Small Hi-Fi headphone amplifier, hi-fi headphone amplifier
Keywords: HIFI headphone amplifier production
There have been a lot of circuit diagrams in the website. The purpose of the website is to maintain my love for electronics, and can share some collected circuits, let some DIY has the source of information, if everyone has a heart It will be found that many circuit diagrams are more clear than others, because I spent time to fix some pictures, I have someone to call me in a few days, I have to sell the suite? I started to make another time, do it. verification circuit design suite. If you have a memory, there is a circuit diagram "small immersive headphone amplifier (NE5532)", which is a circuit from Germany, very few number of parts, from which it started.
Many people hobbily hobbily hobbies, but hindering funds and experience, but in order to DIY, in order to round some of the small sounds, I tried to do the previous circuit, first using a multimeter. channel, a few minutes on the well, this circuit is actually a good selling in Germany headphone amplifier, the evaluation on the web is not bad, but good or bad headphone headphone amplifier in which to play for in terms of the role it Do not view, I use the AUDIO CD ROM as your audio output, with my SONY MD moderate headset attached to the test machine and found that the power of this circuit is not large, but the sound is very resistant to listen, but I personally feel like the treble The performance is flat, and then look at the ordinary headset. The treble is not good. Taking my experience, the general earphones and advanced headphones are not some of the X-BASS heavy and lower sounds in some advertising nouns. the most obvious but most can not clear treble performance, but not excessive, on the grounds that not everyone can afford a good headset, I did a little bit of the circuit changes, so we can not buy you can hear more perfect treble when the headset from the high order, and when you can afford the time and restore the true nature of the circuit. After the revision, I really have a different feeling right away. I have this effect with my medium earphone. When you are finished, you can try it, install the JP1A and JP1B, and the difference is not installed. In addition to the obvious difference, because the circuit also includes a large sound quality adjustment (TONE CONTROL), also can adjust your favorite audio quality.
In the cost of these materials, it is really a value for money. It is like the current high C / P value in computer magazine, and does not know why the original plant is so expensive. The OP amp used in this circuit is NE5532, in fact there are many other OP also good to see personal favorite, the position of the use of IC OP seat, you can try another brand or OP, such as TL082, OP2134, etc. ... to see the replacement.
Board is also good design, a finished product he is finished, in order to meet the selection had a lot of design and ease of installation of the circuit board, part of the effort, such as large, small headphone socket, RCA etc. ... input terminal, further in order to maintain the quality Hi-Fi, the choice of resistance of the resistance of the metal film, and adding a blue LED as a power indicator, the power input from the outside via the input socket, the kit comprising a rectifier transformer is not ready, to see their own not previously used and now without power rectifier transformer as long as the output voltage between the range of 12 ~ 18V, current above 300mA on it, I myself have often picked up in the garbage in the community.
◎ The following is a modified circuit diagram, artwork can be downloaded to a circuit comparing the collection area to see what is the difference?
Parts List
IC1
TL082 or NE5532
C01, C02
10uF / 50V
R1, R2
10k
C03, C04
472
R3, R4
100k
C05, C06
101
R5, R6
47Ω / 0.5W
C07, C08
47uF / 63V
R7, R8
10k
C09
100uF / 35V
R9, R10
10K
C10
1000uF / 35V
R11
2.2K
C11
104
R12, R13
2.21K
Cx1, Cx2
472
led
5mm blue
W1, W2
VR 10K double
D1
IN4002
W3, W4
VR 100K double
JP1A, JP1B
Jumper (Jumper)
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After a lot of efforts to make the work, especially the design library spent most of the time, but the results were pretty good, after all, be able to have such a quality lower cost so little of the case, be worth the price, I'll do a few pieces of circuit board, but we ask insufficient number of factories making, had handmade oneself, drilling, plus parts became suite, DIY and trying to share, save you some time. I have not calculated the cost, but I estimate no more than NT $ 400 million, of course, you have to own the cost of mailing out! Be
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Part configured as follows:
Since the upper seat may buy FIG RCA, and following a change of another type suitable for use LAYOUT 4 RCA jack board, refer to.
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