a litle description
76 is loaded with a 33k restsitor biased with an unbypassed 1k5 cathode resistor, direct coupled to 1/2 a 6sn7 which is a cathode follower loaded by a 20k cathode resistor.
There is a 1uF dc protection cap on the output and a 1 meg shunt resistor to maintain stability should it be disconnected from the power amp while it is turned on.
B+ is 400v, there is no decoupling between V1 and V2 but the two channels are seperated by a pair of final LC stages.
It is very elegant and as an early design has been borrowed from many fold.
76 is loaded with a 33k restsitor biased with an unbypassed 1k5 cathode resistor, direct coupled to 1/2 a 6sn7 which is a cathode follower loaded by a 20k cathode resistor.
There is a 1uF dc protection cap on the output and a 1 meg shunt resistor to maintain stability should it be disconnected from the power amp while it is turned on.
B+ is 400v, there is no decoupling between V1 and V2 but the two channels are seperated by a pair of final LC stages.
It is very elegant and as an early design has been borrowed from many fold.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Tubes / Valves
- Need the Ogirin Circuit of Bruce Berman