|
VR57Sensibly equivalent¶ to:
|
|
|
The VR57 is an octode frequency changer or mixer that dates to 1940. The VR designation indicates a pre WWII RAF use. The manufacturer is not marked and the zinc paint is breaking away from the glass.![](../pics/acl0357a.jpg)
There are no details on the reverse. The classic envelope is 30 mm in diameter and, excluding the IO base pins, is 84 mm tall.References: Data-sheet & 1043. Type VR57 was first introduced in 1940. See also 1940 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc | ![](../static/key.gif) m | h | a | g3,g5 | g1 | g2 | h | k | g4 |
|
|
Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/pdflogo.gif)
| 6.3 | 0.2 | 250 | 50 | -2 | 1.0 | 0.8 | 2.0M | 0.55 |
|
Updated May 18, 2021.
|
|