| Tube |
A |
B |
Filament |
L |
R |
Socket |
Press |
Notes |
|---|
| 2C34 | 7 |
5 | 6.3 | 50 |
30 | D | AMPL |
Connect left plate cap to upper right contact on A socket with lead provided. |
| 2C34 | 1 |
5 | 6.3 | 50 |
30 | D | AMPL |
Connect right plate cap to upper right contact on A socket with lead provided. |
| 2C4 | 11 |
9 | 2.5 | 40 |
80 | H | RECT. STD. |
Tube strikes at approximately 60 on R when this control is rotated counterclockwise. See note D. |
| 2C45 | 2 |
10 | 7.5 | 62 |
30 | A | AMPL |
Mut.Cond.2200. |
| 2C53 | 9 |
5 | 6.3 | 0 |
0 | E | AMPL |
Connect plate cap to upper center contact on D socket with lead provided. OK over 900. See bote D. |
| 2D21 | 4 |
8 | 6.3 | 40 |
80 | K | RECT. STD. |
Good tube strikes between 25 and 30 on R when this control is rotated counterclockwise. Shorts on 2 and 3. See note D. |
| 2E22 | 12 |
1 | 6.3 | 71 |
0 | B | AMPL |
Mut.Cond.4000. See note A. |
| 2E25 | 8 |
5 | 6.3 | 67 |
0 | E | AMPL |
Mut.Cond.3000. Connect cap to upper right-hand contact of B socket with lead provided. |
| 2E5 | 12 |
2 | 2.5 | 0 |
0 | C | AMPL |
Eye closed. |
| 2E5 | 12 |
3 | 2.5 | 0 |
0 | C | AMPL |
Eye open. |
| 2G5 | 12 |
2 | 6.3 | 0 |
0 | C | AMPL |
Eye closed. |
| 2G5 | 12 |
3 | 6.3 | 0 |
0 | C | AMPL |
Eye open. |
| 2V3 | 7 |
1 | 2.5 | 0 |
0 | E | RECT. STD. |
OK over 500. See notes A and D. |
| 2W3 | 4 |
11 | 2.5 | 33 |
0 | E | RECT. STD. |
|
| 2X2 | 7 |
1 | 2.5 | 0 |
0 | A | RECT. STD. |
OK over 1000. See notes A and D. |
| 2X2A | 7 |
1 | 2.5 | 0 |
0 | A | RECT. STD. |
OK over 1000. See notes A and D. |
| 2Z2 | 2 |
7 | 2.5 | 35 |
0 | A | RECT. STD. |
See note D. |
| 30 | 2 |
10 | 2 | 43 |
30 | A | AMPL |
Mut.Cond.1025. |
| 30 | 2 |
10 | 2 | 36 |
33 | A | AMPL |
Mut.Cond.900. |
| 300B | 2 |
8 | 5 | 60 |
48 | A | AMPL |
Set MICROMHOS switch at 6000. OK over 1600. |
| 307A | 12 |
1 | 5 | 69 |
30 | B | AMPL |
See note A. |
| 31 | 2 |
10 | 2 | 35 |
53 | A | AMPL |
Mut.Cond.925. |
| 310A | 2 |
5 | 10 | 50 |
16 | C | AMPL |
|
| 310B | 2 |
5 | 10 | 44 |
20 | C | AMPL |
|
| 311A | 7 |
6 | 10 | 61 |
33 | B | AMPL |
|
| Important |
|
This I-177 data-base was created using data from I-177 beta 1.08 worksheet, from July 5, 2002.
A great compilation by Nolam E. Lee. |
|
Note A: The plate cap of the tube under test should be connected to the upper left
contact of the 6-pin (C) socket. A 12-inch lead with clip and bananna plug is provided for this purpose. |
|
Note B: Connect the plate cap (nearest the operator) to the upper left contact of the 6-pin (C) socket;
use the lead provided. Connect the grid lead to the remaining cap on the tube. |
|
Note C: Set the MICROMHOS switch at 6000 when testing this section if the tube tester bears either
Order No. 27613-Phila-44-52 or 52346-Phila-45-10 on the nomenclature plate. |
|
Note D: This test is only a partial indication of a good tube. A complete test is only possible
when using equipment. |
|
Note E: Do not tap on this tube when testing for short because damage to the tube may result. |
|
Note F: The Mutual Conductance values listed are averages for new tubes and only for a guide. |
Home
Technical Info
