Baxandall class D oscillator, can it produce a triangle like waveform?
in [Design]
|
Prev: Linear Algebra with Applications 8E Leon ISM is available for purchase at affordable prices. Contact me at allsolutionmanuals11[at]gmail.com to buy it today.
Next: interesting engine
From: John Fields on 24 Jul 2010 16:54 On Sun, 25 Jul 2010 04:39:32 +1000, Grant <omg(a)grrr.id.au> wrote: >As far as the topic goes, I'd still like to know what the triangle >wave is driving, 'cos I like to see some of the bigger picture shed >some light on the smaller details. --- He says it's pretty hush-hush, but since he's specified it as capacitive and fairly high-voltage, I'd guess a piezo ceramic, poled PVDF film, or some sort of varactor-like device.
From: Grant on 24 Jul 2010 18:58 On Sat, 24 Jul 2010 15:54:49 -0500, John Fields <jfields(a)austininstruments.com> wrote: >On Sun, 25 Jul 2010 04:39:32 +1000, Grant <omg(a)grrr.id.au> wrote: > >>As far as the topic goes, I'd still like to know what the triangle >>wave is driving, 'cos I like to see some of the bigger picture shed >>some light on the smaller details. > >--- >He says it's pretty hush-hush, but since he's specified it as >capacitive and fairly high-voltage, I'd guess a piezo ceramic, poled >PVDF film, or some sort of varactor-like device. Yeah, but you know how sometimes people ask for the wrong thing, it often helps to have a bigger slice of the picture. Like square voltage makes triangle current in inductor, square current a triangle voltage on capacitor. So one might generate a lovely triangle with the current resonating circuit with selected harmonics, only to have it all fall over when loaded. Grant.
From: Jim Thompson on 24 Jul 2010 19:03 On Sun, 25 Jul 2010 08:58:27 +1000, Grant <omg(a)grrr.id.au> wrote: >On Sat, 24 Jul 2010 15:54:49 -0500, John Fields <jfields(a)austininstruments.com> wrote: > >>On Sun, 25 Jul 2010 04:39:32 +1000, Grant <omg(a)grrr.id.au> wrote: >> >>>As far as the topic goes, I'd still like to know what the triangle >>>wave is driving, 'cos I like to see some of the bigger picture shed >>>some light on the smaller details. >> >>--- >>He says it's pretty hush-hush, but since he's specified it as >>capacitive and fairly high-voltage, I'd guess a piezo ceramic, poled >>PVDF film, or some sort of varactor-like device. > >Yeah, but you know how sometimes people ask for the wrong thing, it >often helps to have a bigger slice of the picture. > >Like square voltage makes triangle current in inductor, square >current a triangle voltage on capacitor. > >So one might generate a lovely triangle with the current resonating >circuit with selected harmonics, only to have it all fall over when >loaded. > >Grant. That's why I'm tiring of all these bloviator idealistic "solutions". Let's see a full-up REAL circuit with all the controls and power supplies working for more than one cycle. This is supposed to be a "design" group, is it not? ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Spice is like a sports car... Only as good as the person behind the wheel.
From: John Fields on 25 Jul 2010 03:12 On Sun, 25 Jul 2010 08:58:27 +1000, Grant <omg(a)grrr.id.au> wrote: >On Sat, 24 Jul 2010 15:54:49 -0500, John Fields <jfields(a)austininstruments.com> wrote: > >>On Sun, 25 Jul 2010 04:39:32 +1000, Grant <omg(a)grrr.id.au> wrote: >> >>>As far as the topic goes, I'd still like to know what the triangle >>>wave is driving, 'cos I like to see some of the bigger picture shed >>>some light on the smaller details. >> >>--- >>He says it's pretty hush-hush, but since he's specified it as >>capacitive and fairly high-voltage, I'd guess a piezo ceramic, poled >>PVDF film, or some sort of varactor-like device. > >Yeah, but you know how sometimes people ask for the wrong thing, it >often helps to have a bigger slice of the picture. > >Like square voltage makes triangle current in inductor, square >current a triangle voltage on capacitor. > >So one might generate a lovely triangle with the current resonating >circuit with selected harmonics, only to have it all fall over when >loaded. --- Agreed. JF
From: Tim Williams on 25 Jul 2010 04:38
"John Larkin" <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in message news:fmjn46d0kg7hemmke086s3d8clvimve115(a)4ax.com... > I didn't do Spice Then why repeat it? There is no shortage of posts, I can go anywhere in the thread and find the same data if I want it. It's not going anywhere, it's archived on Google in as many posts, for all the world to see. > As far as disregard, I post about like most people post. Ah, so rudeness isn't rudeness when everyone else is a cretin? Except me, apparently (except for the obvious rudeness of calling you out). > This is casual conversation, like shooting the bull at a bar > not like some city council meeting under Robert's Rules. So when "shooting the bull", you repeat all words that have been said up to that point? You must be dreary for conversation... > But you don't use LT Spice? It can be handy. Better, I use PaperSpice ;-) Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms |