John Larkin's LC oscillator
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From: Grant on 11 Jun 2010 18:07 On Fri, 11 Jun 2010 08:16:29 -0500, John Fields <jfields(a)austininstruments.com> wrote: >On Fri, 11 Jun 2010 07:02:03 -0500, John Fields ><jfields(a)austininstruments.com> wrote: > >>On 10 Jun 2010 13:23:55 -0700, Winfield Hill >><Winfield_member(a)newsguy.com> wrote: >> >> >>> In a ringing bell application, as the supply voltage sags, >>> and the amplitude drops, I imagine the circuit will move >>> from class C back to class A operation, before stopping. >> >>--- >>Why imagine? >> >>Here's a circuit list that'll show it all _and_ it'll create a .wav >>file, "bong.wav" in whatever folder the cicuit's in, so you can hear >>it. >> >>Enjoy! :-) > >--- >Oops... >Here it is: Sounds wonderful! There's so much I don't know about what LTSpice can do :( More examples that load and work as advertised, the better :) Grant. -- http://bugs.id.au/
From: BlindBaby on 11 Jun 2010 18:37 On Sat, 12 Jun 2010 08:07:41 +1000, Grant <omg(a)grrr.id.au> wrote: >On Fri, 11 Jun 2010 08:16:29 -0500, John Fields <jfields(a)austininstruments.com> wrote: > >>On Fri, 11 Jun 2010 07:02:03 -0500, John Fields >><jfields(a)austininstruments.com> wrote: >> >>>On 10 Jun 2010 13:23:55 -0700, Winfield Hill >>><Winfield_member(a)newsguy.com> wrote: >>> >>> >>>> In a ringing bell application, as the supply voltage sags, >>>> and the amplitude drops, I imagine the circuit will move >>>> from class C back to class A operation, before stopping. >>> >>>--- >>>Why imagine? >>> >>>Here's a circuit list that'll show it all _and_ it'll create a .wav >>>file, "bong.wav" in whatever folder the cicuit's in, so you can hear >>>it. >>> >>>Enjoy! :-) >> >>--- >>Oops... >>Here it is: > >Sounds wonderful! There's so much I don't know about what LTSpice >can do :( More examples that load and work as advertised, the better :) > >Grant. LTSpiceIV just came out today! http://www.linear.com/designtools/software/switchercad.jsp
From: John Larkin on 11 Jun 2010 19:02 On Fri, 11 Jun 2010 15:37:52 -0700, BlindBaby <BlindMelonChitlin(a)wellnevergetthatonethealbumcover.org> wrote: >On Sat, 12 Jun 2010 08:07:41 +1000, Grant <omg(a)grrr.id.au> wrote: > >>On Fri, 11 Jun 2010 08:16:29 -0500, John Fields <jfields(a)austininstruments.com> wrote: >> >>>On Fri, 11 Jun 2010 07:02:03 -0500, John Fields >>><jfields(a)austininstruments.com> wrote: >>> >>>>On 10 Jun 2010 13:23:55 -0700, Winfield Hill >>>><Winfield_member(a)newsguy.com> wrote: >>>> >>>> >>>>> In a ringing bell application, as the supply voltage sags, >>>>> and the amplitude drops, I imagine the circuit will move >>>>> from class C back to class A operation, before stopping. >>>> >>>>--- >>>>Why imagine? >>>> >>>>Here's a circuit list that'll show it all _and_ it'll create a .wav >>>>file, "bong.wav" in whatever folder the cicuit's in, so you can hear >>>>it. >>>> >>>>Enjoy! :-) >>> >>>--- >>>Oops... >>>Here it is: >> >>Sounds wonderful! There's so much I don't know about what LTSpice >>can do :( More examples that load and work as advertised, the better :) >> >>Grant. > > > LTSpiceIV just came out today! > >http://www.linear.com/designtools/software/switchercad.jsp I've been running 4.07 for a couple of weeks now. John
From: BlindBaby on 11 Jun 2010 19:07 On Fri, 11 Jun 2010 08:16:29 -0500, John Fields <jfields(a)austininstruments.com> wrote: >On Fri, 11 Jun 2010 07:02:03 -0500, John Fields ><jfields(a)austininstruments.com> wrote: > >>On 10 Jun 2010 13:23:55 -0700, Winfield Hill >><Winfield_member(a)newsguy.com> wrote: >> >> >>> In a ringing bell application, as the supply voltage sags, >>> and the amplitude drops, I imagine the circuit will move >>> from class C back to class A operation, before stopping. >> >>--- >>Why imagine? >> >>Here's a circuit list that'll show it all _and_ it'll create a .wav >>file, "bong.wav" in