Sebetulnya untuk pemula ic ini terbilang mahal, untuk sepasang ic. Hifi amplifier audiophile alpine audio audio box audio equipment gain multimedia theater bluetooth. I teach my students that its all about how you abuse. Satu ic lm1875 menghasilkan keluaran daya 20 watt mono dengan distorsi yang sangat kecil, tegangan catu daya yang dibtuhkan sekitar 15 v sampai 25 v dc asimetris. The gainclone has, not unsurprisingly, due to its simplicity and low cost, become a huge phenomenon in the world of diy hifi.
All pictures reformatted to the native largest size that i have. Building a basic inverted gainclone chip amp using hardwiring. In this article, i discuss the history of the gainclone and how i built my chipamp. Not all users have contributed to its continued and almost irreversible derision as a modern communication tool. It also works nicely as power amp for portable cdmp3 players, computer multimedia, etc. How to make audio power amplifier using lm1875 ic youtube. Cara btl power amplifier menjadi 2 kali lipat bertenaga. Lm1875 chipamp full project electronic circuit collection. Some of people on the net says that gainclone is one of the shortest amplifier in the world. As ive promised before, my gainclone project will be supplied with special smoothing capacitors. The gobo stereo audio amplifier kit is based around the lm1875 ic. Building an lm3886 gainclone chip amp with a regulated power. Powerpoint presentations dont have to revert to ugly, overanimated stereotype. Lm3886 1features description the lm3886 is a highperformance audio power 23 68w cont.
Classa transconductance power amplifier the natural way of. A guide to selecting components, building a suitable case and nonregulated power supply unit. For detailed information about the circuit and the lm1875 chip specifications and performance see the texas instruments lm1875 audio power amplifier datasheet pdf 3. I built it so my daughter could practice her roland stage piano at bedroom volume levels. Setelah bereksperimen dgn lm 1875 untuk power amplifier, skr saya coba dengan lm 3886. Like all the other, simple lm3886 or lm3875 gainclones ive. I have been comparing the schematic i have for the chinese kits with the chipamp kit, the lm1875. Since my diy speaker is 4ohm and somewhat difficult to drive, i want to have a more powerful amplifier to match with it. This version also uses a very high capacitance psu and a snubber. Lm3875 overture audio power amp series hperformance. Jul 15, 2012 10 most amazing epoxy resin and wood river table designs. Lm1875 1features description the lm1875 is a monolithic power amplifier offering 2 up to 30 watts output power very low distortion and high quality performance for avo typically 90 db consumer audio applications.
The sound of this amplifier is similar to my lm3875 amplifier, which is very clean and detail. But i dont have any intention to match or compete with them. It is a design based on highpower integrated circuits, particularly the national semiconductor overture series. Lm1876 overture audio power amplifier series dual 20w audio. Nov 06, 2014 i recently built a dualmono lm3886 chipamp gainclone amplifier from a kit sold by the nowdefunct. Dec 01, 2014 supply kedua chip jadi satu, begitu pula dengan supply opamp untuk rangkaian lpf nya.
Pa100 diy 2x lm3886 in parallel gainclone audio amplifier. Microamp a miniature stereo amplifier using an lm4780 and delivering around 2530 watts per channel. The original solid state gaincard amplifiers were designed by a man named junji kimura you could say that koji teramura had a hand in the design as well, having some very nicely tuned ears to lend to the project. As mentioned, the ic enables a very low componentcount, which in turn leads to a very compact layout. So i built this gainclone lm3886 chip amp and i learn a lot from doing it. The voltage of the power supply will have an effect on the power of the ic. The power supply schematic for the gobo lm1875 amplifier, also from the stepbystep. Lm1875 yang saya buat ini sebenarnya hanya rebuild dari lm1875 yang pernah saya posting disini, bedanya saya mengganti icnya dengan yang versi white marking, c feedback elna silmic ii 47uf, r dale, stereo pcb dan heatsink bekas processor intel lawas. Lm1876 1features description the lm1876 is a stereo audio amplifier capable of 23 spike protection delivering typically 20w per channel of continuous. For my gainclone build i purchased the circuit boards for a noninverted lm3886 amplifier and power supply from. Pada gambar rangkaian power amplifier gainclone lm1875 yang sudah jadi dibawah ini merupakan amplifier gainclone stereo menggunakan 2 buah ic lm1875. Gainclone or chipamp is a type of audio amplifier made by doityourselfers, or individuals interested in diy audio. Rjm also has a very nice graphic explaining this on his gainclone article lm3875 but. Stereo gainclone power amplifier lm1875 diy amplifier, electronic.
