04-19-2012, 01:35 PM
I have finally finished rewinding the OT. Quite a task. The CT primary consists of 3900 turns of #37 in 26 layers. I took a gear drive out of my pellet stove that rotates at 2rpm. I mounted the core on a 3/4 x 3/4 wood shaft attached to the drive of the motor. Shaped two cams on the end of the wood shaft that actuated two micro switches. Took an old calculator and wired to the 1 and + terminals so with each rev it counted the turns for me. Took about 1 hr and 20 minutes per layer.
I have the OT back in the original metal and ready to mount it back on the speaker frame. The resistances of the primary and to the CT are within a few ohms of what the schematic says so I know I used the right size wire and number of turns. Am hopeful it works once I get it done. I need new glasses now.
I have the OT back in the original metal and ready to mount it back on the speaker frame. The resistances of the primary and to the CT are within a few ohms of what the schematic says so I know I used the right size wire and number of turns. Am hopeful it works once I get it done. I need new glasses now.
