Home |
Search |
Today's Posts |
|
Electronic Schematics (alt.binaries.schematics.electronic) A place to show and share your electronics schematic drawings. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.basics
|
|||
|
|||
Voltage-Controlled Capacitor Spice Model now on my website
Voltage-Controlled Capacitor Spice Model now on my website.
See VControlledCap.zip on the Device Models & Subcircuits Page. Includes Library File (.LIB), LTspice Symbol (.ASY), and a JPEG showing how it was developed. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#2
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.basics
|
|||
|
|||
Voltage-Controlled Capacitor Spice Model now on my website
On Wed, 18 Mar 2015 09:28:57 -0700, Jim Thompson
wrote: Voltage-Controlled Capacitor Spice Model now on my website. See VControlledCap.zip on the Device Models & Subcircuits Page. Includes Library File (.LIB), LTspice Symbol (.ASY), and a JPEG showing how it was developed. ...Jim Thompson I don't have time to play with this just now, but one quick question: Given that C is a variable capacitor, set C to 1F and charge it to 1 volt. Now change C to 0.5F. What is the new voltage? -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com |
#3
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.basics
|
|||
|
|||
Voltage-Controlled Capacitor Spice Model now on my website
On Wed, 18 Mar 2015 10:30:44 -0700, John Larkin wrote:
On Wed, 18 Mar 2015 09:28:57 -0700, Jim Thompson wrote: Voltage-Controlled Capacitor Spice Model now on my website. See VControlledCap.zip on the Device Models & Subcircuits Page. Includes Library File (.LIB), LTspice Symbol (.ASY), and a JPEG showing how it was developed. ...Jim Thompson I don't have time to play with this just now, but one quick question: Given that C is a variable capacitor, set C to 1F and charge it to 1 volt. Now change C to 0.5F. What is the new voltage? How many 1 farad capacitors are you aware of? Oh and would not a 1F charged cap dump into a 0.5F cap and fully charge it? If that answer is yes, then the voltage would be the same... slightly less even, all elements considered. You thought it would morph the EMF into something else? |
#4
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.basics
|
|||
|
|||
Voltage-Controlled Capacitor Spice Model now on my website
On Wed, 18 Mar 2015 17:40:06 +0000 (UTC), DecadentLinuxUserNumeroUno
wrote: On Wed, 18 Mar 2015 10:30:44 -0700, John Larkin wrote: On Wed, 18 Mar 2015 09:28:57 -0700, Jim Thompson wrote: Voltage-Controlled Capacitor Spice Model now on my website. See VControlledCap.zip on the Device Models & Subcircuits Page. Includes Library File (.LIB), LTspice Symbol (.ASY), and a JPEG showing how it was developed. ...Jim Thompson I don't have time to play with this just now, but one quick question: Given that C is a variable capacitor, set C to 1F and charge it to 1 volt. Now change C to 0.5F. What is the new voltage? How many 1 farad capacitors are you aware of? In LT Spice, you can use any C value. 1F is the generic capacitor. I usually normalize theoretical circuits to 1F, 1H, 1 ohm. [1] In real life, Digikey will sell you 1F caps. Or 5000F caps. But not variable 1F caps. Oh and would not a 1F charged cap dump into a 0.5F cap and fully charge it? If that answer is yes, then the voltage would be the same... slightly less even, all elements considered. You thought it would morph the EMF into something else? I'd like to know if Jim's model conserves charge, or conserves energy, or conserves voltage. Or whatever it does. [1] I do find myself picking standard values, like 39nF instead of 40 nF, and worrying about leakage and stray capacitance and power dissipation, when none of these matter in Spice. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com |
#5
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.basics
|
|||
|
|||
Voltage-Controlled Capacitor Spice Model now on my website
On Wed, 18 Mar 2015 10:30:44 -0700, John Larkin
wrote: On Wed, 18 Mar 2015 09:28:57 -0700, Jim Thompson wrote: Voltage-Controlled Capacitor Spice Model now on my website. See VControlledCap.zip on the Device Models & Subcircuits Page. Includes Library File (.LIB), LTspice Symbol (.ASY), and a JPEG showing how it was developed. ...Jim Thompson I don't have time to play with this just now, but one quick question: Given that C is a variable capacitor, set C to 1F and charge it to 1 volt. Now change C to 0.5F. What is the new voltage? I haven't tried that. Since it _is_ a capacitor, it'll depend on whether a simulator treats capacitors as charge-controlled devices or otherwise. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#6
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.basics
|
|||
|
|||
Voltage-Controlled Resistor Spice Model Updated
Voltage-Controlled Resistor Spice Model Updated
See VVR.zip on the Device Models & Subcircuits Page of my website Includes Library File (.LIB), LTspice Symbol (.ASY), PSpice Symbol (.SYM)and a JPEG showing how it was developed. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#7
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.basics
|
|||
|
|||
Voltage-Controlled Capacitor Spice Model now on my website
On 2015-03-18, DecadentLinuxUserNumeroUno wrote:
On Wed, 18 Mar 2015 10:30:44 -0700, John Larkin wrote: On Wed, 18 Mar 2015 09:28:57 -0700, Jim Thompson wrote: Voltage-Controlled Capacitor Spice Model now on my website. See VControlledCap.zip on the Device Models & Subcircuits Page. Includes Library File (.LIB), LTspice Symbol (.ASY), and a JPEG showing how it was developed. ...Jim Thompson I don't have time to play with this just now, but one quick question: Given that C is a variable capacitor, set C to 1F and charge it to 1 volt. Now change C to 0.5F. What is the new voltage? How many 1 farad capacitors are you aware of? I've seen maybe 10 or 20 examples for sale retail. seen adverts for more. Oh and would not a 1F charged cap dump into a 0.5F cap and fully charge it? If that answer is yes, then the voltage would be the same... slightly less even, all elements considered. "change", not "charge" You thought it would morph the EMF into something else? conservation of matter and all that. -- umop apisdn |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Spice Model for ADI 500MHz Four-Quadrant Multiplier Added to my Website | Electronic Schematics | |||
ANN: New Spice Models added to my website | Electronic Schematics | |||
New 555 Spice Model | Electronic Schematics | |||
Voltage controlled oscillator question - VCO 001.pdf (1/1) | Electronic Schematics | |||
Voltage controlled tone | Electronics |