I have only one 6ж52п which measures within specs:
Operating point in pentode:
- Ia=42.1mA @ Va=150V/Vs=150V
- gm=4.47mA/V
- Is=4.4mA
Triode curves:
Triode SPICE model:
And resulting SPICE model:
**** 6Z52P TRIODE ****************************************** * Created on 11/17/2013 19:25 using paint_kit.jar Version 2.4 Beta. May 2013 * Curve traced and model by Ale Moglia 2013 [email protected] * Curves image file: 6Z52P TRIODE * Data source link: www.bartola.co.uk/valves *---------------------------------------------------------------------------------- .SUBCKT TRIODE_6Z52P 1 2 3 ; Plate Grid Cathode + PARAMS: CCG=13.5P CGP=0.5P CCP=2P RGI=2000 + MU=76.5 KG1=34.7 KP=252 KVB=1272 VCT=-0.11 EX=1.39 * Vp_MAX=200 Ip_MAX=200 Vg_step=0.5 Vg_start=0 Vg_count=8 * Rp=4000 Vg_ac=55 P_max=11.2 Vg_qui=-48 * X_MIN=64 Y_MIN=48 X_SIZE=421 Y_SIZE=530 FSZ_X=995 FSZ_Y=675 XYGrid=false *---------------------------------------------------------------------------------- E1 7 0 VALUE={V(1,3)/KP*LOG(1+EXP(KP*(1/MU+(VCT+V(2,3))/SQRT(KVB+V(1,3)*V(1,3)))))} RE1 7 0 1G ; TO AVOID FLOATING NODES G1 1 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG1} RCP 1 3 1G ; TO AVOID FLOATING NODES C1 2 3 {CCG} ; CATHODE-GRID C2 2 1 {CGP} ; GRID=PLATE C3 1 3 {CCP} ; CATHODE-PLATE D3 5 3 DX ; POSITIVE GRID CURRENT R1 2 5 {RGI} ; POSITIVE GRID CURRENT .MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N) .ENDS *$