Friday, May 25, 2018

HiFi Class-D Discrete Power Amplifier

HiFi Class-D Discrete Power Amplifier
Hello, friends this time I will share the scheme of class-d power amplifier circuit using discrete components (transistors, resistors, capacitors) without using IC. The power amplifier can produce output power 200 Watt to 500W RMS, which only use final transistor Mosfet N-channel as much as 2 pieces. In this circuit, I use 2 pieces of final transistor IRF540. This IRF540 MOSFET transistor can control voltage up to 100V with maximum current 28A continuously. So I just use the transistor for the final amplifier (switching PWM). Power amplifier class-d super HiFi can be supplied up to 45V DC CT. and for circuit schematics also PCB Layout design I can see below:

HiFi Class-D Discrete Power Amplifier Circuit
PCB Layout in 2 Layers:
PCB Layout Design HiFi Class-D Discrete Power Amplifier


Tuesday, May 22, 2018

Subwoofer Filter 4558 complete Power Supply

Subwoofer Filter 4558 circuit

Hello friends, this time I will share the 4558 filter subwoofer circuit which is similar to the previous filter subwoofer. Why is a subwoofer filter needed for a power amplifier circuit? For the important problem whether or not it depends on the usefulness of the power amplifier itself, whether the power amplifier is devoted to subwoofer speakers or not. If so, then this subwoofer circuit is very important.

Usefulness is very good, but it also can clarify the low tone and eliminate the middle tone and high tone, so that bass issued by subwoofer speakers getting kicked. Back to the topic of this subwoofer circuit, this circuit I design and I modify it by adding a regulated power supply circuit by IC 7815 and 7915. Below the circuit schematic of subwoofer filter complete power supply:

Subwoofer Filter 4558
 PCB Layout Design Subwoofer Filter Circuit:
PCB Layout Subwoofer FIlter 4558
 PCB Layout Design Subwoofer Filter in two layers:
PCB Layout Design Subwoofer Filter 4558 in two layers

PCB Layout Subwoofer Filter (top).pdf
PCB Layout Subwoofer Filter (bottom).pdf
PCB Layout Subwoofer Filter.Gerber 

Saturday, May 19, 2018

Class-D Power Amplifier Circuit D1K5

On this occasion, I will share the power amplifier circuit, power amplifier circuit with the class-d system. The power amplifier is very good used for large power. This power amplifier can be supplied from 65V to 95V DC with a minimum current of 10A or better. And can generate power up to 1500Watt RMS, so big is not it?

The D-class amplifier is an electronic amplifier that uses transistor switching as the primary method for power, unlike class A, class B, or AB-class linear amplifier that uses the active resistance of the transistor. Therefore, this amplifier has a higher benefit, with additional results for the required heat sink. Filter the LC pass under smoothing the pulses.

The efficiency of a high D-class amplifier stems from the fact that the output stage never operates in a linear or active state. The output of the D-class amplifier consists only of ON or OFF. When the appliance is alive, the current that flows is maximum, but the voltage that runs it is ideally zero, and when the appliance dies, the voltage that stretches it is maximized, but the current that flows is zero.

Below the 2 Layers PCB Layout Power amplifier Class-D D1K5:
PCB Layout Power amplifier Class-D D1K5
Video Power Amplifier 

Gerber Files: Class D D1K5

Friday, May 04, 2018

Power SOCL504 2.1 Channel Amplifier

Power Amplifier SOCL 504 for stereo + subwoofer speakers
This is my project about Power Amplifier SOCL504, which I applied for the use of 2.1 (stereo + subwoofer) speaker system. Why am I using this SOCL504 driver for the use of 2.1 speaker channels? Yes, because the power amplifier driver is very suitable for use in various places, both in the homeroom and outdoors. And for the sound produced is also very satisfactory. Adopted from a variety of modifications SOCL504 power amplifier, this circuit highly recommends for you who like to make audio power amplifier.

And below for the SOCL504 power amplifier circuit that I combine to get a power amplifier with a 2.1 channel speaker system.

