Power Amplifier Class-D D1K PRO

Hello friends in this post, I will assemble the D1K Pro class-d power amplifier and do a sound test and output power, here is a double layer PCB layout designed by my friend Muhammad Syafii, this layout is equipped with DC protection feature, Input Balance which is buffered by the Dual Opamp IC, then there is also Over Current Protection or OCP, and also has an indicator for the front panel.

Gerber file download at end of the post.

Immediately, I will convert this layout to the Gerber file to print the PCB on the JLCPCB site for how to print PCB in JLCPCB, see the following video.

PCB that I ordered at JLCPCB, a very high quality using FR4 fiber material, double side PCB, thickness 1.6mm, dimensions 10x10cm. we just fill the components according to marking or labels on the PCB.

My LPF inductor uses a 3.3cm 77071A7 series core with a number of 2 dual cores, a total of 15 turns, with a 0.6 4 duplicate copper wire. With an inductance value of 32uH.

For the MOSFET, I use 2 IRFP260 N channel MOSFETs.

For the heat sink, I use an aluminum plate, 10x10cm with 2x1.6mm thickness. It is enough for this power amplifier with a note to add a fan.

And the amplifier is ready to be tested, I give the supply voltage at 90VDC and then bias the 12VDC, the speaker output I give a load at 4 Ohms 1000W. 10K volume potentiometer, and input from a laptop that has a balance.

* Partlist from file: d1k pro.lay6" / 02/01/2020 15:13:57
*
* Name Value
*
C1 10U
C2 10U
C3 10U
C4 10U
C5 10U
C6 33U
C7 33U
C8 101
C9 101
C10 101
C11 101
C12 101
C13 101
C14 222
C15 471
C16 104
C17 104
C18 221
C19 221
C20 100U
C21 10U
C22 100U/35V
C23 104
C24 105/400V
C25 684/400V
C26 224/250V
C27 100U
C28 100U
C29 100U/16V
C30 10U/50V
IC 1 MC 33078
IC 2 5218
IC 3 HEF 4049
IC 4 IR2110
Q1 2N5551
Q2 2N5551
Q3 2N5551
Q4 5401
Q5 2N5551
Q6 2N5401
Q7 2N5551
Q8 BD139
Q9 BD140
Q10 BD139
Q11 BD140
R1 100K
R2 100K
R3 100K
R4 13K
R5 10K
R6 10K
R7 10K
R8 47K
R9 10K
R10 13K
R11 10K
R12 2K2
R13 10
R14 10
R15 4K7
R16 6K8
R17 10K
R18 13K
R19 1K2
R20 560
R21 560
R22 4,7
R23 4,7
R24 56K
R25 100K
R26 4K7
R27 4K7
R28 4K7
R29 4K7
R30 4K7
R31 1K2
R32 4K7/3WAT
R33 4K7/3WAT
R34 10/1WAT
R35 10/1WAT
R36 4K7
R37 4K7
R38 4K7
R39 15K
R40 15K
R41 6K8
R42 10K
R43 47K
R44 22
R45 22K
R46 47K
R47 100K
R48 33K
R49 680
R50 1K/1WAT
R51 10/5WAT NOBLE
R52 0,1/5WAT NOBLE
RL1 RELAY 12V/16A
VR1 TRIMPOT 202

Download: Class-D D1K Pro Gerber file

DIY Class T Power Amplifier Tripath TA2022

Hello friends, in this post I will share a little about Class-T power amplifiers, this Class-T power amplifier is as reinforcing as Class D power amplifiers that use switching modulation, combined with proprietary techniques by the Tripath manufacturer, where there is the difference in control time and switching frequency depends on the input signal and the amplified signal.

And I will share the Schematic and PCB layout for Stereo Class-T power amplifiers that use the TA2022 chip with the following scheme, you can also download the pdf version at the end of the post.

Stereo Class T Tripath TA2022

In the above scheme, I have completed the start delay to prevent pop when it is first turned on, the timing delay can be adjusted by replacing R33 and C33, the greater the value of both, the longer the time on the amplifier, and vice versa.

I have also added the above circuit to 10V (VN10) also 5V, so you don't need to bother adding an external voltage. If you want to add an external voltage of 10V and 5V you don't need to fill in that part.

For 10V VN10 voltage I use the LM317 regulator which can reduce the power main supply voltage to 10V, -10V is reflected Main -Supply voltage.

I use a 5V voltage R Shunt and Zener regulator circuit, where the main voltage + is inhibited by Resistor R29 and stabilized by Zener 5V1 because R Shunt works to inhibit continuous current, then this R will be a little hotter.

