John Larkin's LC oscillator
in [Design]
|
Prev: Skybuck's Universal Code Version 6 (The Fast Version)
Next: CCt to converter 24Vdc signals to 12Vdc signals
From: Grant on 12 Jun 2010 20:19 On Sat, 12 Jun 2010 08:07:04 -0700, Archimedes' Lever <OneBigLever(a)InfiniteSeries.Org> wrote: >On Sat, 12 Jun 2010 20:31:02 +1000, Grant <omg(a)grrr.id.au> wrote: > .... >> >>Mine updated itself a while back, just checked --> 4.07. >> >>Grant. > > 4.07 what. > > Mine is 4.07z > > They do auto-update, but not on every run. So, you may still have the >one you loaded originally. Yes, it was 4.07v, now it's 4.07z, after seeing 'z' was available here and doing a manual update :) Grant. -- http://bugs.id.au/
From: BlindBaby on 12 Jun 2010 20:22 On Sat, 12 Jun 2010 18:45:44 -0500, John Fields <jfields(a)austininstruments.com> wrote: >>And if you play with >>the base bias resistor, you can make something that looks fairly >>chaotic, sort of ratty like a superregen. > >--- >Well, of course you can. > >So what? That is John, 'squegging' on the group.
From: Archimedes' Lever on 12 Jun 2010 20:26 On Sun, 13 Jun 2010 10:19:06 +1000, Grant <omg(a)grrr.id.au> wrote: >On Sat, 12 Jun 2010 08:07:04 -0700, Archimedes' Lever <OneBigLever(a)InfiniteSeries.Org> wrote: > >>On Sat, 12 Jun 2010 20:31:02 +1000, Grant <omg(a)grrr.id.au> wrote: >> >... >>> >>>Mine updated itself a while back, just checked --> 4.07. >>> >>>Grant. >> >> 4.07 what. >> >> Mine is 4.07z >> >> They do auto-update, but not on every run. So, you may still have the >>one you loaded originally. > >Yes, it was 4.07v, now it's 4.07z, after seeing 'z' was available here >and doing a manual update :) > >Grant. Yeah.. Now tell krw just how stupid he is. Oh, wait... you just did that! Bwuahahahahahhaa!
From: krw on 12 Jun 2010 20:57 On Sat, 12 Jun 2010 17:26:11 -0700, Archimedes' Lever <OneBigLever(a)InfiniteSeries.Org> wrote: >On Sun, 13 Jun 2010 10:19:06 +1000, Grant <omg(a)grrr.id.au> wrote: > >>On Sat, 12 Jun 2010 08:07:04 -0700, Archimedes' Lever <OneBigLever(a)InfiniteSeries.Org> wrote: >> >>>On Sat, 12 Jun 2010 20:31:02 +1000, Grant <omg(a)grrr.id.au> wrote: >>> >>... >>>> >>>>Mine updated itself a while back, just checked --> 4.07. >>>> >>>>Grant. >>> >>> 4.07 what. >>> >>> Mine is 4.07z >>> >>> They do auto-update, but not on every run. So, you may still have the >>>one you loaded originally. >> >>Yes, it was 4.07v, now it's 4.07z, after seeing 'z' was available here >>and doing a manual update :) >> >>Grant. > > Yeah.. Now tell krw just how stupid he is. Oh, wait... you just did >that! You're a lair as well as being wrong, AlwaysWrong. Always. > Bwuahahahahahhaa! You are pitiful, not funny.
From: YD on 13 Jun 2010 00:28
Late at night, by candle light, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> penned this immortal opus: >On Sat, 12 Jun 2010 19:38:42 -0300, YD <ydtechHAT(a)techie.com> wrote: > >>Late at night, by candle light, John Larkin >><jjlarkin(a)highNOTlandTHIStechnologyPART.com> penned this immortal >>opus: >> >>>On Sat, 12 Jun 2010 08:53:20 +0100, John Devereux >>><john(a)devereux.me.uk> wrote: >>> >>>>John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> writes: >>>> >>>>> On Fri, 11 Jun 2010 17:43:39 -0300, YD <ydtechHAT(a)techie.com> wrote: >>>>> >>>>>>Late at night, by candle light, John Larkin >>>>>><jjlarkin(a)highNOTlandTHIStechnologyPART.com> penned this immortal >>>>>>opus: >>>> >>>>[...] >>>> >>>>> >>>>> That's nice. It's running pretty hard class C. >>>>> >>>>> Try this: >>>>> >>>>> C2 = 10 uF >>>>> L2 = 0.25 uH >>>>> >>>>> That will move it to class A, with about 50 millivolts p-p drive at >>>>> the emitter. That's more like what I had in mind originally. Vb is >>>>> stiff at about +0.6, and Vc dips down to about -0.1, a little below >>>>> Ve, sucking a brief blip of current out of the base cap. The sine wave >>>>> is just slightly flattened on the bottom. >>>>> >>>>> It's useful to add a small resistor, like 1 milliohm, in the emitter >>>>> so that you can probe the current. It's interesting. >>>> >>>>Hi John, >>>> >>>>You don't need to add the the resistor. You can just measure the emitter >>>>current by clicking on it! >>>> >>> >>>I couldn't get that to work. Maybe my aim isn't good enough. >>> >>>John >>> >> >>Just hover the pointer over the terminal until it looks like a >>clampmeter. One of those things I found quite by accident, and nicely >>surprised. >> > >I know that, but I had a hard time hitting the emitter current. The >resistor is a bigger target. Maybe I should buy more pixels or >something. > >John Yeah, the "sensitive" area is quite small, apparently only a few pixels across. Another way is to use a 0 V source instead of the resistor, then you can be sure of polarity too. I recall doing that in some ancient SPICE from the DOS daze. - YD. -- Remove HAT if replying by mail. |