Project BETA was initiated from an AX84 BBS thread calling for a simple two-tube push-pull design. The following documents outline my approach to the problem.
| Name | Size | Date Modified |
|---|---|---|
12DW7_sec2_curves.png
Various plate loads for low-mu section of 12DW7. |
101 kB | 11/29/09, 8:15:01 PM |
| AX84_4-4-0_Studio_081115_PSU.svg | 1007 kB | 11/28/09, 1:04:36 PM |
AX84_4-4-0_Studio_081115.pdf
I stole the PSU from this AX84 design for the third design exercise. |
399 kB | 11/28/09, 11:42:06 AM |
DetermineLineXfmrPrimaryZ.html
Some notes from Jim Doyle about how to determine the impedance of the 70V line transformer winding. |
1.1 kB | 12/1/09, 9:27:26 PM |
project_beta_000
First design exercise: step-up transformer coupling through cathode of second stage. |
13.8 kB | 11/14/09, 10:07:54 AM |
project_beta_001
Second design exercise: autotransformer coupling. |
14.3 kB | 11/17/09, 6:24:59 AM |
project_beta_002
Third design exercise: 6SN7 output, autotransformer coupling, negative feedback tone control in second stage cathode. This is probably the one I would prototype. |
55.4 kB | 2/4/17, 12:42:22 PM |
project_beta_003
Fourth design exercise: autotransformer coupling. Hm..., I really want to do something with that second winding on transformer. |
17.9 kB | 8/3/12, 6:41:57 AM |
Hammond-125C.pdf
Hammond 125C — Universal Push-Pull "Classic" Tube Output Transformer |
348 kB | 2/4/17, 12:42:10 PM |
RS_32_1031_33224.htm
70-Volt/100 Watt Line Transformer (320-1034) Features |
1.6 kB | 12/1/09, 9:46:26 PM |
RS_32_1031_33225.htm
70-Volt/100 Watt Line Transformer (320-1034) Connections |
1.9 kB | 12/1/09, 9:46:46 PM |
RS_32_1031_9662.pdf
70-Volt/100 Watt Line Transformer (320-1031) Instructions for Speaker Wiring |
290 kB | 12/1/09, 9:41:25 PM |
RS_32_1031_9663.htm
70-Volt/100 Watt Line Transformer (320-1031) Specifications |
2.6 kB | 12/1/09, 9:44:12 PM |
