Hello,
I recently built the NYD one bottle as my first point-to-point (at least if perfboard counts) project, but ran into problems with the B+. The power supply I am using is a generic Apex 460 with the regulating diodes d5 and d6 cut out to give 286v B+ with nothing plugged in. When I run the power supply into the preamp this voltage drops like a brick to 102v. I used the attached schematic to assemble the pre. What might be causing this and what can I do to fix it? I am sure this is the result of some stupid simple elementary property. Please excuse my ignorance. Thank you!
I recently built the NYD one bottle as my first point-to-point (at least if perfboard counts) project, but ran into problems with the B+. The power supply I am using is a generic Apex 460 with the regulating diodes d5 and d6 cut out to give 286v B+ with nothing plugged in. When I run the power supply into the preamp this voltage drops like a brick to 102v. I used the attached schematic to assemble the pre. What might be causing this and what can I do to fix it? I am sure this is the result of some stupid simple elementary property. Please excuse my ignorance. Thank you!