whatever folder the cicuit's in, so you can hear >>it. >> >>Enjoy! :-) > >--- >Oops... >Here it is: > >Version 4 >SHEET 1 936 680 >WIRE -384 48 -592 48 >WIRE -320 48 -384 48 >WIRE -112 48 -224 48 >WIRE 16 48 -112 48 >WIRE 112 48 16 48 >WIRE 16 64 16 48 >WIRE 112 64 112 48 >WIRE -384 96 -384 48 >WIRE -112 96 -112 48 >WIRE -448 144 -496 144 >WIRE 16 160 16 128 >WIRE 112 160 112 144 >WIRE 112 160 16 160 >WIRE -496 176 -496 144 >WIRE -592 192 -592 48 >WIRE -272 192 -272 112 >WIRE -272 192 -384 192 >WIRE 16 192 16 160 >WIRE -112 240 -112 176 >WIRE -48 240 -112 240 >WIRE -384 272 -384 192 >WIRE -272 272 -272 192 >WIRE -496 288 -496 256 >WIRE -112 304 -112 240 >WIRE 16 320 16 288 >WIRE 112 320 16 320 >WIRE 16 336 16 320 >WIRE 112 336 112 320 >WIRE -592 432 -592 272 >WIRE -496 432 -496 368 >WIRE -496 432 -592 432 >WIRE -384 432 -384 352 >WIRE -384 432 -496 432 >WIRE -272 432 -272 336 >WIRE -272 432 -384 432 >WIRE -112 432 -112 368 >WIRE -112 432 -272 432 >WIRE 16 432 16 416 >WIRE 16 432 -112 432 >WIRE 112 432 112 416 >WIRE 112 432 16 432 >WIRE -592 528 -592 432 >FLAG -592 528 0 >SYMBOL ind2 96 48 R0 >SYMATTR InstName L1 >SYMATTR Value 20e-3 >SYMATTR Type ind >SYMBOL ind2 96 432 M180 >WINDOW 0 36 80 Left 0 >WINDOW 3 36 40 Left 0 >SYMATTR InstName L2 >SYMATTR Value 500e-6 >SYMATTR Type ind >SYMATTR SpiceLine Rser=.01 >SYMBOL npn -48 192 R0 >SYMATTR InstName Q1 >SYMATTR Value 2N3904 >SYMBOL res -128 80 R0 >SYMATTR InstName R1 >SYMATTR Value 100k >SYMBOL cap 0 64 R0 >SYMATTR InstName C1 >SYMATTR Value 10e-6 >SYMBOL voltage -592 176 R0 >WINDOW 123 0 0 Left 0 >WINDOW 39 0 0 Left 0 >WINDOW 3 24 104 Invisible 0 >SYMATTR Value 5 >SYMATTR InstName V2 >SYMBOL pnp -448 192 M180 >SYMATTR InstName Q3 >SYMATTR Value 2N4403 >SYMBOL voltage -496 272 R0 >WINDOW 123 0 0 Left 0 >WINDOW 39 0 0 Left 0 >WINDOW 3 24 104 Invisible 0 >SYMATTR Value PULSE(5 0 0 1e-6 1e-6 .01) >SYMATTR InstName V1 >SYMBOL npn -320 112 R270 >SYMATTR InstName Q2 >SYMATTR Value 2N3904 >SYMBOL cap -288 272 R0 >SYMATTR InstName C4 >SYMATTR Value 1e-6 >SYMBOL res -400 256 R0 >SYMATTR InstName R2 >SYMATTR Value 100k >SYMBOL res -512 160 R0 >SYMATTR InstName R3 >SYMATTR Value 1000 >SYMBOL cap -128 304 R0 >SYMATTR InstName C2 >SYMATTR Value 1e-7 >SYMBOL res 0 320 R0 >SYMATTR InstName R4 >SYMATTR Value 750 >TEXT 32 184 Left 0 !K1 L1 L2 1 >TEXT -528 464 Left 0 !.tran 5 >TEXT -528 496 Left 0 !.wave .\\bong.wav 8 10000 N008 LT doesn't like all the SYMATTR use. It expects to only see it once.
From: BlindBaby on 11 Jun 2010 19:09
On Fri, 11 Jun 2010 16:02:58 -0700, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >On Fri, 11 Jun 2010 15:37:52 -0700, BlindBaby ><BlindMelonChitlin(a)wellnevergetthatonethealbumcover.org> wrote: > >>On Sat, 12 Jun 2010 08:07:41 +1000, Grant <omg(a)grrr.id.au> wrote: >> >>>On Fri, 11 Jun 2010 08:16:29 -0500, John Fields <jfields(a)austininstruments.com> wrote: >>> >>>>On Fri, 11 Jun 2010 07:02:03 -0500, John Fields >>>><jfields(a)austininstruments.com> wrote: >>>> >>>>>On 10 Jun 2010 13:23:55 -0700, Winfield Hill >>>>><Winfield_member(a)newsguy.com> wrote: >>>>> >>>>> >>>>>> In a ringing bell application, as the supply voltage sags, >>>>>> and the amplitude drops, I imagine the circuit will move >>>>>> from class C back to class A operation, before stopping. >>>>> >>>>>--- >>>>>Why imagine? >>>>> >>>>>Here's a circuit list that'll show it all _and_ it'll create a .wav >>>>>file, "bong.wav" in whatever folder the cicuit's in, so you can hear >>>>>it. >>>>> >>>>>Enjoy! :-) >>>> >>>>--- >>>>Oops... >>>>Here it is: >>> >>>Sounds wonderful! There's so much I don't know about what LTSpice >>>can do :( More examples that load and work as advertised, the better :) >>> >>>Grant. >> >> >> LTSpiceIV just came out today! >> >>http://www.linear.com/designtools/software/switchercad.jsp > > >I've been running 4.07 for a couple of weeks now. > >John 4.07z just came out today. Damn. |