DIY: Pass F5 turbo v2 initiated

[omishra]

Another update - MOSFETs are in Pune local PO. Waiting for delivery today, seems holiday or Monday. Diodes are following this.

:yahoo:
It's here, got just now, this packet contains only MOSFETs and 100 diodes. 4lbs declared price 36.0USD and postage 52.0USD. Customs for this packet is Rs 2200. :sad: now waiting for another parcel. That will contain remaining diodes.

 

[anilva]

:yahoo:
It's here, got just now, this packet contains only MOSFETs and 100 diodes. 4lbs declared price 36.0USD and postage 52.0USD. Customs for this packet is Rs 2200. :sad: now waiting for another parcel. That will contain remaining diodes.

That's pretty fast receipt from US.

 

[bijinmb]

The below (SE 204)one i bought from
Shan Enterprises - Heat Sink Manufacturers

for my hiraga - le monstre build.

https://picasaweb.google.com/104550501856680949171/DIYAmplifier

they are cheaper than perfectmetal.

 

[omishra]

The below (SE 204)one i bought from
Shan Enterprises - Heat Sink Manufacturers

for my hiraga - le monstre build.

https://picasaweb.google.com/104550501856680949171/DIYAmplifier

they are cheaper than perfectmetal.

I know this profile. This same used by bajaj uncle in Norge amplifier. It's available here in Pune too. It's insufficient and makes horizontal fins.

 

[bijinmb]

This can be used for 8-20W Class A Amps and horizontal fins might not be a problem there, but for F5 Turbo as you said might need bigger than this and vertical fins also do good advantage.

When i get time i will be developing an Oil Cooled type heat sink to use with class A amp applications hence can reduce the need for big heat sink. I shall post images when i done with that.

 

[quad]

Something useful to look at - silicone heat conductive pads now made in India with
thermal conductivity seems better than the usual heat sink compounds.
They have heat-pipe type heatsinks too.

Thermally Conductive Gap Fillers

 

[pdhanwada]

Something useful to look at - silicone heat conductive pads now made in India with
thermal conductivity seems better than the usual heat sink compounds.
They have heat-pipe type heatsinks too.

Thermally Conductive Gap Fillers

Quad,

Thanks for your help. I do need such compound to attach between the heat sinks. Let me check with manufacturers if they sell in small quantities.

Thanks
Pandu

 

[sachu888]

Jfets received

Received matched Jfets from Spencer today,no custom on them.Waiting few more parts to come than will start shipping kits.
Can anyone suggest me good packing material for F5 kit.I am finding it very difficult to get cardboard boxes of F5 PCB size.

Regards,
Sachin

 

[quad]

Re: Jfets received

Can anyone suggest me good packing material for F5 kit.I am finding it very difficult to get cardboard boxes of F5 PCB size.

Regards,
Sachin

How about cardboard tubes?

Industrial Tubes - Shipping Tubes, Mailing Tubes, Cardboard Tubes and Paper Tubes Supplier & Manufacturer

 

[sachu888]

Re: Jfets received

How about cardboard tubes?

Industrial Tubes - Shipping Tubes, Mailing Tubes, Cardboard Tubes and Paper Tubes Supplier & Manufacturer

Those looks very good for shipping will try in local market.

Regards,
Sachin

 

[bibin3210]

A VERY informative article about horizontal vs vertical heatsinks:

http://www.thermalsoftware.com/vert_vs_horz_sink.pdf

Thanks,
Bibin

 

[pdhanwada]

Can I use these for Preamp input into the amp. My back plate is 7.5 mm thick and hence I cant use the regular rca jacks whose threads are much smaller.

Neutrik NF2D 2 Phono RCA Socket Nickel Panel D Shape w Colored Washer Red | eBay

Thanks

 

[omishra]

Can I use these for Preamp input into the amp. My back plate is 7.5 mm thick and hence I cant use the regular rca jacks whose threads are much smaller.

Neutrik NF2D 2 Phono RCA Socket Nickel Panel D Shape w Colored Washer Red | eBay

Thanks

YOu can use it and get from Indian Dealer of Neutrik, Kiran Sales, Mumbai

Go to product, then click heatsink and then click connectors. The webpage has weird navigation.

 

[bibin3210]

Can I use these for Preamp input into the amp. My back plate is 7.5 mm thick and hence I cant use the regular rca jacks whose threads are much smaller.

Neutrik NF2D 2 Phono RCA Socket Nickel Panel D Shape w Colored Washer Red | eBay

Thanks

It is also available from MX
MDR Electronics - MX Electronics - Home Theater Cables & Connectors - Computers & Laptop Accessories - Pro Audio / Studio Audio Cables & Connectors - Audio Video Components & Accessories - Fiber Optic Component & Accessories - Cable TV Component & Ac

Thanks,
Bibin

 

[omishra]

Okay..so wify is out and I can scatter the bounty on bed.

All parts are separated and packed to make individual sets. Only waiting for 11 sets of diodes from US. Once they are in, I am done.

MOSFETs, clips, sleeves, presets, NTCs, small switching noise eliminating caps and ground isolators bridges.

 

[pdhanwada]

My progress on the cabinet making

This is the first time I am working with aluminium cabinet. Till now made satisfactory progress.

My cabinet making progress report.

Material details
Front plate and Back plate thickness 7.5mm
Top and bottom plate 3 mm
Angler 1 inch wide both ways and 3.5 mm thick.
Screws used mostly stainless steel m5 and 12 mm deep for heat sinks and m5 and 20mm deep for bolt nut combination connecting front and back plates to the anglers.

Got the cabinet done. Need to make hole for power plug. I had trouble finding trapezoidal die to make. Will look into other options.
Need more investigation on the RCA jack fitting before I make holes for that.

Front two holes for leds
Back 4 holes for speaker binding posts. Middle hole for the switch.

WOrking with aluminium is significant effort. So far spent aroung Rs 2000 for job work. Rs 2500 for the aluminium material.

To make to it scratch proof, Plan on black anodizing the heat sinks and the top plate.
Will do aluminium anodizing on the front and the back plates.

want to place the spindle of transformers in the middle of the cabinet.

Thanks
Pandu

 

[omishra]

Pandu, this is great and you are leader for us. Seems most important thing for this build is on the way.

 

[pdhanwada]

More pictures loaded in imageshack

ImageShack Album - 7 images

Thanks
Pandu

 

[captrajesh]

My cabinet making progress report.

Material details
Top and bottom plate 3 mm

IMO 3mm for the bottom plate may be less because mounting the trafo could lead to some sagging. Just my 2 cents.

@Omishra & Sachu888, what about the caps?

 

[pdhanwada]

IMO 3mm for the bottom plate may be less because mounting the trafo could lead to some sagging. Just my 2 cents.

Agreed. I plan to reinforce the bottom plate with a 10 mm plyboard on the bottom side.

Thanks
Pandu