300
edits
W: Difference between revisions
Jump to navigation
Jump to search
m
add link
Vintage dave (talk | contribs) (Output Amp mod kit) |
Vintage dave (talk | contribs) m (add link) |
||
| Line 39: | Line 39: | ||
Original production uses a pair of type [[8056]] [[Nuvistor|Nuvistors]] in the front end. In 1971, at serial number 7000, Type W was converted to FET input to reduce drift. Modification kit 040-0590-00 was offered to retrofit existing instruments. | Original production uses a pair of type [[8056]] [[Nuvistor|Nuvistors]] in the front end. In 1971, at serial number 7000, Type W was converted to FET input to reduce drift. Modification kit 040-0590-00 was offered to retrofit existing instruments. | ||
Original production Type W in a 556 mainframe won't | Original production Type W in a [[556]] mainframe won't | ||
meet spec for overdrive recovery time, because an overdriven W | meet spec for overdrive recovery time, because an overdriven W | ||
passes enough common-mode to the mainframe vertical amp to | passes enough common-mode to the mainframe vertical amp to | ||