Monthly Archives: December 2014

Sanwa PC510 Battery Replacement with Panasonic 9V Extra Heavy Duty

Do you realize that your measurement device also need a battery replacement? Some might not aware about this. Not only your digital device, but also your analog “needle” based measurement device. They do need battery replacement. I bought this Sanwa...
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DIY Power Supply Cable with Fuse and Alligator Clips

I’m not quite sure if the title above is correct, but I just can’t figure out something better. Basically, when you are doing DIY, then you will play a lot in breadboard or something that’s not in proper or neat...
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RCA 7N7 Vacuum Tube (to Replace 6SN7)

It’s always interesting to try something new – especially vacuum tube. Sometime you can get something from unknown thing. I’m quite sure we are familiar with 6SN7 vacuum tube, which is commonly used in pre amplifier and even a lot...
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Universal Tube Power Supply Unit Design Plan

As a DIY, I think it’s important to have a dedicated power supply module. I have tried several design, but finally got tired if I have to finalized the build into something complete. Not to mention that space might be...
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J&K Audio Design Custom Level 4 Power Transformer

After a long time waiting, finally I got this transformer on hand – myself. This is the Ultimate Level 4 Power Transformer from J&K Audio Design. You can read some detail here and here. My first impression was: Heavy! Each...
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