Thứ Ba, 18 tháng 12, 2018

ALEPH-M CLASS A ANFİ DEVRESİ N KANAL MOSFET

Aleph-M çıkış gücü yaplaşık olarak 35w Class A sınıfı anfi için oldukca iyi bir değer çıkış modfetleri n kanal 2 adet irfp240 kullanılmış besleme voltajı simetirk +-18v dc Aleph-M pcb, şema, yerleşim planı çizimleri var ek olarak besleme devresinin şeması bulunuyor. Anfi class A olduğu için besleme devreside oldukca kaliteli zaten anfi malzemelerinden çok besleme fiyatı yüksek olur devrede bolca 2.2mh bobin filtre olarak kullanılmış.
aleph-m-class-a-pcb-irfp240-n-mosfet-3d
aleph-m-class-a-power-supply-18v-pcb
ALEPH-M_top
Dosya indirme LINK listesi (TXT formatında) link-15479.zip şifre-pass: 320volt.com
Meşhur Legend serisinin “Quasor” N-kanal irfp240 mosfetli modeli 4 ohm hoparlör ile RMS 1000w çıkış gücü verebiliyor besleme voltajı oldukca yüksek +-95 volt dc besleme hattına ve çıkışda sigorta kullanmanızı öneririm ayrıca hoparlör geçiktirme devreside şart Legend Quasor 1000w anfi devresine ait şema, pcb dosyaları var.
amfi-devresi-mosfet-power-amplifier-circuit-legent-1000w-95volt
irfp240-mosfet-power-amplifier-circuit-legent-1000w-95v
DİKKAT Devre yüksek voltaj +-95v toplam 190v dc ile çalışmaktadır dikkatli olun kondansatör bağlantılarına dikkat edin + – kutupları ters bağlarsanız yüksek voltajda büyük patlamalar olabilir devreyi çalıştırmadan önce Sigortalı Elektrik Hattı,koruyucu gözlük kullanın
Dosya indirme LINK listesi (TXT formatında) link-15773.zip şifre-pass: 320volt.com

