I'm going to the metal supply house on monday next week to try to hunt down some appropriate tubing, I pretty much have a simple method worked out for offset and extending rails as well
Could I just jumper RB and FB at the board or does there need to be another wire attached to the capsule backplate and connected to the PCB? I am asking this because I already have a Apex 460 with a microphone parts rk12 in it that I would like to use with your PCB and I am pretty sure the two backplates are not isolated. Thanks, Chris
Got Power Supply built. On voltage adjust the Bias will go down to -2.6 VDC but I can only got it up to 0VDC and I run out of turns. Small range. I have the 502 (5K) Bias trimmer placed correctly. Everything else OK.Any suggestions.
Hey Chung,unplugged mic, B+ wont go below 175V!? my bias doesn't move from 0 when turning down? Do you know of a simple reason for this? or did i get the B+ and bias trimmers backward? The Heater is at 6.30v perfect.