 
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
|
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
In Reply to: Re: You're right (again), Steve -- you win! (nt) posted by john curl on July 31, 2003 at 18:47:05:
LH0002 you're thinking of? "LH" stood for "Linear Hybrid", which is why they are no longer made. They were actually separate dies that were bonded inside the same case. In those days there wasn't any way to make fast complementary transistors on the same die.This part did feature the complementary devices in series, but did not have Hawksford's bootstrap feature that keeps the voltage across the first device constant. Like I said, it's a clever idea, but probably too clever to actually sound good.
Best regards,
Charles Hansen
Follow Ups:
If I remember correctly, the '0002 had a pair of 2219's and 2907's, and maybe two or four resistors. My boss in a hybrid company was trying to second source the part.I recall it was a pretty fast bugger for it's time. One problem was I/O offset, spec'd in the low millivolt I think...Required matched transistors, usually off the same wafer in consecutive locations.
Cheers, John
If I remember correctly, the '0002 had a pair of 2219's and 2907's, and maybe two or four resistors.
se
Haven't seen that in 20 years..thanks..Course, the round package and leads were kovar..made them real easy to move through the production line, cause the trays all had magnetic posts.
Cheers, John
This post is made possible by the generous support of people like you and our sponsors:
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]