HIFI CLASS A MOSFET

The recent aquisition of a pair of vintage Infinity RS-5b speakers prompted a search for an amplifier to drive them. According to the documentation that came with my speakers, an amplifier between 35W and 135W is recommended (not my 10W at 10% THD piece of garbage Sharp 3-in-1). Initially, I looked at commercial amplifiers (Yamaha, NAD, and Rotel), but was disappointed at their fairly pedestrian distortion figures. Thus a new hobby project was born :)
I came up with some nominal specifications:
Stereo. Whilst I’ll use it for watching movies, my flat just doesn’t have the room for a full set of surround sound speakers. My main motivation is listening to stereo music sources, so a stereo amplifier is appropriate. Low THD and IMD. In audio-speak, this translates either as clinical or as accurate. I’m an engineer by trade, so prefer terms like THD over “warm” or “cold” which could mean anything. Given that most of the commercial amps offer 0.02% THD or thereabouts, I figured a good target was 0.001%. This means the harmonics and intermods will be 100 dB below the fundamental, and will thus mean that the system performance will be dictated by the source (CD) material, rather than the amplifier.
Ample power. 100W seems a reasonable amount. I currently live in a two bedroom flat, and don’t want my neighbours to kill me :) However seriously, I figured 100W gives me a clear 20dB headroom at a nominal listening level of 1W.
Low noise. I usually listen to my music at reasonably low level, so it’s important for the amplifier input to have a low noise contribution.
Moderate cost. I’m happy to blow around $1000, as long as I get plenty of enjoyable hobby hours (and listening hours) as payback.
Good looks. This thing will (along with my preamp) live in my loungeroom. That means it needs to fit in. I don’t want something that looks like an escapee from my shed, so a significant part of the design is involved with building a nice case. Useability. This pertains more to the preamp, but I wanted the whole thing to be completely remote controllable.
Design Background
When I was a kid, one of my favorite monthly reads was ETI magazine. In January 1981, they published a series of articles describing the ETI477 MOSFET power amplifier, designed by David Tilbrook. This monoblock formed the basis of the “series 5000” HiFi amp. I desperately wanted to build one, but being all of 9 at the time, it wasn’t going to happen.
The neat thing about the series 5000 is that it was built around new (at the time) Hitachi lateral power MOSFETs. Most power MOSFETs (VMOS, trenchFETs, HexFETs etc) use a vertical structure, where the current flows vertically. This has the advantage of stunningly low Rds and hence high efficiency, but does nothing for linearity or capacitance. Lateral MOSFETs are a much simpler structure, where the gate oxide is formed on a flat substrate, and the current flows across the substrate. This results in well defined, controllable device parameters, good linearity, and relatively low gate capacitance. However, the Rds of lateral MOSFETs is nothing to write home about.
Most amplifiers at the time (and now as well) used bipolar output drivers. Bipolar transistors are cheap and plentiful. They have relatively high transconductance, and can operate reasonably fast. However they have some drawbacks when used at high power. The main one is thermal runaway. The gain of a bipolar transistor increases as it gets hotter. That means that if there’s any imbalance between output transistors, the hottest one will pass most of the current, getting hotter until it ultimately expires. MOSFETs don’t have this problem. Their gain decreases with temperature, so they share the load well.
MOSFETs also have a high input impedance at low frequencies, and are capable (when driven by a suitable source) of extremely high slew-rates. Of course this very attribute makes them rather prone to HF oscillation when improperly compensated, but with careful design they’re capable of impressive intermod performance.
So having decided that now was the time to build a MOSFET amp, I wandered into the library at work and dug out the old ETI series 5000 amp articles, and had a read. I subsequently found that the series 5000 wasn’t Tilbrook’s final word on MOSFET amps. In 1987 he revisited the topic for a new magazine, Australian Electronics Monthly. This time (with the AEM6000 amplifier) he went all-out, with a matched-JFET differential input stage, and a complementary symmetrical voltage amplifier stage. A quest for super low distortion figures, with heaps of available gain. This looks like a good place to start.
Optimisation
There were a couple of drawbacks with the design. Firstly, it was based on obsolete TO-3 packaged lateral MOSFETs, and secondly the PCBs (like many kitset boards) were a pretty poor design anyway. I set to work redesigning the PCBs around modern flatpack equivalents (Hitachi 2SK1058 and 2SJ162). While I was at it, I swapped many of the remaining transistors for modern (faster) equivalents.
I made the following active device substitutions:
JFET input diffamp: SST404 (SO-8). Was ECG461.
Low power bipolars: MMBTA06/56 (SOT-23). Were BC547/557 and BC639/640.
Medium power bipolars: MJE340/350 (TO-126). Unchanged.
Power MOSFET drivers: 2SK1058/2SJ162 (TO-3P). Were 2SK176/2SJ56 (AEM6000) or 2SK134/2SJ49 (AEM6005 and ETI5000).
In order to dissipate 100W in an 8 Ohm speaker, one needs to put 28V RMS across the load. That’s 40V peak. At the peak (assuming a resistive load) the amplifier needs supply 5A. Doing the SOA sums (more later) means that 2 pairs of drivers are needed. Further, the Vgs for the MOSFET can be around 10V at high current. This means the supply must be at least 10V greater than the peak output voltage. A twin 40V transformer is appropriate, with a peak secondary voltage of +/-56V.
Now that I’d changed the transistors, I had to play with the values of most of the other components as well, in order to get reasonable performance while maintaining stability. Firstly, I decided that rather than the usual 1V RMS full-power input, I’d increase this a bit, to 1.8V RMS. This allows me to use more of the available dynamic range of my preamp, and requires a gain of 16, or 24dB.
Transistors (and valves) are inherently non-linear devices. They must be linearised, or else they’ll distort the sound. There are three ways to achieve this goal:
Use the transistor over a very small operating range.
Use feedforward to cancel distortion (symmetry).
Use feedback to cancel distortion.
Pretty much all amplifiers use a combination of the three. Feedback has a bad name amongst “audiophile” types. Poorly thought out feedback (especially across multiple stages) can result in oscillation (usually at very high frequency, which isn’t audible in itself, but destroys the performance of the amplifier. Feedback needn’t all be global though. A robust scheme involves linearising each stage of an amplifier independently (for example with emitter degeneration), then using overall feedback (with appropriate compensation) to set the gain.
I used Linear-Tech’s free spice simulator to redesign the circuit around the newer parts. My main changes were to increase the emitter degeneration in each stage, to improve the linearity of each stage, at the expense of available overall open-loop gain. This is an approach that makes for an easily stabilised amplifier.
A somewhat simplified schematic is shown below. Yes, it’s a wonderfully complex beast of an amplifier. Heaps of symmetry, and plenty of stages, for ample open-loop gain. The schematic doesn’t show the AEM6000 amp. It’s my take on Tilbrook’s design. The topology is the same, but the component values are different. For schematics of the AEM6000, you’ll have to visit the library. Click on the schematic shown for a .pdf version of the real thing, including power supply decoupling and gate protection zeners etc.:
power_amp_simplified_schematic
power-amplifier-monoblock_oblique
power-amplifier-poweramp_cased
The design files included are all you need to build your own (should you be nutty enough to want to do so). Many PCB fabrication houses will accept the Protel PCB file, and (provided you give them money) supply you with circuit boards.
Source: http://www.littlefishbicycles.com/index.html Schematic in LTspice format. Board layout in gif format. Parts list in Open Document Spreadsheet format: HiFi Power Amplifier

