AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Today, I will share you something about power amplifier. 1. From the printed fonts: the authentic fonts are well-proportioned and the writing isn't easy to be removed, along with the fake fonts are like the ones written on it. The gentle rubbing the fingernails will create the writing color lighter or even the paint. clear. In the branding of this package press: English letters and numbers are printed on either side of the good screw hole close to the top region of the tube. Along with also the words of different producers or nations are printed in the center of the lower section near the trap, such as SK (three Ken), PHILIPPINES (Philippines), MALAYSIA (Malaysia), etc.. The fakes are not printed, or so the prints over the above two things are nasty and nasty, and these points are not published due to the term position. Of course, a number of the joint ventures have no prints here, however there are no obvious differences between them as well as the original tubes. 3. From the perspective of the packaging and processing technologies of this power amplifier tube: the boundary between the heat sink as well as the package plastic of the real product is crystal clear and the corner is horizontal, and the boundary of this bond of the imitation merchandise is cloudy or even has a gap (the market is the The easy-to-see fakes would be the small Toshiba tubes A1491/C5198, D817/D1047), and the surface has a rough feel just like brushed (this really is the place where the fakes are likely to be filled ). Some models of imported tubes have been subjected to a matte finish on the surface of the fins (like MATALOLA's MJL1302A/MJL3281A), whilst counterfeit and individual joint venture tubes don't have this procedure. From the measurement results: when using the pointer multimeter R × 10k to block the positive and negative resistance between the telephone and electronic poles of this tube, the pointer of the real one is not moving or the angle of the swing is very little, and the imitation The c and electronic pole forward resistance (NPN forwards is Rce, PNP forward is Rec)the swing angle is much larger, that is, the resistance value is smaller (this indicates that the tube has a large penetration current); along with the digital multimeter is used. After measuring the magnification of this tube β, the consistency of the genuine (notably the inlet tube) is quite good, along with the consequences of the imitation is normally poor. 5. Performance when using fake machine: Considering that the pressure resistance of the pipe is usually low, it is easy to cause the pipe to burn when it is turned on; or so the warmth is much more serious than the one. At this moment, the c and electronic pole resistance of the pipe is significantly smaller compared to when it is not installed. More, and the deviation of β is even larger, and there is no such phenomenon in genuine products. If you are searching for the amp company global, I introduce ShuBole.
0 Comments
read more
Leave a Reply. |