Untuk ic lm 1875 bisa di app khan ke 8, tapi dia cocoknya untuk speaker satelit. Lm3886 chip amp gainclone amplifier construction project. Stereo gainclone power amplifier using ic lm1875 output power up to 20w channel. Amplifier 20w gainclone lm1875 sebenarnya saya udah pingin punya chip amp legendaris ini, tapi baru keturutan minggu lalu, karena di kota tempat saya tinggal nggak ada yang jual. Karena kebutuhan voltase dan arus juga beda, saya split supply buat lm1875 cukup dengan resistor sebagai current limiter dan zener sebagai voltage limiter. Power amplifier circuit for the highend class ab using the lm1876 ic is in great demand among audio amplifier lovers. Originally published in the december 2004 issue of silicon chip magazine, the schoolies amp was a project using the lm1875t amplifier ic written by. With just a few external components, a clean power supply and some hefty heatsinking you can get truly hifi quality sound that rivals complex, discrete transistor designs. Kit lm1875 modular terdiri 3 kit utama yang masingmasing terpisah.
Lm1875 gainclone rounded pcb design high quality amplifier duration. Gainclone or chipamp is a type of audio amplifier made by doityourselfers, or individuals. Next time, ill dive right into the crown prince of the ab chip amps the lm3886 itself. The amplifier kit is based around the lm1875 audio amplifier ic. Gainx lm1875 220watt gainclone amplifier diy amplifier. Pcb dan kit integrated gainclone lm3886 lm3875 lm3876 dan. Lm1875 can be run to 60 volts total supply rail, but its output current is limited to 4 amps. In our creations, we stress accurate reproduction of low level information and immediacy, as those are major factors that allow components to sound natural, musical and complete, in contrast to sounding mechanical, artificial and dead. The circuit generally follows the standard application note for the lm1875.
Bahkan dengan pointtopoint pun bisa dengan mudah dilakukan. With a power of up to 20 watts stereo amplifier that is suitable for use as power audio amplifier in various applications such as power amplifier for pc audio, fm radio, mp3 speaker, finally youre sure to find great uses for this amplifier with lm1875. The enclosure is designed to compliment my audax minimonitors. From the rear view of the lm3886 gainclone amplifier shown in photograph 7, you can see the plain nickle plated rca jacks and speaker binding posts were used. Diy casavant transmission line powered subwoofer with scanspeak 26w and oaudio amp 500 bash duration. Gainclone adalah audio a mplifier yang murah namun mempunyai kualitas hiend dengan daya 20 watt cocok untuk audio dalam ruangan dan kamar, jika kita sering mendengarkan music dari komputer ataupun pecita siaran radio rangkain amplifier gainclone lm1875 bisa menjadi alternatif pilihan dan harus di coba untuk kita bandingkan dengan sekian banyak mini amplifier yang beredar di. Rangkaian power amplifier gainclone lm1875 dengan daya 20.
A complete guide to design and build a hifi lm3886 amplifier. Merancang dan merakit nano gainclone lm1875 amplifier ala. The lm1875 is a monolithic power amplifier offering. Masingmasing sudah dilengkapi dengan terminal kabel sehingga sangat mudah untuk dirakit pada box amplifier. This is for how to make one version of a gainclone amplifier. Gainclone power amplifier lm3886tf i stumbled across the chipamp site one day and was immediately interested, and after doing a bit of digging around into gainclone, and the genesis for them, the 47 labs gaincard amplifier, i was keen to try my hand. The lm3886 is one of texas instruments singlechip monolithic amplifier integrated circuits. Namun karena daya yang dikeluarkan relatif kecil, maka banyak yang minta kepada saya untuk membuat kit pcb gainclone dengan daya yang lebih besar menggunakan ic lm3886 lm3875 lm3876 dan lm2876.
The data sheets for the lm3875 and its smaller cousin the lm1875 are very informative. Dual overture lm3886 gainclone solidstate power amplifier ics. I recently built a dualmono lm3886 chipamp gainclone amplifier from a kit sold by the nowdefunct. The official datasheet pdf claims the ability to drive 20w into 8. The lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications.