The Shunt R R29 must adjust the main supply voltage, for the 30-35V DC symmetric voltage the value of R29 = 470-680R 3W, and for the 12V-18VDC stand, R29 = 68-150R 3W, voltage 18-30VDC, R29 = 220R-470R 3W.

The main power supply you can use 12VDC -35VDC.

D1, D2, and D3 you can use Schottky diode 1-2A 100V

Your LPF inductor can use T106 core micrometals using a 0.5 double diameter copper cable, which is wrapped around 18-22 turns.

I also share the PCB layout design with the format. RAR (Gerber File) that you can download at the end of the post.

PCB Layout design double layer power amplifier Class-T TA2022.

Video Test 

Download Schematic, Part list, and PCB Layout Gerber file.RAR :

Power Amplifier CLass-T TA2022 DIY .rar
*Extract file before using it.

Power Class-D UcD Xlite Fullbridge Proffesional Audio Amp

Hello guys, on this occasion we share the power amplifier scheme, also called super power amplifier with the D-class fullbridge Ucology topology, where this power amplifier is great for subwoofers with 18 "to 2000W RMS speaker sizes. This power amplifier scheme was designed by Mr. Kartino Surodipo, and indeed dedicated to professional audio use, follows the Fullbridge UcD power amplifier scheme:

To assemble the power amplifier we also shared the PCB Layout.PDF, to make it easier to assemble this fullbridge UcD amplifier kit.

Layout with a single layer design is equipped with a fuse, Speaker Delay, DC Protection,

For the Layout, we provide 2 versions of the SMD version in the form of a Gerber file with a part list (BoM file) to make it easier for you to search for components and references.

Video making and test

Download
Schematic + PCB Layout Through Hole Single sided PCB
Schematic, PCB, Partlist UcD Fullbridge SMD

note: extra the .RAR file at first.

Stereo Power Amplifier STK4132-2 STK4152-2 etc

Hello this time I will share the PCB layout Stereo Power Amplifier STK41xx-2, and I have tried on the STK4152-2 amplifier chip and the results are quite amazing, the sound produced is very soft and detailed bass sound is good, the vocals and the treble is very clear. Besides using ChipSTK4152-2 you can also use a chip STK4132-2, STK4142-2, STK4162-2, STK4172-2, STK4182-2, STK4192-2. On the PCB that I will share, I also complete it with speaker delay, which serves to eliminate the sound that is quite surprising when the amplifier is first turned on.

You can immediately see the PCB layout as shown below:

You can download a PCB Gerber at the end of this post along with BoM (Bill of Material) to make it easier for you to make this STK power amplifier circuit.

Video build and test

Download:
Gerber File Stereo Power Amplifier STK
BoM File (Part List) Stereo Power Amplifier STK

Full-bridge IRS20957 Class-D Amplifier

Here I will share schemes PCB layout and parts list for the power amplifier class-d full-bridge IRS20957s, power amplifier scheme is designed by Mr.Kartino surodipo. By utilizing the Logic inverter CD4049 with two IRS20957 amplifier circuits it can be transformed into a full bridge amplifier circuit.

Following is the full-bridge power amplifier circuit scheme. You can download PDF versions that already have protection and indicators and limiter input.

And for the PCB layout, I designed using EasyEDA using SMD components which are still easy to obtain. You can download the part list, Gerber file at the end of the post.

I have tested this amplifier at 70VDC, can output about 1100W RMS at a load of 4 ohms. Enough power can be released by this amplifier with a small amplifier dimension.

Eurolive Fullbridge build and test

Download:

Gerber File, Schematic Class-D Fullbridge IRS20957

Part List Class-D Fullbridge IRS20957

Please extract the file before using, Password: www.elcircuit.com

Power Amplifier Class-D UcD SuperLite v2 Final

Discrete UcD Class-D Superlite Power Amplifier Schematic Original:

Video Test and Tutorial

Download Gerber Files, Schematic, Partlist / BillofMaterial:
Power Amplifier Class-D UcD SuperLite v2 Final

Note: Extract file before using. Password:www.elcircuit.com

500W Class-D Amp IRS20957 SMD

Hello, at this time I will share about power amplifier class-d using IRS20957 class-d amp driver, this amplifier using half-bridge topology, mono power amplifier. Output power amplifier up-to 500W RMS at load 4 Ohm with supply voltage 90VDC. continous output power up-to 300W RMS.

