{"id":1351,"date":"2013-03-16T19:44:16","date_gmt":"2013-03-16T19:44:16","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=1351"},"modified":"2013-03-16T19:45:30","modified_gmt":"2013-03-16T19:45:30","slug":"864-vt-24-dht-curves","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/16\/864-vt-24-dht-curves\/","title":{"rendered":"864 \/ VT-24 DHT curves"},"content":{"rendered":"

\"IMG_0336\"<\/a>This is one of the other great DHTs I received from Vegard Winge<\/a> for tracing.<\/p>\n

Here are the curves and the\u00a0SPICE model:\u00a0864 DHT Composite<\/a><\/p>\n

\"864<\/a> \"864<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

The SPICE composite model based on Dmitry’s:<\/p>\n

**** 864 VT-24 DHT Composite ******************************************\r\n* Created on 03\/16\/2013 19:30 using paint_kit.jar \r\n* www.bartola.co.uk\/valves\r\n* Curves image file: 864 SMALL.jpg\r\n* Data source link: 864 SMALL.jpg\r\n* Created by Ale Moglia valves@bartola.co.uk\r\n*----------------------------------------------------------------------------------\r\n.SUBCKT TRIODE_864-Composite 1 2 3 4 ; Plate Grid K1 K2\r\n+ PARAMS: CCG=2.3P CGP=5.3P CCP=1.3P \r\n+ MU=7.14 KG1=13560 KP=98 \r\n+ KVB=1.88 VCT=-0.07 EX=1.41 RGI=2000\r\n* Vp_MAX=200 Ip_MAX=0.008 \r\n* Vg_step=2 Vg_start=0 Vg_count=11\r\n* END PARAMS -----------------------------------------------------------------------\r\n* cathode resistor is 4.4 ohm, the pins K1 and K2 are 1.1 ohms from the ends of it\r\nRFIL_LEFT 3 31 1.1\r\nRFIL_RIGHT 4 41 1.1\r\nRFIL_MIDDLE 31 41 2.2\r\nE11 32 0 VALUE={V(1,31)\/KP*LOG(1+EXP(KP*(1\/MU+V(2,31)\/SQRT(KVB+V(1,31)*V(1,31)))))}\r\nE12 42 0 VALUE={V(1,41)\/KP*LOG(1+EXP(KP*(1\/MU+V(2,41)\/SQRT(KVB+V(1,41)*V(1,41)))))}\r\nRE11 32 0 1G\r\nRE12 42 0 1G\r\nG11 1 31 VALUE={(PWR(V(32),EX)+PWRS(V(32),EX))\/(2*KG1)}\r\nG12 1 41 VALUE={(PWR(V(42),EX)+PWRS(V(42),EX))\/(2*KG1)}\r\nRCP1 1 3 1G\r\nRCP2 1 4 1G\r\nC1 2 3 {CCG} ; CATHODE-GRID\r\nC2 2 1 {CGP} ; GRID=PLATE\r\nC3 1 3 {CCP} ; CATHODE-PLATE\r\nD3 5 3 DX ; FOR GRID CURRENT\r\nD4 6 4 DX ; FOR GRID CURRENT\r\nRG1 2 5 {RGI} ; FOR GRID CURRENT\r\nRG2 2 6 {RGI} ; FOR GRID CURRENT\r\n.MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N)\r\n.ENDS\r\n*$<\/pre>\n
 <\/p>\n
Hope this is useful…<\/p>\n
Ale<\/p>\n","protected":false},"excerpt":{"rendered":"
This is one of the other great DHTs I received from Vegard Winge for tracing. Here are the curves and the\u00a0SPICE model:\u00a0864 DHT Composite     The SPICE composite model based on Dmitry’s: **** 864 VT-24 DHT Composite ****************************************** * Created on 03\/16\/2013 19:30 using paint_kit.jar * www.bartola.co.uk\/valves * Curves image file: 864 SMALL.jpg * … Continue reading “864 \/ VT-24 DHT curves”<\/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":[12,67,24,5],"tags":[359,357,356,355,358],"class_list":["post-1351","post","type-post","status-publish","format-standard","hentry","category-dht-valves","category-thd","category-valve-curve-tracer","category-valves","tag-864-curves","tag-864-spice-model","tag-864-triode-model","tag-864-tube","tag-vt-24-curves"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-lN","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1351","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=1351"}],"version-history":[{"count":3,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1351\/revisions"}],"predecessor-version":[{"id":1359,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1351\/revisions\/1359"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=1351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=1351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=1351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}