Power SOCL504 2.1 Channel Amplifier Circuit Schematic
Circuit Description
There are 3 sets of power amplifier SOCL 504, in the blue and green line is using for stereo (satellite speaker's) and the red line is using for subwoofer speaker. The 3 power amplifier SOCL504 I have prepared for its preamplifier you can see here: 2.1 Channel Preamplifier.
The difference between the stereo and the subwoofer amplifier is found in the capacitor of the A1837 and C4793 driver transistors. For stereo power amplifier I use 220pF and my subwoofer uses 100pF. What is the purpose?
The goal is to place high-frequency output. The higher pico size of the capacitor, the high tone gets bigger so the treble sound will get out but its make more noise also. And the right value is 220pF and the subwoofer amplifier uses 100pF.
In addition to capacitors, the final transistor is also different. Only in number, for stereo amplifiers use 1 set 2SC5200 2SA11943 and subwoofer amp using 2 final sets of transistors. It aims to distinguish the output power and power amplifier power to control the small or large power speakers. And obviously for subwoofer speakers will need more power so that I put 2 pieces of the final transistor for the subwoofer amplifier.
The power supply uses a bridge diode that I give the capacitor to filter and coupling AC to DC circuit. and my capacitors bank and filters use 24 x 680uF - 1000uF / 100V and 4 x 100N / 275V. The input AC voltage is very wide, starting from 20V AC - 75V AC CT.

Speaker impedance: 4-8ohm
Supply voltage: AC 20-75V CT MIN 10A 
Final Transistor: Toshiba 2SC5200 NPN, 2SA1943 PNP
Channel: 3 channel (left, right, subwoofer) using this 2.1 Preamplifier Circuit
Total Output power: 200W * 2 + 600W * 1 subwoofer (Upgradable)
Output matching: 4-8 ohm
Frequency response range: 14-100khz

2 Layers PCB Layout SOCL504 Power Amplifier
PCB Layout Power SOCL504 2.1 Channel Amplifier
PCB Size 300mm x 135mm
For its PCB I provide 2 files that are in PDF format and Gerber RS274-X. Please download later at the end of the post. For pdf format, you can make it in double layer PCB with black and white picture top and bottom, make your own PCB tutorial you can see on my youtube channel video list. And for Gerber files, you can upload and order to PCB Prototype sites I highly recommend that PCBWay.com. Why PCBWay is recommended?
Because PCBWay is the most professional PCB manufacturer for prototype and low volume production. With more than a decade in the field, PCBWay committed to meet the needs of customers from various industries in terms of quality, delivery, cost-effectiveness and other requests. As one of the PCB manufacturers and the most experienced SMT Assembler in China, PCBWay is strongly recommended to be your friend in terms of PCB production and component assembly. For ways to upload and order you can see in the video below along with designing the PCB. 

Complete Video Power Amplifier SOCL504 for 2.1 Channel Speakers.

PDF : Stereo + Subwoofer Power Amplifier SOCL504
Password: elcircuit.com

Wednesday, May 02, 2018

2.1 Stereo + Subwoofer Preamplifier Circuit

2.1 audio preamp  2.1 channel home amplifier  2.1 amplifier home  parasound p5 2.1 preamp  2.1 amplifier receiver  2.1 channel amplifier  preamp with room correction  amplifier 2.1 speaker system

Pre-amp 2.1 Stereo + Subwoofer this system is part of tone control for speaker 2.1 channel system. This 2.1 audio preamplifier circuit there are some settings, for subwoofer settings, there are VOLUME SUBWOOFER, FREQUENCY, and PHASE. As for stereo channel or satellite speakers, there are settings VOLUME, MIDDLE, TREBLE, AND MIDBASS. This circuit is very compatible with 2.1 Channel home audio amplifier and can be applied to car audio 2.1 channel amplifier.

Below the circuit schematic of 2.1 Preamp Tone Control:
2.1 amplifier circuit board
Component List
R1, R5= 5K6
R2, R6, R9, R33, R45, R46= 22K
R3, R4, R7, R8, R15, R21, R30, R31, R37, R42= 10K
R10, R25, R34= 68K
R11, R14, R16, R17, R20, R22, R47, R48= 1K
R12, R13, R18, R19= 100K
R23= 27K
R24= 470K
R26, R27= 3K9
R28, R29= 15K
R32= 100R
R35, R36, R40, R41= 8K2
R38, R39, R43, R44= 4K7
C1, C3, C6, C8=1u/25V
C2, C7, C13, C16= 22p
C4, C5, C9, C10= 56N/ 47N
C11, C14= 470N
C12, C15= 1N
C17, C18, C19, C20, C22, C24=100N
C21= 220N
C23= 47N
C25= 68N
C26, C29= 4N7
C27, C30= 10N
C28, C31= 2N2
C32, C33= 1000uF 50V
C34, C35= 22uF/50V
C36, C37, C40, C41, C42, C43= 220uF/ 25V
C38, C39, C44, C45= 100N
D1, D2, D3, D4=1N4007
D5, D6= Zener 12V - 15V
U1, U2, U3= NE5532
U4= TL084
Q1= TIP31 
Q2= TIP32
J1= Stereo Input
J2= Stereo + Subwoofer Ouptut 1.Sub Out 2. L Out 3.R Out 4. Gnd
J3= V Input AC 20V CT