Dosya indirme LINK listesi (TXT formatında) link-21270.zip şifre-pass: 320volt.com
https://drive.google.com/file/d/0B4dsCzvOuTTPRjc2YlhqWFBUZ2c/view


HIGH POWER 2200W AMPLIFIER CIRCUIT

2200W High cost an amplifier project if you want to go ahead kck87 our friend minding 2200w amp circuit Proteus ares with PCBs have drawn 56 IRFP250 Mosfets used supply voltage is too high... Electronics Projects, High Power 2200W Amplifier Circuit "audio amplifier circuits, transistor amplifier, "
High Power 2200W Amplifier Circuit
2200W High cost an amplifier project if you want to go ahead kck87 our friend minding 2200w amp circuit Proteus ares with PCBs have drawn 56 IRFP250 Mosfets used supply voltage is too high (+-150V) Be careful circuit now has not been tested. 2200W amplifier circuit drawing extension’s source has pcb ares proteus ..
High Power 2200W Amplifier Circuit 2200watt amfi 2 2kv amplifier circuit big power amplifier
High Power 2200W Amplifier Circuit 2200watt amfi pcb amplifier circuit big power amplifier
High Power 2200W Amplifier Circuit proteus ares PCB file: high-power-2200w-amplifier-circuit.RAR
IRFP240 IRFP9240 ile 800W Mosfet Anfi Devresi
irfp9240_irfp240_irf9610_irf610.jpg

2.1 Channel Power Amplifier SOCL504

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.

Specifications
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.

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

200W Super Simple Power Amplifier

Hello guys, this time I will share a circuit of the power amplifier that is very simple but still put forward the sound quality and the power is quite large. This is a super simple power amplifier 200Watt output power that driven by final transistor 2SA1943 and 2SC5200 1 set. Power amplifier type is OCL with Class AB system, and include bias trimpot for setting DC Output power amplifier.
Below is the super simple power amplifier circuit diagram.
200W Super Simple Power Amplifier Circuit
Component List:
R1100k
R233k
R3,R6560R
R4-R5,R827k
R7,R956R
R101k
R114k7
R1210k
R13-R14330R
R15-R160R22
C122n
C210n
C3-C410U
C5,C722U
C6,C8,C10100p
C933U
RV11K
Q1-Q22N5401
Q3MJE350
Q4MJE340
Q5C4793
Q6A1837
Q72SC5200
Q82SA1943
D1-D51N4007

Connector J1 is for audio signal input, J2 Power Amplifier Output, J3 -VDC, J4 +VDC, J5 GND.

This Super Simple Power Amplifier 200W it can work with Power Supply minimum 25VDC up to 45VDC. It can deliver maximum output power up to 200W with 8 Ohm impedance output load.

Below the PCB Layout Super simple power amplifier in 2 Layout Gerber view.
PCB Layout design 200W Super Simple Power Amplifier

Download