JLCreationsPh Class-D Amplifier Modules and PCBs - Page 13 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Vendor's Bazaar

Vendor's Bazaar Commercial Vendors large & small hawking their wares

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 5th July 2014, 05:32 AM   #121
diyAudio Member
 
Join Date: Sep 2010
Location: Quezon City
Complete stereo power amp setup: (no preamp)

2 x JLAudiophile-250D Modules with built in speaker protect
Stereo Automatic Fan control
Power Supply with Clip Indicator
CPU Fan
EI Core with KBPC3510 Bridge Rectifier.
Attached Images
File Type: jpg 14550531325_0a48b42a2b_c.jpg (283.5 KB, 250 views)
  Reply With Quote
Old 6th July 2014, 10:53 PM   #122
diyAudio Member
 
Join Date: Mar 2007
Location: California
Quote:
Originally Posted by jlester87 View Post
Complete stereo power amp setup: (no preamp)

2 x JLAudiophile-250D Modules with built in speaker protect
Stereo Automatic Fan control
Power Supply with Clip Indicator
CPU Fan
EI Core with KBPC3510 Bridge Rectifier.
...seems to still be missing a few connections!

Looks good so far.
__________________
"Hardware eventually fails. Software eventually works" - Michael Hartung
  Reply With Quote
Old 10th July 2014, 09:55 AM   #123
diyAudio Member
 
Join Date: Sep 2010
Location: Quezon City
Quote:
Originally Posted by CharlieLaub View Post
...seems to still be missing a few connections!

Looks good so far.
Thanks! Here's the completed amp.

Will be selling unsoldered kit soon

I just ordered ICs and mosfets from mouser, inductors from coilcraft USA. Capacitors are from RS Phils.
Attached Images
File Type: jpg jlaudiophile.jpg (332.1 KB, 205 views)
  Reply With Quote
Old 27th July 2014, 04:29 PM   #124
diyAudio Member
 
Join Date: Sep 2010
Location: Quezon City
JLAudiophile-250D PCB now comes with pre-soldered SMD parts.

Jlaudiophile 250D 380W 600W IRS2092 Mono Class D Amplifier PCB IRAUDAMP7 | eBay
  Reply With Quote
Old 13th August 2014, 09:46 PM   #125
diyAudio Member
 
DarpMalone's Avatar
 
Join Date: Sep 2008
Location: Toronto
Hi JLester87,

I've almost completed the build of your JLAudiophile-250D but I'm confused about something... The BOM calls for 2x 1n4148 but it seems to me that it requires 4

2 under the board between gate resistors r24, r25 as shown in the Assembly Steps
2 on op of the board where printed (1 next to the relay & 1 next to Q105)

Can you please clarify?

Thanks,
D
  Reply With Quote
Old 13th August 2014, 11:16 PM   #126
diyAudio Member
 
Join Date: Sep 2010
Location: Quezon City
Yes you need 4pcs 1n4148. Thanks for the correction, I'll update the BOM.

Regards,
Lester
  Reply With Quote
Old 15th August 2014, 09:09 PM   #127
diyAudio Member
 
DarpMalone's Avatar
 
Join Date: Sep 2008
Location: Toronto
Default Issue on 1st power up (JLAudiophile-250D)

Hi Lester

I've just completed the 1st JLAudiophile-250D board and I've connected power for the 1st time (using a bulb current-limiter in series).

The 12v relay seems to operate fine, however there seems to be a short when I connect the +/-45v (voltage and polarity verified). I've checked the polarity of all of the caps and diodes. Do you have any suggestions on what I should be looking for?

Click the image to open in full size.

I know the SM caps look pathetic (it's my 1st time soldering such small SM components). I tested for shorts though.

Click the image to open in full size.

Also, do you prefer me contacting you via email for support or is this forum okay?

Thanks,
Darp

Last edited by DarpMalone; 15th August 2014 at 09:13 PM.
  Reply With Quote
Old 15th August 2014, 10:47 PM   #128
diyAudio Member
 
Join Date: Sep 2010
Location: Quezon City
Hi Darp,

Please check for shorts in the following components:

1. Output mosfets
2. TIP31C
3. +V, -V, GND
4. Across SMD Caps under the PCB.

Please check the value of feedback resistor, it must be 120k, 1/4W. I can't clearly see the value in the picture.

The resistor for 5v6 zener must be 3.3k and not 3.3 ohm. Also check if zener is already shorted

Also, you must put the LED directly in the PCB (as shown in the picture). It detects low side gate drive, it might pick up noise if you extend wire into it.

Regards,
Lester
Attached Images
File Type: jpg IMG_20140815_162855.jpg (755.0 KB, 31 views)

Last edited by jlester87; 15th August 2014 at 10:50 PM.
  Reply With Quote
Old 16th August 2014, 01:17 AM   #129
diyAudio Member
 
DarpMalone's Avatar
 
Join Date: Sep 2008
Location: Toronto
Quote:
Originally Posted by jlester87 View Post
Please check for shorts in the following components:

1. Output mosfets
2. TIP31C
3. +V, -V, GND
4. Across SMD Caps under the PCB.

Please check the value of feedback resistor, it must be 120k, 1/4W. I can't clearly see the value in the picture.
No shorts found here and yes, FB resistor is 120k, 1/4W

Quote:
The resistor for 5v6 zener must be 3.3k and not 3.3 ohm. Also check if zener is already shorted
The zener's not shorted... I was hoping that Digi-key messed up and sent me the wrong value but I checked my order and sure enough, the mistake was my own
I'll get some 3.3k resistors ASAP... Could the incorrect value of the resistor for the 5v6 zeners be causing the rails to short to GND?

Quote:
Also, you must put the LED directly in the PCB (as shown in the picture). It detects low side gate drive, it might pick up noise if you extend wire into it.
Gotcha. I was planning to wire it to the front of the enclosure. I guess that was a bad idea.

Thanks again,
Darp
  Reply With Quote
Old 16th August 2014, 01:42 AM   #130
diyAudio Member
 
DarpMalone's Avatar
 
Join Date: Sep 2008
Location: Toronto
Hi again Lester,

I found some 3k48r, 1/4W resistors and threw them in temporarily with the current limiter, just to check... The blue light began to glow, beautifully I'll wait for the correct value before I try further testing.

I really appreciate your help and your prompt reply. I also purchased some of your 1200D boards. I look forward to building them once this project is completed.

Regards,
D

Last edited by DarpMalone; 16th August 2014 at 01:49 AM.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
B&O ICEPower 500ASP Class-D Amplifier Modules vulture Swap Meet 14 15th September 2013 07:33 PM
FS: Bang-Olufsen (B&O) ICEpower 1000ASP D-Class Amplifier Modules beaux1977 Swap Meet 8 20th July 2013 06:53 AM
FS: Bang-Olufsen (B&O) ICEpower 250A D-Class Amplifier Modules beaux1977 Swap Meet 10 20th May 2013 11:57 AM
FS: Eleven 2x TPA3123, 25W x 4 Class-D Amplifier Modules Applesauce Swap Meet 3 1st May 2013 01:12 AM
FS: A few class D amplifier modules RHosch Swap Meet 8 13th October 2005 06:20 AM


New To Site? Need Help?

All times are GMT. The time now is 07:35 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2