High-Fidelity Audio Frequency Amplifier by N. Sukhov.

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STD High-Fidelity Audio Frequency Amplifier by N. Sukhov.

License: Public Domain

Mode:

Editors' pick

Update time： 2023-10-24 16:09:20

Creation time： 2021-10-21 00:50:04

Description

Sensitivity: 0.8V
Input impedance: 34 kOhm
Nominal power (8 Ohm): 100W
Dynamic power (4;2 Ohm): 200W
Slew rate (without R1C2 circuit): 4µs
Frequency response range at 0...-0.5dB level: 5...35000Hz
Frequency response deviation from linear, degrees, at frequencies, Hz: 20/+5; 35000/-5; 5/+45; 130000/-45
Damping factor in the range 5...35000Hz: >1000
Total harmonic distortion (THD): <0.001%
2nd harmonic coefficient on IHF load at 1000Hz frequency and 100W power: <0.0003% and 0.001 at 10kHz frequency.

Design Drawing

schematic diagram

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PCB

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BOM

ID	Name	Designator	Quantity
1	1u	C1,C5,C17	3
2	1200	C2	1
3	0.033u	C3,C15	2
4	10	C4,C16,C20	3
5	91	C6	1
6	0.1u	C7,C21	2
7	0,01u	C8	1
8	1uF100v	C9,C13	2
9	1.5uF100v	C10,C14	2
10	330	C11	1
11	0.01u	C12	1
12	0.15u	C18	1
13	470	C19	1
14	коннектор	CN1	1
15	к574уд1	DA1	1
16	к140уд6	DA2	1
17	к574уд1	DA3	1
18	контакты реле	KS1	1
19	LED	LED1	1
20	1k	R1,R3,R7,R11,R14,R15,R20	7
21	33k	R2,R35,R36	3
22	1k 1Вт	R4,R5	2
23	750	R6,R13	2
24	1m	R8	1
25	470	R9	1
26	15k 1Вт	R10	1
27	200	R12	1
28	51k	R16	1
29	75	R17	1
30	150	R18	1
31	10	R19,R23	2
32	2,2k	R21,R32	2
33	3,3k	R22	1
34	510	R24	1
35	51 0,5Вт	R25	1
36	3.3k	R26	1
37	1k 0,5Вт	R27	1
38	2.7k	R28	1
39	2.2m	R29	1
40	100k	R30,R31	2
41	10k	R33	1
42	20k	R34	1
43	0,33 5Вт	R37,R40	2
44	11 2Вт	R38	1
45	1k 1Вт	R39	1
46	DG381S-3.5-03P-14-00A(H)	U1,U2,U6	3
47	DG126-5.0-06P-14-00A(H)	U3,U4	2
48	DG381S-3.5-04P-14-00AH	U5	1
49	динамик	U7	1
50	КС213Б	VD1,VD2	2
51	1N4007	VD3,VD4,VD5,VD6	4
52	кт502г	VT1	1
53	кт503г	VT2	1
54	кт503е	VT3,VT9,VT10	3
55	кт502е	VT4,VT7,VT11	3
56	кт502	VT5	1
57	кт503а	VT6	1
58	кт817г	VT12	1
59	кт814г	VT13	1
60	кт816г	VT14	1
61	кт819г	VT15	1
62	кт818г	VT16	1