Join Date: Jul 2003
Location: Wayne, West Virginia
Originally Posted by ygg-it
Hello, I've found several models of 12AX7/ECC83 over internet.
Which is the most reliable you ever found? Can you please post here the best?
Don't know about the "best", but it's close...
* 12AX7A-mz LTSpice model
* Rydel model (5 parameters): mean fit error 0.0364781mA
* Traced by Wayne Clay on 10/01/2006 using Curve Captor v0.9.1
* from Mazda Belvu data sheet
.subckt 12AX7A-mz P G K
Bp P K I=((0.001162961073m)+(0.0001179305949m)*V(G,K))*uramp
+ ((89.27317344)*V(G,K)+V(P,K)+(50.06656412))**1.5 * V(P,K)/(V(P,K)+(1.191219264))
Cgk G K 2.3p ; 0.7p added (1.6p)
Cgp G P 2.3p ; 0.7p added (1.6p)
Cpk P K 0.53p ; 0.2p added (0.33p)
Rpk P K 1G ; to avoid floating nodes
d3 G K dx1
.model dx1 d(is=1n rs=2k cjo=1pf N=1.5 tt=1n)
Sent from my Linux desktop computer using a keyboard and a mouse.