quadrature to voltage converter

Aug 05, 2005 57 Replies

On Sun, 07 Aug 2005 21:14:06 GMT, Joerg wrote:

Now, if only there were a way of hooking an external program command to an LTSpice drop down menu item. Could hook this up so that the LTSpice filename is passed over, with the +c option, and that would automatically make it ready for pasting elsewhere and almost as convenient to use as possible.

Oh, just improved the +c option slightly. You can add a character to it and that character will appear at the beginning of each line in the paste buffer. I needed that for my Agent newsreader, which normally wraps the lines unless they are preceded by one of a few different characters. In my case, I'll probably use the colon (:) character, as in this example which uses a "speed up" RC in order to overcome Q2's capacitance when turning off and a diode D1 to help dump some of the excess charge on C1 also when turning off:

: PRIMARY SPECIFICATIONS : +12V +5V : .param Vbb=12V --------------------- | | : 2 supplies available, | | : .param Vcc=5V + the relay uses 10mA | | : @ 12V, ctrl is 0 to 5 --- --- : .param ILoad=10mA --------------------- - V1 - V2 : --- {Vbb} --- {Vcc} : - - : | | : DESIGN ESTIMATIONS | | : | | : .param Q1Vbe=0.6V Q1beta=200 gnd gnd : : .param Q2Vce=0.2V Q2Vbe=0.7V Q2beta=50 +12V +12V : | | +12V : .param IR2=0.1*Q2Ib | | | : | | | : --- D1 \\ | : / \\ 1N4148 / R2 | : DERIVATIVE CALCULATIONS --- \\ {R2} | : | / | : .param Q2Ic=ILoad Q2Ib=ILoad/Q2beta | | |e | | : | | | : | | \\ : RESISTOR VALUES | \\ / R3 : \\ / R5 \\ {RLoad} : .param RLoad=(Vbb-Q2Vce)/ILoad / R1 \\ 330 / : \\ {R1} / | : .param R2=Q2Vbe/IR2 / | | SIM : R4 | | | BUZZER : .param R1=(Vcc-Q1Vbe)/Q1Ie ,---/\\/\\----+---------' gnd : | 60 : | : --- : .tran 20u - V3 : --- PULSE(5 0 5u 10n 10n 5u 10u) : - : | : | : | : gnd

(V3+R4 simulate the micro's CMOS output pin.)

I think the colons look okay.

Jon

Hello Jon,

In my case it probably won't help. I tried to set lines breaks in all kinds of newsreaders and under various OSes. Looks great on screen and when I check the post they are often gone. Guess the server does that and this is beyond my control. The ISP "customer service" didn't have a clue but that was no surprise :-(

These days I have the impression some younger folks don't even know what a newsgroup is.

I was amazed that the MSP430 data sheet figures indicate around half that value, 30 ohms. Amazing. Still TI will not release hard data on that which precludes many applications such as driving switcher transistors.

They do. Could you make them sparkle around Christmas time?

Regards, Joerg

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Hello Jim,

Do they use an offshore call center where some kids reads the answers from an electronic loose leaf binder and if it ain't in there just say "it's not our responsibility"?

Regards, Joerg

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On Sun, 07 Aug 2005 21:17:20 GMT, Joerg wroth:

the

A smart "young engineer" will put a copy of LTspice on a thumb drive and hang the lanyard around his neck so that he'll never be without that most valuable resource. Smart young engineers of my day, 1950, wore slip-sticks in leather scabbards on their belts for the same reason. 8-)

Note the large glasses on my smiley, whippersnapper. 8-)

Jim

On Sun, 07 Aug 2005 21:42:19 GMT, Jonathan Kirwan wroth:

--------------lots of neat ASCII clipped---------------

Now all you have to do is to embed a script to automatically switch everybody's news reader over to a fixed character width font. A lot of "smart young engineers" don't know how to do that for themselves. 8-)

Jim

On Sun, 07 Aug 2005 22:24:15 GMT, Joerg wroth:

What was that animated, color enhanced, flashing stuff called that we used to use on the old dial-up BBS's? And whatever happened to the FIDO news groups?

Jim "Damn but I'm old." Meyer

Hello Jim,

And then the smart young engineer will see several armed security guards approaching while he is busy plugging a USB cable into the hotel PC.

In a few I'll trade the glasses against a glass of margarita 8-)

Regards, Joerg

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Hello Jim,

For some of us that would probably require a serious hack into the San Francisco Pacbell news server.

Regards, Joerg (who has line breaks set to 72...)

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Well, you can bring the horse to the water ....

Jon

That was just what's available under your VGA (two bytes each.) I think you may have needed to have ANSI.SYS loaded, though, as I believe that is how those features were accessed.

Jon "mercury delay line memory ancient" Kirwan

On Sun, 07 Aug 2005 21:42:19 +0000, Jonathan Kirwan wrote: ...

On my newsreader, they make the whole thing look like a quote.

Cheers! Rich

That's obvious. They go to googlegroups and think they're in a chatroom.

Thanks, Rich

Well, then, why don't you tell him to fix it? Duh.

Thanks, Rich

ANSI.

Well, when I look for groups with "fido." in the name, I get about 6 pages of them...

Cheers! Rich

On Mon, 08 Aug 2005 00:34:46 +0000, jmeyer wrote: ...

How many whippers would a whippersnapper snap If a whippersnapper could snap whippers?

Thanks, Rich ------ "A dolly in Dallas named Alice, Whose overworked sex is all callous, Wore the foreskin away On uncircumcised Ray, Through exuberance, tightness, and malice."

On Mon, 08 Aug 2005 00:54:45 GMT, Joerg wroth:

Most security guards can spot a geek. They know they're harmless and won't bother them.

Jim

That's about how my reader takes it, too. I can use either color (:) or greater-than sign (>) to designate quoted material and my reader does NOT follow wrapping rules for such material. Which, in the case of ASCII schematics, is a good thing I think.

Jon

Hello Jim,

I wouldn't be so sure, especially these days. Trying to load you own software onto a PC in a hotel or an Internet cafe can land you in hot water quite quickly. They don't like that and for good reason since they can be held liable if mischief is being started from their premises. It is highly unlikely that their staff knows what LTSpice is.

In one hotel I saw an explicit warning to that effect right above the screen.

Regards, Joerg

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