The performance of the lm3875, utilizing its self peak instantaneous temperature. Hi all, i have an lm3875 gainclone with very standard components and a pair of 160va 25v toroids. The download file includes both the amplifier board and the matching psuboard. Wijkamp schematics parts list l r l r power r11 r21 1k. They can use with dc power supply wide range between 16 volts to 60 volts and can use both dual and single voltage. Tubes meets gainclone technology custom analogue audio. Lm1875 is preferable for headphone duties due to their lower power output and dcoffset level. My first finished audio construction project was this 25w per channel stereo amplifier.
A power opamp or audio opamp chip such as the national semiconductor lm1875, lm3875. Highperformance 56w audio power amplifier general description the lm3875 is a highperformance audio power amplifier capable of delivering 56w of continuous average power to an 8. Nov 22, 2018 lm1875 yang saya buat ini sebenarnya hanya rebuild dari lm1875 yang pernah saya posting disini, bedanya saya mengganti icnya dengan yang versi white marking, c feedback elna silmic ii 47uf, r dale, stereo pcb dan heatsink bekas processor intel lawas. This amplifier is based on the pa100 parallel amplifier detailed in national semiconductors application note an1192. The project files for my mini gain clone with the lm1875 ic as described here.
A complete guide to design and build a hifi lm3886. Highend lm1876 quad amplifier gainclone using high. Boleh dibilang gainclone sangat populer di kalangan diyer, hanya membutuhkan beberapa biji resistor, kapasitor, dan icnya sendiri tentunya. First, i will explain about the lm 386 chip itself. In addition to the use of a power ic, there are a number of details that differentiate the gaincard from normal amplifiers. Yuanjing dual lm3886 gainclone amplifier board with 6n11. Ive changed the internal circuits of this chipamp or so called gainclone to use premade circuit boards, these were bought from. Jual 2x 20w gainclone lm1875 stereo amplifier kit2 fr4 pcb. Classa transconductance power amplifier making use of adjustable voltage regulators.
Lm1876 overture audio power amplifier series dual 20w audio power amplifier with mute and standby modes check for samples. Aug 03, 2018 posts about gainclone written by theslowdiyer. Pada akhirnya, setiap amplifier yang dibuat dengan lm3875, lm 3876, lm3886, bahkan lm1875 disebut dengan gainclone. The lm1875 is a wide power amplifier with very low distortion and highquality efficiency for audio applications. Ic yang umum dipakai biasanya lm3886, 3875, dan 1875. I decided against the partial kit that includes the lm3886 ic, rectifiers, capacitors and resistors because i already all had pretty much all the required components on hand. As you already very well know, gainclone is a commonly used name for clones of so called gaincard amplifier, i. D basis rangkaian dari ketenaran gainclone dari sang penemu shiragaki model. Bisa anda baca di forum blog lain mengenai ic gainclone lm1875,lm3875,lm3886 mantap dah pokoknya kualitas ampli tabung yg harganya berjeti2.
Gainclone amplifier gc lm3886 stereo idr sold out amplifier lm1875 2. And this circuit is complete power supply and preamplifier circuit but not include 5. Although quite compact in size 8 h x 10 w x 16 d in size it manages to produce 2 x 25. Rangkaian power amplifier gainclone lm1875 wahyu eko. Banyak yang kecanduan mengoprek gainclone lm1875 ini. I love me some chip amps tiny packages of pure audio power. Diy amplifiers that are made of one single amplifier ic. Lm3886 overture audio power amplifier series highperformance68w audio power amplifier wmute check for samples. This is a monoblock gainclone amp based on a lm3886 ic which is more suited to 4 ohm loads. With power supply for ease of assembly for any hobbyist. Some people could make it less than 32 mm on the signal path. Each rail positive and negative will have 30 pcs of black gate capacitor, with total around 20. It is in a 5pin package and usage is very simple two.
Remember, we want the two amplifiers to drive the speaker, not fight each other. In this project use, the single voltage supply is positive and ground. Amplifier rakitan kecil ini kualitasnya bagus sekali. It gives power is 20 watts into a 4 ohms or 8 ohms load on 25v power supplies. The case is made entirely out of recycled aluminum bought from scrap metal yards. Compared to the lm3875 gainclone, this amp can deliver twice the power to my 4ohm speaker, and it improves the dynamics and bass punch a lot. Amplifier gaincard ini menggunakan integrated circuit lm3875 produksi national. The lm1875 is a monolithic power amplifier offering very low distortion and high quality. It would prolly be a good idea to give a little paraphrased and abbreviated background on gainclone amps to get us started. Circuit power amplifier stereo audio with lm1875 2 x 20. However, as always, methods of improving the design have come along to provide an almost bewildering number of options for the new builder. Akan tetapi untuk kali ini saya menjatuhkan pilihan kepada lm1875. Lm3886 gainclone amplifier chip amp circuit diagram another frequent change was the elimination of zobel network with the output of the lm3886 amplifier, because it sounded bad. This recommended power amplifier for the audiophile that have low.
