Pumpkin Preamp - Perfect for F4

Official Court Jester
Joined 2003
Paid Member
there it is
schm and render of pcb enclosed

now I'm waiting for pcb protos and heatsinks ,just to tweak some values - this time I'm lazy (or spoiled?) to make Ikebana prototype

I don't like to use nag nag protoboards where I can't see connection, contrary to Oly......pcb wizz with 100 yrs of needlepoint experience

this preamp is in fact Steen's wish, sorta half UGS bla bla
seems that this days I can't make anything what Papa already didn't

why that reminds me on old story about pigs and pearls :clown:


there is proverb in my native........"there is no bad swill for good pig"



Pink Floyd ZM
 

Attachments

  • thepumpkinschwcl.gif
    thepumpkinschwcl.gif
    33.3 KB · Views: 12,932
Official Court Jester
Joined 2003
Paid Member
lookie
lookie

double sided pcb , in fact just several traces on upper plane


this preamp is intended (Steen again) even for F4 driving, with little more juice even headphones ; I'll certainly try it on my spks (sorta biggg headphones with 16 ohm impedance :clown: )
 

Attachments

  • thepumpkinpcbw.jpg
    thepumpkinpcbw.jpg
    86 KB · Views: 11,174
Official Court Jester
Joined 2003
Paid Member
Babowana said:
Did you simulate all the CCSs, chky?


:darkside:


PS Last night farewell party killed me . . . :dead:


there is nothing simulated in that schmtc
I'm too lazy to learn sim proggies
in time needed to put schmtc in any sim proggie,I can use iron and parts instead......at least to gadgets I mess with

why..........you see something wrong........?
:clown:


"farewell" ..........to whom?
 
Official Court Jester
Joined 2003
Paid Member
FastEddy said:
Zen Mod: regards Pumpkin ... I like it, quite interesting. That's a rather clever PCB layour, putting the heat sink in position to act a shield from the PS input & connections ... I'll bet your PS transformer is intended to go on that side of the 'sink as well ... ;)


xformer is intended to go on other side of house :clown:

Oly is clever half of Pumpkin team.........hehe

I'm there just for bothering ..........:bawling:
 
Official Court Jester
Joined 2003
Paid Member
Babowana said:
A............

By the way, no R values? Just wondering . . .



:darkside:


they'll be here after thorough check ;
goal is to achieve DC stability ,to be able to use it DC coupled

in this way - without values , I think that will be less questions in first time......."why is this//why isn't"

you didn't answer...who's farewell party ?

btw- Korean girl is mad when you talk about two pumpkins?