Search found 13 matches

by ©
Fri Nov 29, 2013 11:25 am
Forum: Sim City
Topic: LTspice for the mac.... Yippee!
Replies: 1
Views: 6400

no need for alcohol

dave, i've been using the "stock" LTspice with CrossOver on mac for years. works like a charm and doesn't need wine, spirits or other bottles. and it makes upgrades to newer versions of LTspice easier than having to wait for a new bottle of wine. <http://www.codeweavers.com/products/crosso...
by ©
Thu Sep 26, 2013 9:09 pm
Forum: Sim City
Topic: Drop Down Menus for selecting your tube
Replies: 28
Views: 62175

6S4-A

hi stephie it would be super cool if you could add a 6S4-A model to the drop down list with the next update… i have found some models on the web, but they do not handle grid current. the GE datasheet shows a +4 volt curve, and morgan jones reports driving the tube into A2 (or was it AB2?) using a ...
by ©
Wed Jan 09, 2013 8:07 pm
Forum: Sim City
Topic: how to translate spice model to ltspice standard?
Replies: 4
Views: 12077

thanks!

giving the baby a name did the trick :-)

(silly me, shoulda come to this conclusion myself.)

thanks! ©
by ©
Wed Jan 09, 2013 11:20 am
Forum: Sim City
Topic: how to translate spice model to ltspice standard?
Replies: 4
Views: 12077

unknown subcircuit called in:

ray,

thanks for the files. i installed them as per your instructions and then added the ZVN0545G to a circuit (with the LT spice directive .inc..)

instead of a sim i get an error message: unknown subcircuit called in: xu1 n001 n005 out1 nmos

hmm... ?
by ©
Sat Jan 05, 2013 9:05 am
Forum: Sim City
Topic: how to translate spice model to ltspice standard?
Replies: 4
Views: 12077

how to translate spice model to ltspice standard?

hi all looks like i'm the first poster in 2013, so first of all a happy new year to you! i'd like to add the low capacitance ZVN0545 mosfet to my standard.mos library to simulate a source follower in a tube circuit. all i could find is a pspice model on Zetex' site: * *Zetex ZVN0545G Spice Model v1....
by ©
Fri Oct 12, 2012 5:19 pm
Forum: Sim City
Topic: red LED model
Replies: 3
Views: 9333

if only everything in life was as simple :-) THANKS! however, i question the accuracy of that model. i added two HLMP-6000 to bias my 6S45Ï€-spud today. with 188 Vdc B+ the bias with the two HLMP-6000 is 1.6xx volts. simming the same circuit with LT spice, i get a bias of 1.84 Vdc. (actually i wante...
by ©
Fri Oct 12, 2012 11:45 am
Forum: Sim City
Topic: red LED model
Replies: 3
Views: 9333

red LED model

i want to simulate bias with HLMP-6000 (aka standard red LED; used to be HP, then Agilent, now Avago, data sheet here: http://www.avagotech.com/docs/AV02-3609EN ). perusing the web i found the following model on http://www.groupdiy.com/index.php?topic=9121.0 : *Typ RED GaAs LED: Vf=1.7V Vr=4V If=40m...
by ©
Wed Nov 02, 2011 6:31 pm
Forum: Sim City
Topic: Drop down transformer models for LTSpice
Replies: 13
Views: 30623

got it right, thanks a lot! :D

what about stray (parallel) capacitance of the windings? i suppose i can't measure them directly... what are "typical" values for "normal" push-pull OPTs?

best, ©
by ©
Tue Nov 01, 2011 10:32 pm
Forum: Sim City
Topic: Drop down transformer models for LTSpice
Replies: 13
Views: 30623

hi stephie primary resistance is ~ 25 ohms from CT to end. let's assume L pri = 48 H (because it's nice to divide by 4...). do i use L = 12 H per winding in spice? and what value do i use for each of the two secondary windings that together form an 8 ohm winding -- L= 0.25 H each? (the CT of these t...
by ©
Sun Oct 30, 2011 5:23 pm
Forum: Sim City
Topic: Drop down transformer models for LTSpice
Replies: 13
Views: 30623

inductance values for PP OPT

i'd like to (crudely) sim a circuit with a 1k5:8 push-pull OPT. the secondary is center tapped and has a DCR of 0.26 ohm; LF -3db point is 4hz according to brian sowter who wound the transformer. what are "appropriate" values for the primary inductance? and is it correct that i have to div...
by ©
Tue Aug 30, 2011 4:16 pm
Forum: Sim City
Topic: 6BL8/ECF80 model needed
Replies: 2
Views: 5781

thank you VERY much - the two models work ferpectly!!

hope to see you at ETF.11

best, ©
by ©
Sat Aug 27, 2011 9:43 am
Forum: Sim City
Topic: 6BL8/ECF80 model needed
Replies: 2
Views: 5781

6BL8/ECF80 model needed

i'm looking for a triode- and a tetrode model of the 6BL8/ECF80/E80CF that works with LTspice. i have found several models on the web but none works with LTspice. thanks in advance for any help!!
by ©
Sun Nov 27, 2005 10:07 pm
Forum: sbench 101
Topic: LR Phono pre with Slagle iron
Replies: 14
Views: 23918

i'm fortunate enough to be able to compare steve's two LRs with slagle and sowter iron plus my own (built on steve's PCBs; using sowter sowter iron. my mods compared to steve's sowter version: pearl iso sockets for all four D3as, pearl tube coolers for the two input tubes [not enough room around the...