See here to view schematic and download the pcb gerber file. Stereo noninverting gainclone, lm3886 based c 2010 version. Having heard a pair of frugel horn mk3s with the new mark audio chp70s driven by a pair of 300bs, which i cant afford to make i am going to make a pair of speakers myself. If you have some diy skills and are willing to give the gainclone kits a try, you can get them at sites such as, or even ebay search for gainclone or lm1875. Yuanjing dual lm3886 gainclone amplifier board with 6n11 tube preamplifier 68 watts x 2 hybrid amplifiers offer the warmth of yesteryear combined with the accuracy and efficiency associated with a modern solidstate amplifier. Kali ini saya mendesain gainclone yang cantik suara nya dan juga cantik penampakan nya yaitu model chelsea fc edition yang tersedia dalam 3 pilihan, yaitu versi lm1875, lm3886 dan lm3875. Now there is a new one, this time based on the smaller lm1875 ic the smaller ic obviously means less voltage and less power compared to the lm3875 and lm3886 but unless you have a big room andor very inefficient speakers or you are having a party, the 20w or. Gobo stereo audio amplifier kit lm1875, 15w, classab. Suara yang dihasilkan musikan dengan imaging yang baik apabila dipadankan dengan spiker yang baik. I have already done a couple of gainclone type chipamp designs with the lm3875 amplifier ic, mainly here and here.
Merakit gainclone tujuan utama nya tentunya untuk mendapatkan amplifier flat sesuai dengan suara asli nya. After a couple of people have burned some expensive speakers, they come to realize that the network is for the dead and the speakers sound much worse than. I built this audio amplifier using a dualmono lm1875 chip configuration. On the front of the gainclone amplifier build is a small power switch with a builtin led that is run off of the power supply board.
This is a new kind of transconductance currentoutput amplifier principle that employs standard adjustable voltage regulators lm317 as the output devices. Gainclone adalah cloning dari amplifier gaincard, suatu amplifier komersial produksi 47labs yang harganya mencapai ribuan dollar. Lm3886 monoblock gainclone amplifier electronics diy. The gainclone is probably the most commonly built and wellknown amplifier project amongst hobbyists. Kit amplifier stereo 2x 20w berbasiskan ic gainclone lm1875, versi standard. This power amplifier gainclone with lm3886tf chip its a very good sound for your diy audio amplifier, and you can download pcb layout as gerber file mini layout design with throughhole. In this article, i discuss the history of the gainclone. And be sure to read nationals pdf on parallel amplifiers. Snas524a may 2004 revised may 2004 lm1875 20w audio power amplifier check for samples. Building a simple inverted gainclone chip amplifier using the lm3875 chip and hard wiring technique.
Gainclone experiments the research carried out during the planning of this project. Rangkaian power amplifier gainclone lm1875 dengan daya 20 w hallo sahabat gambar rangkaian elektronika, pada artikel yang anda baca kali ini dengan judul rangkaian power amplifier gainclone lm1875 dengan daya 20 w, kami telah mempersiapkan artikel ini dengan baik untuk anda baca dan ambil informasi didalamnya. Pin 5 is the pin 6 is the power supply to the amplifier. Building an lm3886 gainclone chip amp with a regulated. Beberapa waktu yang lalu saya sempat jalanjalan ke pasar genteng, surabaya, nyari ic ini yang ori juga cukup susah, banyak yang palsu mirip tda. Rangkaian modul ocl power amplifier tip2955tip3055 atau mj29552n3055 kali ini saya mengajak anda untuk merakit modul power amplifier jenis. May 19, 2008 in this circuit, tighttolerance say, 0. Lebih lengkapnya lihat partlist yang saya sertakan di bawah.
1474 1126 529 205 499 118 791 1103 179 839 319 1131 391 827 1173 307 885 982 1101 222 365 1409 570 238 890 1312 1320 181 1081 1485 1181 550 121 514 131 349 1457 1514 1474 142 1300 1093 1011 1483 184 241