Sorry , in an earlier post i have indicated IRFZ34 you need IRF9Z34.
BS170 is an N chl device. another BS250 is there but it has higher ON resistance and would drop more voltage.

IRF9Z34 is a PMosFET. 60V and Very low ON resistance. perhaps you may try NTD4P06 in DPAK. manage to solder it or make the pcb fresh.

__________________
Regards,
Sarma.

 

Hi Robotsmani,

I have not been able to find a discrete equivalent to the IRF9Z34 mosfet which is only available as a smd; unless someone knows differently.

The function of the mosfet Q3 and its associate Q2 are not an essential function of the programmer - thats one of the reasons I suggested Bluerooms circuit as its much simpler but equally effective.

Assuming you have all the other parts to hand now to build the mcu hobby version just build it but leave out Q2 and Q3 and it will be fine.

 

IRF9Z34 mosfet is a p channel fet the bs170 is n channel see if you can get any BS250P for IRF9Z34

__________________
Burt
http://mybe80be.com
http://stores.shop.ebay.com/mybe80be__W0QQ_armrsZ1

 

BS170 equivalent is 2N7000 with opposite pinout.

 

Is anybody have the pickit2 lite pcb version?

Thanks,
Robotsmani

 

As you make such things only once, better to make pickit2 as original as Microchip.
there is a link for one artwork that works well with mostly thro hole components.
as you get specific components you can load them, while initially bypassing them. But the PCB need to be made only once. it is uploaded by Nishal at
PicKit 2 FULL with TH components - Need help with layout on 18th Jan2009.

Here the transistors are to be pin swapped if you don't get original Philips BC639 and 640 with centre collector. also few minor errors are there, I could guide you to go thro' if you are interested. It is a one go PCB.

__________________
Regards,
Sarma.

 

Thanks sarma,

i am interested on this. Do you have any parts list for this. i can't find it. Let me first collect the parts first. This weekend i am going to make the pcb for pickit2 clone, LC meter and ofcourse the pickit2 full (any suggestion or tips?). i will update once i have done.

Do you have any idea, where do i get 3-6v dc geared motor in bangalore? online shop are costly and shipping charges also

Thanks,
robotsmani

 

First you try to manage BC639 and BC640 from philips make ( not BEL)
the Philips ones have centre collector.

Attached Files

PICKIT2 th Parts list.doc (27.5 KB, 78 views)

__________________
Regards,
Sarma.

 

thanks sarma,

i got the bs250, bc639(phillips) and irf9z34. For bc640, i have to wait. The shop owner told me that he will get it next week.

What is the diff between BEL made and Philips made? I have the BEL made. Can't i use this one?

Anyway i have one week time to build the kit. This week i am building the pickit2 clone

Robotsmani

 

the pin out matches the artwork
bel follows CBE and Philips followed BCE fahion
please see the datasheet
what was cost of 9z34?

__________________
Regards,
Sarma.

 

irf9z34 - 32rs
BC639 - 5rs
BS250 - 12rs

There is shop who is having all the rare components. He told that, he is the only supplying all the components to the market(sp road, bangalore) :-):-)

Robotsmani

 

there is a data change for the pin out.
BC639 and BC640 follow ECB order
BS170 and BS250 would follow SGD order.
IRF9z34 , if i remember, follows GDS order
however better confirm as I remember various styles are there for BS250 and BS170 / 2N7000.
you may check the brand you have and get the datasheet from alldataseet.com
other details i shall be posting you regarding minor changes in PCB of Nishal.

__________________
Regards,
Sarma.

 

Hi sarma,

still i am not getting the bc640(phillps). i am going to make the pcb with the equallent. can you please let me know what are the minor changes in the nishal pcb.

thanks,
robotsmani

 

Hi Sarma,

As per your suggestion i build the pickit2 full TH. But it is getting following errors


I build the circuit using nishal pcb and made the changes suggested by sarma



And me_guitarist




My pickit2 is detected and connected. The green led lit up.

I started troubleshoot i am getting following error

when i calibrate i am getting volts of 4.84v in pin 2 & 3, click on calibrate i am getting error message

When i connected 16f84a thru' ICSP the device is not detected.
Sometime it is detected as 16f882 or 16f884. and sometime the
Device : Unsupported Part (ID=3000)

Please help me....


Thanks,
robotsmani

 

FYI

i am uploading the schematic and pcb layout files here...

Is anybody there to help me out....


Thanks,
robotsmani

Attached Files

	PicKit2 Original.zip (88.5 KB, 75 views)
	PicKit2 PCB Layout.pdf (59.3 KB, 77 views)