Important Update:
Hello everyone.
This is the very last batch of PeeCeeBee V4H Rev2 PCBs that are still available to order. After this batch is exhausted no more V4H boards will be printed. A clearance discount of USD5 is added, so the boards are available at USD15 instead of 20.
The main reason for this decision is that sourcing genuine Lateral MOSFETs have become a problem for me. So members who still have access to the MOSFETs may want to consider buying the boards. These will come with the SMD gate-source diodes pre-installed as usual.
Happy Winter!
Hello everyone.
This is the very last batch of PeeCeeBee V4H Rev2 PCBs that are still available to order. After this batch is exhausted no more V4H boards will be printed. A clearance discount of USD5 is added, so the boards are available at USD15 instead of 20.
The main reason for this decision is that sourcing genuine Lateral MOSFETs have become a problem for me. So members who still have access to the MOSFETs may want to consider buying the boards. These will come with the SMD gate-source diodes pre-installed as usual.
Happy Winter!
Attachments
@shaan , @CitizenKane
Hi fellas,
Given the 100mA bias recommendation for each lateral MOSFET in this design, do you recommend the ‘RED‘ or ‘ORANGE’ colour band matched sets of Exicon’s ECX “S” series of lateral MOSFETS, as seen here? :
https://www.profusionplc.com/pdf/selected-mosfets.pdf
I realize it’s not necessary and that it is expensive (~ USD$8.50/ea) for some folks. I’ll probably go with whatever colour bands they have in stock since one can easily bias at 100-150mA/MOSFET in this design as long as sufficient dissipation from the heatsink is available.
Kind regards,
Anand.
Hi fellas,
Given the 100mA bias recommendation for each lateral MOSFET in this design, do you recommend the ‘RED‘ or ‘ORANGE’ colour band matched sets of Exicon’s ECX “S” series of lateral MOSFETS, as seen here? :
https://www.profusionplc.com/pdf/selected-mosfets.pdf
I realize it’s not necessary and that it is expensive (~ USD$8.50/ea) for some folks. I’ll probably go with whatever colour bands they have in stock since one can easily bias at 100-150mA/MOSFET in this design as long as sufficient dissipation from the heatsink is available.
Kind regards,
Anand.
Hi Anand.
No need to go for the matched colored sets. The standard Exicons work just fine. Recommended heatsink size is 300mm L x 100mm H with vertical fins.
Bests
No need to go for the matched colored sets. The standard Exicons work just fine. Recommended heatsink size is 300mm L x 100mm H with vertical fins.
Bests
Hi John.
I am yet to finish the layout for it, and the next peeceebee. So there are two upcoming amps, not one.
I am yet to finish the layout for it, and the next peeceebee. So there are two upcoming amps, not one.
Hi Shaan, I am from Bangalore and would like to get 2 Pairs (4 Boards) could please let me know how can i go about procuring these ?
Hi Shaan.
Happy New Year!
You had promised me that on 12/31/2022 you would send me the boards!
Are you send me the pcb board?
Please send me tracking number!
Thank you.
Diyan Petrov from Bulgaria
Happy New Year!
You had promised me that on 12/31/2022 you would send me the boards!
Are you send me the pcb board?
Please send me tracking number!
Thank you.
Diyan Petrov from Bulgaria
Hi Dian.
I have shipped some packets today. Your packet is scheduled to be shipped tomorrow. I will send tracking ID as soon as I do.
Thanks.
I have shipped some packets today. Your packet is scheduled to be shipped tomorrow. I will send tracking ID as soon as I do.
Thanks.
Update:
PeeCeeBee V5 layout has been done and a pair of prototypes has been ordered. Expecting them by 30th Jan.
There are more transistors per board (some bjts are used in diode mode so no discrete diodes), slightly more gain than V4H. Mounting holes for power transistors in V5 are compatible with V4H. Only power transistors sit underboard (on main heatsink), everything else sits on top.
Stay tuned! 🙂
PeeCeeBee V5 layout has been done and a pair of prototypes has been ordered. Expecting them by 30th Jan.
There are more transistors per board (some bjts are used in diode mode so no discrete diodes), slightly more gain than V4H. Mounting holes for power transistors in V5 are compatible with V4H. Only power transistors sit underboard (on main heatsink), everything else sits on top.
Stay tuned! 🙂
First V5 prototypes are home.
As you can clearly see it has just a couple extra transistors compared to V4H.
As you can clearly see it has just a couple extra transistors compared to V4H.
Attachments
Last edited:
Hi Shaan,
Since you’re moving away from LatFets, BJT or MosFet power transistors for the new designs?
Since you’re moving away from LatFets, BJT or MosFet power transistors for the new designs?
Hi Vunce.
Output devices are BJTs. There are a couple TO220 vertical N-fets in the driver stage however.
Output devices are BJTs. There are a couple TO220 vertical N-fets in the driver stage however.
Good luck with your V5 verification build, hopefully all goes smooth and a GB will follow soon. 😊