PCB Layout Design

2.1 audio preamp  2.1 channel home amplifier  2.1 amplifier home  parasound p5 2.1 preamp  2.1 amplifier receiver  2.1 channel amplifier  preamp with room correction  amplifier 2.1 speaker system

Gerber Files= 2.1 Preamplifier PCB Gerber 

Monday, April 30, 2018

Sound activated 12V LED Lights

Sound activated 12V LED Lights
Hello, in this post I will share the daring led lights, led lights are lit up with the thump of the tone issued by the speakers. The lights are on with a high sound and no sound.

The workings of this circuit are simple, ie using some electronic circuit, microphone serves to capture sound, and the sound will be transmitted into sound. Well, these buttons will be used and converted into working voltage, which is processed by mic preamp circuit, and the signal converting circuit into the voltage using the LB1403 circuit. the voltage released by the LB1403 circuit is still very small with a small current also, which can only be done on a 1.5V led light. Then I add the NPN transistor amplifier so you can use 12V voltage for the lights that are in the car for audio accessories. Here's the circuit, PCB Layout:

Sound activated 12V LED Lights

R1=47K, R2=10K, R3=12K, R4=220K, R5=150R, R6=5k6, R7=560R, R8=20k, R9=10R
C1=22N, C2=4u7/25V, C3=1uF/25V, C4=120pF, C5=100uF/25V, C6=4u7F/25V
D1=1N4007, RL1=Relay 12V SPDT, Q1=TIP42, U1=LB1403

PCB Layout Design
Sound activated 12V LED Lights PCB LAyout
PCB Layout Design Sound activated 12V Lights

Tested Sound Activated LED Lights 12V 40W Video:


Sunday, April 29, 2018

SMPS Power Amplifier using 2 Mosfet Transistor

This is power supply circuit using the power amplifier, like before schematic circuit SMPS Gacun here: 10A 70V SMPS for Power Amplifier there are using 1 Mosfet N Channel. This power supply circuit is suitable for power amplifier circuit with big power, can be used for a power amplifier with 1000Watt or more power. The maximum voltage that can be set up is 75V with maximum ampere can reach 25Ampere. By using 2 mosfet Gacun SMPS can add their output power and also stronger for all types of amplifiers. Below for the circuit scheme:
SMPS Power Amplifier using 2 Mosfet Transistor
Component List:
R4= 22R
R5= 1K5
R6= 39K
R7= 3K9
R8= 1K
R9= 820R
R10= 220K
R11= 0,1R - 0,22R 5W
R12= 5K6
R13= 220K 2W
C1= 100N 275V
C2= 220uF 400V
C3, C4, C8= 10N
C5, C6= 1uF 50V
C7= 2N2
C9= 22N
C10= 10uF 50V
C11= 47uF 50V
C12= 1N 400V
C13, C14, C15, C16= 1000uF 100V
D1,D4= Zener 9V1
D2, D3, D5, D6= 1N4148
D7= Zener 12V 500mW
D8, D9= MUR8060
BR1= Diode Bridge KBU4M
TR1= EMI Filter from TV PSU Circuit
TR2= Gacun Trafo MK201609
TR3= Primary Winding: 45Turns 0,6mm , Secondary Winding: 14Turns CT 14Turns 0,8mm. Core transformer using former tv power supply.
IC1= UC3843
Q1= IRFP460, K3911
Q2= IRFP460, K3911

For PCB Layout you can see below, or you can download it in the form of a file (PDF) at the end of the post:
PCB Layout SMPS Gacun

Finished PCB SMPS Gacun 25A 2 Mosfet N-CHANNEL:

The transformer that you can use for this SMPS Circuit, see video below:


Saturday, April 21, 2018

DIY Mini 12Volt Power Amplifier

DIY Mini 12Volt Power Amplifier
On this occasion, I will share a mini power amplifier with a power output that is not big enough, and this power amplifier can be supplied with 12volt voltage up to 24V asymmetric. With a small power, this amplifier can be applied for home use or on a radio or portable speakers. For circuit schematics and PCB layout my own design as shown below.

