diyAudio (
-   Swap Meet (
-   -   Borbely Class A mosfet_Sales (

nicoch58 13th January 2013 07:24 PM

Borbely Class A mosfet_Sales
1 Attachment(s)
The power stage is config for 16w Class A and then to 50w in A/B with my r-core 40Vac ,can be set for 25w in class A with 32Vac ,the bias can be set 600mA to up 1,2A with trimmer ,now is 0,9 A with 21C up ambient

PSU Driver - 50VA toroid dual mono double diode(farchild stealth ) 2.000F Nichicom Pass True gold 100V (total 4discrete bridge 4.000)
plus two dual mono Salas Shunt reg plus four 1000 Pass True

The psu can be more simple ,ie only one trafo , without the shunt ,still separate psu driver/pw .....

preferred EU , shipping price goes up the thing is quite ....

One channel on pic

nicoch58 14th January 2013 08:53 PM

1 Attachment(s)
the amp work fine as Erno stuff.... Is like new , used only some month the I switch to tube amp .

the driver stage note the dual jfet toshiba....all top notch component
please note my perfect build :p

nicoch58 14th January 2013 09:47 PM

1 Attachment(s)
soldered with kester 44 and mundorf Ag on signal path

driver toroid and Salas shunt , power stage caps and diode

nicoch58 14th January 2013 10:03 PM

Borbely Mosfet Output board with 3 pairs of lateral mosfets Hitachi Renesas 2SK1058/2SJ162.
Driver transistors for output power mosfets are medium power lateral mosfets 2SK216/2SJ79

Telstar 18th January 2013 08:05 PM

Hi, do you have extra mosfets? both power and drivers?
Also pm me the details (in italian) of the PSUs since I dont clearly understand how are they made.

Nikon1975 19th January 2013 03:35 AM




nicoch58 19th January 2013 07:41 AM

Davide PM send

All times are GMT. The time now is 08:06 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2