{"id":8929,"date":"2020-10-23T14:42:45","date_gmt":"2020-10-23T13:42:45","guid":{"rendered":"https:\/\/www.bartola.co.uk\/valves\/?p=8929"},"modified":"2020-10-23T14:42:45","modified_gmt":"2020-10-23T13:42:45","slug":"el152-pentode-spice-model","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2020\/10\/23\/el152-pentode-spice-model\/","title":{"rendered":"EL152 Pentode Spice Model"},"content":{"rendered":"
\"\"<\/a>
EL152 Telefunken<\/figcaption><\/figure>\n

Some time ago I got hold of a nice stash of Telefunken EL152. These German pentodes are amazing. After playing with the RL12P35P and then obviously GU-50 (which is a copy of the LS-50), the EL152 was a nice valve to have at hand as it’s actually the LS-50 in a different bottle.<\/p>\n

The B-10V socket<\/a> is quite tricky as it seems like it was designed for the EL\/FL-152 and similar Telefunken valves. Anyhow, managed to get some new ceramic ones to trace the curves and generate a Spice model. Hope you find this useful.<\/p>\n

<\/p>\n

\"\"<\/a>
EL152 pentode curves<\/figcaption><\/figure>\n
\"\"<\/a>
EL152 triode curves<\/figcaption><\/figure>\n

Here’s the model using Derk’s tool:<\/p>\n

\"\"<\/a>
EL152 triode model<\/figcaption><\/figure>\n
\"\"<\/a>
EL-152 Pentode Model Vg2=250V<\/figcaption><\/figure>\n
\"\"<\/a>
EL-152 Pentode Model Screen Current (Ig2) @Vg2=250V<\/figcaption><\/figure>\n