12V Power Amplifier Circuit Schematic
Component list:
R1=560K, R2=22R, R3=6K8, R4=6K8, R5=2K2, R6=1K, R7=22K, R8=1R, R9=1R, R10=15R, R11=150R RV1=10K-100K Potentiometer
C1=10uF, C2= 10uF, C3=330pF, C4=220uF, C5=100uF, C6=330uF
Q1=C945/ C828, Q2=BD139, Q3=TIP32, Q4=TIP31
D1=1N4007/ 1N4148

PCB Layout Design:
12V Power Amplifier PCB Layout Design
You can download PCB file .PDF at end of this post.
 Finished Project:
Mini Power Amplifier Circuit Schematic
Full video making of this 12Volt Power Amplifier circuit by using PC power supply former, the input voltage about 14V DC asymmetric with current output 5A-20A. For the final transistor is using D1763 and B1186 you can also using TIP31/TIP32. The speaker using a 2x2,5inch speaker with maximum power 60W, see below the video:


Monday, April 16, 2018

DIY KIT Voice Spectrum Lights 8x8 LED Red/Green/Blue

DIY KIT Voice Spectrum Lights 8x8 LED Red/Green/Blue
Hello elcircuit friends, this time I will post make audio spectrum circuit using LED 8x8 Red / Blue / Green. This circuit you can directly assemble because on icstation.com site is available. Which makes it easy for DIY'ers to create a KIT Audio Spectrum complete with acrylic case. The schematic circuit also you can see below.
DIY KIT Voice Spectrum Lights 8x8 LED Red/Green/Blue

For more details, you can see the video below is complete with KIT, also by testing this circuit of voice spectrum lights

To assemble this kit the things that need to be considered so that these kits can function properly is:
  • Plug the resistors, capacitors in accordance with the existing label on the PCB.
  • Install 47ohm on the label RY1 - RY8, RX1 - RX8
  • Install correctly MIC, The negative electrode of the MIC is connected to the metal case The positive pole is not connected
  • Plug it correctly foot transistor S9014, do not upside down base legs, emitter and collector.
  • Pay attention to the direction of the integrated circuit
  • Plug the led properly the long pin is the positive When installing, please keep each transverse or each vertical one in the same color.

To buy this Audio Spectrum 8x8 Red/Green/Blue DIY Kit Level Indicator w/ Acrylic Shell Voice Spectrum Lights visit here: ICSTATION

Tuesday, April 10, 2018

150W + 150W TDA8950TH Class-D Chip Amplifier

Power amplifier class d is now quite crowded among the lovers of audio amplifiers because this power amplifier has a large enough power output and has a fairly slim design. Therefore, it does not provide such a large place for the size of a high power amplifier. And no less important, the amplifier has a heat that is not large compared to class AB or OCL power amplifier. And this time I will share the class-D power amplifier circuit using a chip (IC) as the main power amplifier of this D-class. Namely using TDA8950TH IC, this IC the design is very small with 16mmx14mm dimension. And for output power that can be issued this IC can reach up to 340W x 1 @ 8 Ohm; 150W x 2 @ 4 Ohm. The voltage input is wide range about 12V up to 45V DC. Below is the schematic circuit of TDA8950TH.
TDA8950 Class D Power Amplifier circuit schematic TDA8950TH
Chip amp class-d TDA8950TH you can buy at WINSOURCE ELECTRONICS:
TDA8950TH Power Amplifier Circuit
Click Link Below to Buy this TDA8950TH Class-D Chip Amp
TDA8950TH Chip Amplifier Class D

DIY PCB Class-D Power Amplifier with TDA8950TH Chip Amp:
PCB Layout TDA8950TH
 PCB Transfering
Layout PCB TDA8950TH
PCB Etching with Fericlhoride
TDA8950 PCB Layout Design
 2 PCB Layout for 2 Layers PCB Top and Bottom
Power Amplifier Class D TDA8950TH Circuit
Finished Power Amplifier Class-D Chip Amp TDA8950TH
Power Amplifier TDA8950TH
PCB layout with PDF File format you can download below:
PCB Layout TDA8950TH Top Bottom .PDF