In the previous post Power Amplifier Class-D IRS20957 Behringer B215D I have also made this amplifier, but the difference in the component that I use. in this post, I use the SMD component, so it looks even tinier, and this is highly recommended for power amplifier lovers with a simple and minimalist design that doesn't take up much space. 

And for the PCB driver, I made it apart to make it more minimalist, and it looks cooler. besides that, the PCB with 2 layer design is also quite cheap if we order at JLCPCB because the dimensions are below 10x10cm.

The following circuit schematic for IRS20957 drivers:

 Complete amplifier schematic:

PCB Layout design in two separate design;

Video Assembly and test

Download Gerber, Schematic, BoM (Part List) in one compressed file, extract first before using:

500W Class-D IRS20957 complete

Subwoofer Controller Frequency Phase & Booster

We will share the circuit to control and filter the low tone (Subwoofer), By using this subwoofer controller circuit you can add a more powerful bass sound to your subwoofer amplifier, in addition, this circuit is also equipped with frequency adjustments and phase reversals from 0-180 degrees. The following is the scheme of the subwoofer controller circuit:

In the above circuit scheme, using 2 IC op-amps, namely MC33178 (dual op-amps) and also MC33179 (quad op-amps). Besides using the IC, you can also use IC 4558 / NE5532 for the dual op-amp IC. As for the quad op-amp, you can use TL074 / LM324. The Subwoofer Gain / Boost settings are on the R23 potentiometer, Phase on R21, and frequency on R19. R23 and R21 use a mono potentiometer R19 use a stereo potentiometer.

In addition, the circuit is also equipped with a subsonic filter, which serves to cut the signal or low tone 0 - 40Hz. and frequency settings ranging from 50Hz to 250Hz. 

The subwoofer controller circuit works in the 12V-15V AC voltage range because the circuit is also equipped with a rectifier and power supply regulator using IC 7815 and 7915 you can directly connect to the transformer out (AC voltage). minimum rated current transformer 350mA.

For friends who want after attempting layout design of the subwoofer controller circuit schematic, we provide PCB layout SMD version with Double Layer you can download it at the end of the posting.

To facilitate the purchase of components we have also provided a BoM (Bill of Materials) file at the end of the post. By using BoM file you can upload it to the site and automatically LCSC.com you can simply select the spare and can be directly inserted into a shopping cart for purchase.

Download (extract first before using)

Schematic, Gerber File, BoM File Subwoofer Controller .rar
password rar: elcircuit.com

PCB Layout Super Gainclone Amplifier LM3886

Hello DiY'ers, at this time I will share PCB Layout design in Gerber file for Power Amplifier circuit LM3886, this is Super Gainclone Amplifier LM3886 and PCB is very simple and mini design, like a pin to pin soldering. So it's very good PCB design for you LM3886 Gainclone amp.

PCB Layout tested:

Download
Gerber File PCB Layout Super Gainclone Amplifier LM3886

Operational Amplifier, Types of Op Amp ICs and Characters

Various types and advantages of each offered by each component manufacturer to captivate the hearts of audio lovers. This is often done by audio hobbyists. Fiddling with and experimenting mutually components to get the best sound possible.

In the market, there are many choices of components, from the cheap to very expensive. The endpoint is a personal taste that determines the choice. Unfortunately, more and more standard components have decreased in quality. Instead of improving but getting worse. Finding quality components is difficult and expensive.

Prioritize replacing active components that directly process audio signals such as ICs and transistors. Because the upgrade effect is likely to sound more real. After that, it is just a passive component that does not directly process signals such as power supply, tin, resistor, condensator, transformer, and others. The effect on sound repairs is very small or even the difference is not heard directly.

Do not let you get stuck to replace passive components with prices that are so expensive while the main IC that processes electronic signals is ignored. Don't also get caught up in suggestions. The easiest upgrade is to replace the IC op-amp in the preamp. Because just pull the IC from the socket and install a new IC. Sometimes it needs to be accompanied by changing a few components such as a resistor to adjust a new IC with an existing system.

Not all op-amps have super specifications such as very high slew rates, very wide bandwidth, very low noise, very low THD, and others sound good. For the record, only 2-3V / µs slew rate is needed for the op-amp so that it can cover all sound frequencies.

It's just that because the sound power is mainly music that is different, it takes at least 3 times the standard.

