Pumpkin preamp - ordered by Steen , official making thread

Official Court Jester
Joined 2003
Paid Member
DC fix is still waiting ...... pretty much finished in LTSpice , but also pretty much not so simple .....

main reason for that issue being on back of list is fact that Pa's :Pumpkin: ( how dare he !? :rofl: ) is also having caps ...... everywhere :devily:

:Pumpkin: , however good sounding it is , was just innuendo to next thing ;

that thing , not existing in this Universe , sometimes called as Ultrasymmetry ......

:clown:

just chill - caps aren't harmful on that sole position
 
hi ZM,
i have one pcs talema 2x55v 2x0.73A
can i use for stereo (2channel) pumpkin shunty ?

here the pic:
eIMG_20131006_093531.jpg

how to connect properly with the stereo pumpkin.?

thanks.
 
Official Court Jester
Joined 2003
Paid Member
connect black+yellow , to establish center tap for 110V secondary ; confirm proper phasing connecting it to mains and measuring 110V across outer taps (red , orange)

if there is zero V , rotate one secondary

then connect CT to gnd on Shunty input side , outer taps to AC points

make bridges to same points on second Shunty

be sure to make proper ventilation in case , same as proper voltage ratings of caps on input side of Shunty (prior to Q2,Q2a) .... which means 110% x (55 x 1,41)

take care that Q2 , Q2a are heatsinked enough ...... and it's wise to use Irf610/9610 in their position