Modded Crack - add bypass cap, choke and Cree diodes

[Deke609]

In all seriousness, that first pic looks like art. A "found object" sculpture: a cyborg centaur. If it ever fails, you can sell it as a postmodern commentary on the state of the individual in the age of automation, digitization, miniaturization ...

cheers, Derek

 

[baseonmars]

In all seriousness, that first pic looks like art. A "found object" sculpture: a cyborg centaur. If it ever fails, you can sell it as a postmodern commentary on the state of the individual in the age of automation, digitization, miniaturization ...

Sounds like I could have my retirement fund sorted with a few well timed, elaborate failures

 

[Paul Birkeland]

So something else you could try regarding the cell tower.  Install one end of a Z5U cap to each tab on each RCA jack.  Twist the free ends together, then run a wire from those ends to the ground tab on the IEC power entry module.

 

[ALL212]

@baseonmars

Way cool implementation of the diodes!! Should I build another Crack I think I’d use your method.

 

[Love Rhino]

Speaking of cree diodes!  When installing the diodes (using the pic I found earlier in the thread for wiring) am I removing the exising wiring to the power?  I believe 18 and 19L?

 

[baseonmars]

So something else you could try regarding the cell tower.  Install one end of a Z5U cap to each tab on each RCA jack.  Twist the free ends together, then run a wire from those ends to the ground tab on the IEC power entry module.

Hey Paul, so... I had more or less given up on getting rid of the last night until one night when I heard it, whilst in bed and with ear plugs in. It must be tinnitus that sounds similar to RFI. I feel like a bit of an idiot but figured I'd come clean in case there are others out there chasing after the last bit of noise.

For what it's worth the diodes and tube shield did have a measurable difference on noise floor/RFI reduction, but the last bit was definitely in my head/ear.

 

[2wo]

I have a cell tower about 500 feet away from my house and it has never been a problem

Now if I could say the same for the shitty power I get...John

 

[Jimb0]

PCB - https://www.partsconnexion.com/PCB-77727.html
Cree Diodes https://www.mouser.co.uk/ProductDetail/Wolfspeed-Cree/CSD01060A?qs=%2Fha2pyFaduha8e7L7P6H8AQPAaWzRYR18hPNYjU5%252Bzc%3D

Is partsconnexion the only place to get the PCB?

Also, it's been a while since these were released. Are these still the Cree Diodes to use or is there something else out there?

 

[Paul Birkeland]

For the Crack if you're having trouble finding the 1A/600V Cree diodes, there are higher current versions that you can substitute.

 

[tim273]

PCB - https://www.partsconnexion.com/PCB-77727.html
Cree Diodes https://www.mouser.co.uk/ProductDetail/Wolfspeed-Cree/CSD01060A?qs=%2Fha2pyFaduha8e7L7P6H8AQPAaWzRYR18hPNYjU5%252Bzc%3D

Is partsconnexion the only place to get the PCB?

Also, it's been a while since these were released. Are these still the Cree Diodes to use or is there something else out there?

Those ones are what I think most people used, but you could try these: https://www.mouser.com/ProductDetail/Wolfspeed-Cree/C6D04065A?qs=%2Fha2pyFadujYuAKy3YnKTEHyWCBrjYBu8BL2A6RZVomCRp63dgtoXQ%3D%3D

 

[Jimb0]

Thanks for the help guys. I am going to try those cree diodes that you suggested Tim!

 

[davve34]

No need to change the values on the caps in the power supply when added choke(s) ?

 

[Paul Birkeland]

No.

 

[Jimb0]

Hi guys. I'm buying some Cree Diodes from PartsConnexion. Can I use 1A 600V?

 

[Paul Birkeland]

Hi guys. I'm buying some Cree Diodes from PartsConnexion. Can I use 1A 600V?

Yes.