After all, replacing the standard op-amps like 741, 4558 and LM324 with the better ones, even the "super" ones, actually made a messy sound. Because this type of op-amp requires a special power supply and can be very unstable. For example, a good standard op-amp like NE5532 requires a decoupled supply (usually ceramic or mica) of no more than 2 inches (a super op-amp is a closer). Unlike 4558 which can run quite smoothly without decoupled. So if you want to replace the IC, you should first look at the PCB design, don't just replace it. Here are some IC op-amps quoted from several sources.

LM833 (dual) = Flat with a pretty good musical dynamics.

4558D (dual) = good but boomy bass, vocals hoarse, treble blunt.

NE5532 (dual) = Flat with good vocals on the ears and clear treble. Details are very good, but for some people, the bass feels less.

TL072 (dual) = Quite noisy, but with good dynamics.

LF353 (dual) = A lot of sound at the middle frequency, but quite natural and detailed. Treble and bass feel soft.

CA3140 (single) = Special amps with MOSFET input. Vocal and treble sounds are pretty good in the ears. Unfortunately, the dual version (CA3240) is only produced for the industrial and military circles.

LM324 (quad) = Noise is quite audible. Poor detail and blunt treble.

OPA2134 (dual) = the favorite op-amp for audiophiles with excellent staging and depth of music, but with less detail and musical dynamics.

AD823 (dual) = Very detailed and very natural, great dynamics, with very clear bass and treble.

And some other types of op-amp ic that you can try with the advantages and disadvantages.

CA3080 = Dual Transconductance (LM3080). (8 pins)

CA3130T = Single op-amp MOSFET uncompensated. (8 pin)

CA3130E = Single op-amp MOSFET/bipolar/compensated. (8 pin)

CA3140E = MOSFET LM741 pin compatible. (8 pin)

CA3160E = Single op-amp. (8 pin)

CA3240E-1 = Dual op-amp. (14 pin)

CA5130E = Single op-amp. (8 pin)

CA5160E = Single op-amp. (8 pin)

ICL7611D = Single low-power op-amp. (8 pin)

ICL7641E = Quad low-power op-amp. (14 pin)

ICL7642E = Quad low-power op-amp. (14 pin)

ICL7650S = Chopper stabilised op-amp. (14 pin)

ICL7652C = Chopper stabilised op-amp. (14 pin)

LF347N = Quad high-performance op-amp. (14 pin)

LF351N = Single high-performance op-amp. (8 pin)

LF353N = Dual high-performance op-amp. (8 pin)

LF355N = Single high-performance op-amp. (8 pin)

LM10CLN = Dual Low-voltage compensated with reference. (8 pin)

LM301N = Single general-purpose op-amp. (8 pin)

LM301AN = General purpose uncompensated. (8 pin)

LM308N = Single low-drift op-amp. (8 pin)

LM324N = Quad low-power compensated. (8 pin)

LM358N = Dual low-power compensated. (8 pin)

LM614 = Quad Operational Amplifier and Adjustable Reference. (16 pin)

LM741 = Single General purpose uncompensated. ( 8 pin)

LM833N = Dual low-noise Hi-Fi Audio compensated. (8 pin)

LM1360N = Dual transconductance. (16 pin)

LM1458N = Dual general-purpose compensated. (8 pin)

LM3900N = Norton Quad Current Differencing. (14 pin)

LM627CN = Precision low-noise. (8 pin)

NE531N = Single high-performance. (8 pin) 

NE5532 = Dual low-noise. (8 pin)

NE5534P = Single Low-noise high-output. (8 pin)

NE5539 = Single wide-band. (14 pin)

OP27 = Low-noise precision (8 pin)

RC4558P = Dual high-performance. (8 pin)

TL061CP = Single low-power. (8 pin)

TL062CP = Dual low-power. (8 pin)

TL064CN = Quad low-power. (14 pin)

TL071CP = Single low-noise. (8 pin)

TL072CP = Dual low-noise. (8 pin)

TL074CN = Quad low-noise. (14 pin)

TL081CP = Single high-performance. (8 pin)

TL082CP = Dual high-performance. (8 pin)

TL084CN = Quad high-performance. (14 pin)

TLC251 = Low-voltage Power CMOS. (8 pin)

UA4136 = GP low-noise. (14 pin)

741 = Single General purpose uncompensated. (8 pin)

741S = Single High-speed. (8 pin)

747 = Dual general-purpose. (8 pin)

748 = Single general-purpose. (8 pin)

LM759 = Power op-amp. (4 pin) 

Of all the ic above there are some that have the same pinout. There are also a few different ones. So please check the datasheet before you install it. So that the IC op-amp can work according to its function. Maybe some of them are rare and difficult to get. You can search for other types of IC that have the same character.