282
edits
1A7: Difference between revisions
8393 not 7586
No edit summary |
Vintage dave (talk | contribs) (8393 not 7586) |
||
| Line 19: | Line 19: | ||
Maximum bandwidth is 500 kHz, and common-mode rejection is 50,000 to 1. | Maximum bandwidth is 500 kHz, and common-mode rejection is 50,000 to 1. | ||
Type 1A7's front end is a matched quad of [[ | Type 1A7's front end is a matched quad of [[8393]] [[nuvistor|nuvistors]], | ||
with two in parallel - to reduce noise - on each input. These tubes are | with two in parallel - to reduce noise - on each input. These tubes are | ||
in temperature-equalizing housings, and mounted on a rubber-isolated | in temperature-equalizing housings, and mounted on a rubber-isolated | ||
subchassis. The "coarse" balance adjustment controls the relative | subchassis. The "coarse" balance adjustment controls the relative | ||
heater voltages on the | heater voltages on the 8393's. | ||
Type 1A7 (initially named [[F|Type F]]) was designed by [[John Addis]] and [[introduced in 1966]]. | Type 1A7 (initially named [[F|Type F]]) was designed by [[John Addis]] and [[introduced in 1966]]. | ||