simulate 6146B beam tetrode tube

[ket]

Can any one help me, how can i simulate 6146B tetrode tube. Folllowing is the spice model for the tube i found on net.

*-----------------------------------------------------------------------
* Filename:        6146s.inc  13/8/97
* Simulator:        SPICE 3f4
* Device type:        RF beam tetrode
* Device model:        6146
*
* Author:        Duncan Munro
* Date:            13/8/97
* Copyright:        (C)1997-2000 Duncan Amplification
*
* The following parameters are not modelled:
*
*   (1) Heater
*
* Please note that this model is provided "as is" and
* no warranty is provided in respect of its suitability
* for any application.
*
* This model is provided for educational and non-profit use.
*
* Email queries to postmaster@duncanamps.com
*
* Pins   A  Anode
*        S  Screen
*        G  Grid
*        K  Cathode
*
*-----------------------------------------------------------------------

.SUBCKT 6146 A S G K
*
* Calculate contribution to cathode current
*
Bat    at  0    V=0.636*ATAN(V(A,K)/10)
Bme    me  0   V=URAMP(V(A,K)/130)
Bmup    mup 0    V=1-(URAMP(V(K,G)-30)/2000)
Bmu     mu  0    V=V(G,K)*V(mup)
Bgs    gs  0    V=URAMP(V(S,K)*4.5+V(mu)*19+URAMP(V(A,K))/10)
Bgs2    gs2 0    V=(V(gs)^1.5)*16E-6
Bsd    sd  0    V=URAMP(V(gs2)*V(at)-v(me))
Bcath    cc  0    V=V(gs2)*V(at) - V(sd)
*
* Calculate anode current
*
Ba    A   K    I=V(cc)
*
* Calculate screen current
*
Bscrn    sc  0    V=2.5E-4*(V(S,K)^1.5)*V(gs2)*(1.1-V(at))+V(sd)
Bs    S   K    I=V(sc)
*
* Grid current
*
*Bg    G   K    I=(URAMP(V(G,K)+1)^1.5)*(1.25-V(at))*870E-6
*
* Capacitances
*
Cg1    G    K    13.0p
Cak    A    K    8.5p
Cg1a    G    A    0.24p

.ENDS

DATASHEET : http://www.nj7p.org/Tube4.php?tube=6146B

thankyou,

ketan

[Tayyab_R]

Hi Ket,

           In order to be able to simulate using the spice model you have, you will need to create a custom component for your tube. Below is the link which will guide you through creating a custom component in multisim. Just follow the procedure and you should be able to simulate.

http://zone.ni.com/devzone/cda/tut/p/id/3173

Hope this helps.

Regards,

[ket · Accepted solution]

thankyou for the prompt response. What footprint should i choose/set?

[LeilaFeyz]

Hi Ket,

You can find similar component in the database and use its footprint to edit it according to 6146B datasheet.

Regards,

Leila F.

National Instruments