My passdiy.com B1 pcb & FETs should arrive in the next day or so, and I need to order parts to stuff the board.
I recently built the B1Korg and note that resistor values are quite different -- 100R in the output instead of 1K0 in the original schematic, for example.
Have values been optimized since 2008, is there a schematic somewhere that shows the current thinking on all this? The Korg B1 values are quite different.
I recently built the B1Korg and note that resistor values are quite different -- 100R in the output instead of 1K0 in the original schematic, for example.
Have values been optimized since 2008, is there a schematic somewhere that shows the current thinking on all this? The Korg B1 values are quite different.
Would a 0,5A 24Vdc SMPS be enough to power it or better to go for 1A?
Something like this:
24vdc 0,5a 12 Watt Mean Well gs12e24-p1i Spina Universale Alimentatore AC/DC Adattatore | eBay
Something like this:
24vdc 0,5a 12 Watt Mean Well gs12e24-p1i Spina Universale Alimentatore AC/DC Adattatore | eBay
A silly question, I have some 2sk389 GR on the shelf. Is it possible to use them instand of sk170?
Zen,
Could you please let me know where this is located at "Papa's VFet amps article"?
Thanks, James
Could you please let me know where this is located at "Papa's VFet amps article"?
Thanks, James
Thanks. Another question: I have a dual unregulated +/- 25 VDC. What is the maximum voltage that i can run at the jfet? Usually for small current, I use the TL431 shunted, that seems to sound very well in it semplicity. Is it OK?
current is small, you can decrease rails to buffer in myriad ways, and TL431 is hardly best way
simple cascodes , even with BC550/560, are more elegant solution
simple cascodes , even with BC550/560, are more elegant solution
yes
do the same with ztx550 in lower rail
include 20R trimpot as variable resistor, in source of J1, to set 0 output DC Offset
do the same with ztx550 in lower rail
include 20R trimpot as variable resistor, in source of J1, to set 0 output DC Offset