LT Spice models<\/h2>\n

Pentode model is below and also here:\u00a0EL152-pentode-model<\/a>:<\/p>\n

****************************************************\n.SUBCKT EL152-pentode 1 2 3 4 ; A G2 G1 C;\n* \u00a0 \u00a0 \u00a0Extract V3.000\n* Model created: 23-Oct-2020\n*\n* Curves traced and Model developed by Alejandro Moglia\n* (c) 2020 by Bartola Ltd. UK\u00a0\n* For DIY Audio Use Only\n* www.bartola.co.uk\/valves email: valves@bartola.co.uk\n*\nX1 1 2 3 4 PenthodeD \u00a0MU= \u00a05.4 EX=1.390 kG1= 707.4 KP= \u00a032.3 kVB = \u00a05122.1 kG2=46214.5\n+ Ookg1mOokG2=.14E-02 Aokg1=.45E-06 alkg1palskg2=.14E-02 be= \u00a0 .07 als= 50.58 RGI=2000\n+ CCG1=10.0P \u00a0CCG2 = 0.0p CPG1 = 0.11p CG1G2 = 0.0p CCP=14.5P \u00a0;\n.ENDS\n\n****************************************************\n\n.SUBCKT PenthodeD 1 2 3 4; A G2 G1 C\n*\n* NOTE: LOG(x) is base e LOG or natural logarithm.\n* For some Spice versions, e.g. MicroCap, this has to be changed to LN(x).\n*\nRE1 \u00a07 0 \u00a01MEG \u00a0 \u00a0; DUMMY SO NODE 7 HAS 2 CONNECTIONS\nE1 7 0 VALUE=\n+{V(2,4)\/KP*LOG(1+EXP(KP*(1\/MU+V(3,4)\/SQRT(KVB+V(2,4)*V(2,4)))))}\nE2 \u00a0 8 0 VALUE = {Ookg1mOokG2 + Aokg1*V(1,4) - alkg1palskg2\/(1 + be*V(1,4))}\nG1 \u00a0 1 4 \u00a0VALUE = {0.5*(PWR(V(7),EX)+PWRS(V(7),EX))*V(8)}\nG2 \u00a0 2 4 VALUE = {0.5*(PWR(V(7),EX)+PWRS(V(7),EX))\/KG2 * (1+ als\/(1+be*V(1,4)))}\n\nRCP \u00a01 4 \u00a01G \u00a0 \u00a0 \u00a0; FOR CONVERGENCE A \u00a0- C\nC1 \u00a0 3 4 \u00a0{CCG1} \u00a0 ; CATHODE-GRID 1 C \u00a0- G1\nC4 \u00a0 2 4 \u00a0{CCG2} \u00a0 ; CATHODE-GRID 2 C \u00a0- G2\nC5 \u00a0 2 3 \u00a0{CG1G2} \u00a0 ; GRID 1 -GRID 2 G1 \u00a0- G2\nC2 \u00a0 1 3 \u00a0{CPG1} \u00a0; GRID 1-PLATE G1 - A\nC3 \u00a0 1 4 \u00a0{CCP} \u00a0 ; CATHODE-PLATE A \u00a0- C\nR1 \u00a0 3 5 \u00a0{RGI} \u00a0 ; FOR GRID CURRENT G1 - 5\nD3 \u00a0 5 4 \u00a0DX \u00a0 \u00a0 \u00a0; FOR GRID CURRENT 5 \u00a0- C\n.MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N)\n.ENDS PenthodeD<\/pre>\n
The triode model is below and also here:EL152-triode-model<\/a><\/div>\n
<\/div>\n
****************************************************\n.SUBCKT EL152-triode 1 2 3; A G C;\n* Extract V3.000\n* Model created: 23-Oct-2020\n*\n*\n* Curves traced and Model developed by Alejandro Moglia\n* (c) 2020 by Bartola Ltd. UK \n* For DIY Audio Use Only\n* www.bartola.co.uk\/valves email: valves@bartola.co.uk\n*\nX1 1 2 3 TriodeK MU= 5.43 EX=1.423 KG1= 707.4 KP= 32.3 KVB= 5122. RGI=2000\n+ CCG=0.0P CGP=0.0P CCP=0.0P ;\n.ENDS\n\n****************************************************\n.SUBCKT TriodeK 1 2 3; A G C\n*\n* NOTE: LOG(x) is base e LOG or natural logarithm.\n* For some Spice versions, e.g. MicroCap, this has to be changed to LN(x).\n*\nE1 7 0 VALUE=\n+{V(1,3)\/KP*LOG(1+EXP(KP*(1\/MU+V(2,3)\/SQRT(KVB+V(1,3)*V(1,3)))))}\nRE1 7 0 1G\nG1 1 3 VALUE={0.5*(PWR(V(7),EX)+PWRS(V(7),EX))\/KG1}\nRCP 1 3 1G ; TO AVOID FLOATING NODES IN MU-FOLLOWER\nC1 2 3 {CCG} ; CATHODE-GRID\nC2 2 1 {CGP} ; GRID-PLATE\nC3 1 3 {CCP} ; CATHODE-PLATE\nD3 5 3 DX ; FOR GRID CURRENT\nR1 2 5 {RGI} ; FOR GRID CURRENT\n.MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N)\n.ENDS TriodeK<\/pre>\n","protected":false},"excerpt":{"rendered":"
Some time ago I got hold of a nice stash of Telefunken EL152. These German pentodes are amazing. After playing with the RL12P35P and then obviously GU-50 (which is a copy of the LS-50), the EL152 was a nice valve to have at hand as it’s actually the LS-50 in a different bottle. The B-10V … Continue reading “EL152 Pentode Spice Model”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[24],"tags":[1380,1383,1382,1381,191,1384],"class_list":["post-8929","post","type-post","status-publish","format-standard","hentry","category-valve-curve-tracer","tag-el152","tag-el152-pentode","tag-el152-spice-model","tag-el152-tube","tag-gu-50","tag-ls-50"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-2k1","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/8929","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/comments?post=8929"}],"version-history":[{"count":1,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/8929\/revisions"}],"predecessor-version":[{"id":8938,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/8929\/revisions\/8938"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=8929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=8929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=8929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}