Hi Tubbies -
I need a critique of my procedure using PSDII. Yellow_Light_Colorz_PDT_14 I like to “verify” software before I put any faith in it besides the possibility of GIGO on my part. For this program I ran a number of published circuits to compare program results with the circuit designer’s listed B+ voltage. Circuit examples included Gizmo 6T9, Angela EL34, MA’s SE KT88, PM’s 6B4G, etc. All the circuits used Hammond PSTs and I input their listed secondary voltage say 250 for a 250-0-250VAC and let PSDII estimate winding resistance, all the rectifiers are FW, the tube is an easy pick, the filters are mostly cap input followed by LC (I used Hammond’s listed choke resistance) or RC (I used the default 2ohm cap resistance for lack of any definitive data) the R resistance is a no-brainer, and used constant current load (of course it varies but I used the design load current or close to it). I ran a long simulation to be sure all calcs leveled out. Well the results were discouraging, Yellow_Light_Colorz_PDT_21 only one was close to the circuit designer’s listed B+. The rest were inconsistent, some higher, some lower, variance from 6% to 19%. Any ideas on what I may be doing wrong??
Thanks for your help,
Nuther Nuby hooked on tubes