PeeCeeBee V4H GB

[J.M.K]

GROUND LOOP BREAKER CIRCUIT

Hi !

Not very clear on my pictures, but it's been already detailed in the V4 thread and some other places:

Google Image Result for https://easyeda.com/normal/Ground_Protection_Circuit-98cc20cce6d24697a067904073c85186

Google Image Result for https://enjon.uk/wp-content/uploads/2018/11/ground-loop-breaker-2.jpg

JM

 

[shaan]

GB UPDATE:

Torvbakkane - 6 PCBs - PAID
Faizal Mansar Alam - 2 MODULES - PAID
J.M.K - 4 PCBs - PAID
prairieboy - 2 PCBs - PAID
Pistollero - 2 PCBs + MOSFETS - PAID
RobSoet - 4 PCBs + MOSFETS - PAID
Rick G - 4 PCBs - PAID
blek stena - 2 PCBs - PAID
nrabbit - 2 PCBs + MOSFETS - PAID
deps - 2 PCBs - PAID
Greg1017 - 2 PCBs + MOSFETS - PAID
routhun - 2 PCBs - PAID
CitizenKane - 4 PCBs - PAID

 

[Kokanee]

Hi Shaan,

Any problem using the Mosfet snubber module on xrk971 Etsy website?. Would connect the snubber module to the mosfet connection on the pcb, with flying leads & molex connector.

Thanks for the help,

MM

 

[shaan]

Hi MM.

No need to connect snubbers to the mosfets. Also, I can't find any snubber on the website. Any link?

 

[Kokanee]

Hi shaan,

See link:

MOSFET Snubber Helper Board | Etsy

 

[shaan]

Placing the MOSFETs off-board and connecting through wires is not recommended. However, feel free to experiment if you want.

 

[Kokanee]

Thanks for the info shaan. I will probably build as you suggest. Could you please answer my question on the PeeCeeBee PSU thread. Thanks for the support.

MM

 

[shaan]

Update:

PCB batch shipped from fab. Expecting them in a couple days.

 

[surajspai]

Payment done for a pair of boards.hope to build it soon.

 

[shaan]

GB UPDATE:

Torvbakkane - 6 PCBs - PAID
Faizal Mansar Alam - 2 MODULES - PAID
J.M.K - 4 PCBs - PAID
prairieboy - 2 PCBs - PAID
Pistollero - 2 PCBs + MOSFETS - PAID
RobSoet - 4 PCBs + MOSFETS - PAID
Rick G - 4 PCBs - PAID
blek stena - 2 PCBs - PAID
nrabbit - 2 PCBs + MOSFETS - PAID
deps - 2 PCBs - PAID
Greg1017 - 2 PCBs + MOSFETS - PAID
routhun - 2 PCBs - PAID
CitizenKane - 4 PCBs - PAID
surajspai - 2 PCBs - PAID

PCBs home! Will start sending shipping invoices to pending members in a day. In the meantime will install the diodes and get packaging material!

 

[viki_v2]

GB UPDATE:

Torvbakkane - 6 PCBs - PAID
Faizal Mansar Alam - 2 MODULES - PAID
J.M.K - 4 PCBs - PAID
prairieboy - 2 PCBs - PAID
Pistollero - 2 PCBs + MOSFETS - PAID
RobSoet - 4 PCBs + MOSFETS - PAID
Rick G - 4 PCBs - PAID
blek stena - 2 PCBs - PAID
nrabbit - 2 PCBs + MOSFETS - PAID
deps - 2 PCBs - PAID
Greg1017 - 2 PCBs + MOSFETS - PAID
routhun - 2 PCBs - PAID
CitizenKane - 4 PCBs - PAID

Hi Shaan
Howmuch for a pair of pcbs.

 

[shaan]

Hi Shaan
Howmuch for a pair of pcbs.

Hi Viki.

Rs.2800 plus shipping Rs.150.

 

[gtose]

Thanks shaan, had a good look at the tracks, and very easy to do to add the two collector resistors for Q3 and Q4.

Finally looking to resurrect my dead V4H and also interested in adding these protection mods to my rev1 build (for obvious reasons ). As Gary mentioned, it seems pretty straight forward for this one, but before I go cutting traces, I wanted to confirm in the attached picture that I've identified the right place to cut and insert a 4k7 resistor.

Hope things have been well, looking forward to getting the V4H playing again!

Greg

 

[gtose]

I will take note of your advice for the future. I bought these pads months ago and just open the pack yesterday , They are different , ultra thin and very solid once compressed it's more like a mica and nothing to see with silicone.
As i have some extra i'm going to mount one on a heatsink and place a transistor in hot mode during one week test .After all maybe they are very good all the famous sellers have them for TO-247.

abanico,

Not sure how your testing went, but for what its worth, I did use these "ulTIMiFlux" pads (Blocked) on my V4H build. No complaints at all and much less messy than the traditional mica + compound. They are indeed isolated and I had no issues with them. One downside is that if you have to unmount them, you will likely need to replace them since the compound is caked on at that point.

Greg

 

[shaan]

Finally looking to resurrect my dead V4H and also interested in adding these protection mods to my rev1 build (for obvious reasons ). As Gary mentioned, it seems pretty straight forward for this one, but before I go cutting traces, I wanted to confirm in the attached picture that I've identified the right place to cut and insert a 4k7 resistor.

Hope things have been well, looking forward to getting the V4H playing again!

Greg

Hi Greg.

Those are.the correct tracks.

 

[Kokanee]

Hi shaan for revision 1, can I get by with 33pf silver mica cap rather than 47 pf mica cap, and is 120R OK in place of 100R resistors.
Thanks,

MM

 

[Audio Mo]

Hi shaan

What is required to build dual mono amp, and do you sell fully assembled modules? Cost? required PSU?

 

[shaan]

Hi shaan for revision 1, can I get by with 33pf silver mica cap rather than 47 pf mica cap,

Probably. But I won't recommend it.

and is 120R OK in place of 100R resistors...

Absolutely.

 

[shaan]

Hi shaan

What is required to build dual mono amp, and do you sell fully assembled modules? Cost? required PSU?

PM sent.

 

[abanico]

gtose,
i'm like you very satisfied with these pads . Made a rough try with one transistor one week non stop at 60 degrees (my kitchen infrared) .Had nothing to measure the precise temperature so only the perception is working sure better than silicone .No puncture risk ( ultra thin and strong film), after some use look at the torque of the nuts.
Only one use and not so cheap.