.034
75.0	103.50	85.91	82.91	58.80	14.70	20.73	8.97	12.64	864.30	527.22	0.034
76.0	104.88	87.05	84.05	59.61	14.90	21.01	9.09	12.82	888.34	541.89	0.033
77.0	106.26	88.20	85.20	60.42	15.11	21.30	9.21	12.99	912.72	556.76	0.033
78.0	107.64	89.34	86.34	61.23	15.31	21.59	9.34	13.17	937.43	571.83	0.032
79.0	109.02	90.49	87.49	62.05	15.51	21.87	9.46	13.34	962.46	587.10	0.032
80.0	110.40	91.63	88.63	62.86	15.71	22.16	9.59	13.52	987.83	602.58	0.032
81.0	111.78	92.78	89.78	63.67	15.92	22.44	9.71	13.69	1013.53	618.25	0.031
82.0	113.16	93.92	90.92	64.48	16.12	22.73	9.83	13.87	1039.55	634.13	0.031
83.0	114.54	95.07	92.07	65.30	16.32	23.02	9.96	14.04	1065.91	650.21	0.030
84.0	115.92	96.21	93.21	66.11	16.53	23.30	10.08	14.22	1092.60	666.48	0.030
85.0	117.30	97.36	94.36	66.92	16.73	23.59	10.21	14.39	1119.61	682.96	0.030
86.0	118.68	98.50	95.50	67.73	16.93	23.88	10.33	14.56	1146.96	699.65	0.029
87.0	120.06	99.65	96.65	68.55	17.14	24.16	10.45	14.74	1174.64	716.53	0.029
88.0	121.44	100.80	97.80	69.36	17.34	24.45	10.58	14.91	1202.64	733.61	0.029
89.0	122.82	101.94	98.94	70.17	17.54	24.74	10.70	15.09	1230.98	750.90	0.028
90.0	124.20	103.09	100.09	70.98	17.75	25.02	10.82	15.26	1259.65	768.38	0.028
91.0	125.58	104.23	101.23	71.80	17.95	25.31	10.95	15.44	1288.64	786.07	0.028
92.0	126.96	105.38	102.38	72.61	18.15	25.59	11.07	15.61	1317.97	803.96	0.027
93.0	128.34	106.52	103.52	73.42	18.36	25.88	11.20	15.79	1347.62	822.05	0.027
94.0	129.72	107.67	104.67	74.23	18.56	26.17	11.32	15.96	1377.61	840.34	0.027
95.0	131.10	108.81	105.81	75.04	18.76	26.45	11.44	16.14	1407.93	858.83	0.026
96.0	132.48	109.96	106.96	75.86	18.96	26.74	11.57	16.31	1438.57	877.53	0.026
97.0	133.86	111.10	108.10	76.67	19.17	27.03	11.69	16.49	1469.55	896.42	0.026
98.0	135.24	112.25	109.25	77.48	19.37	27.31	11.82	16.66	1500.85	915.52	0.026
99.0	136.62	113.39	110.39	78.29	19.57	27.60	11.94	16.84	1532.49	934.82	0.025
100.0	138.00	114.54	111.54	79.11	19.78	27.89	12.06	17.01	1564.45	954.32	0.025
Komentarz
1. Napięcie zmienne po wyprostowaniu wcale nie równa się U~ x 1,41 - jest mniejsze, bo zawsze jest jakiś pobór prądu.
2. Spadek napięcia pod obciążeniem zależy od trafa. Dla dużych (mocowo) jest mały i na odwrót. Ja przyjąłem średnio -17%.
3. Spadek napięcia na otwartym tranzystorze wyjściowym plus spadek napięcia na rezystorze źródłowym to ok. 3V.
4. Reszta to typowe prawo Ohma. (kliknij na dowolną komórkę, a zobaczysz jaka jest formuła).