I usually have a couple of "voltage" things off to the side, making +5 and -5 or whatever, and have each opamp with little doglegs on its power pins, same net names.
Somewhere I thought I saw a circuit where the opamps were powered by little boxes with "+5" or something inside, with no other supply needed. Does that work? If so, how do you invoke it?
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Also can one power ICs from circuit outputs on spice? ISTR finding the IC model I was using had no power pins.
NT
PSpice has power symbols thus: +5V O---x
The "x" doesn't show, but it's the pin.
It netlists as:
V1 x 0 +5V
I tried to draw a circle in LTspice, but the drawing tool is the most obtuse POS I've ever seen.
In PSpice you choose Draw/Circle, click on the center point, then drag it out to the desired diameter. ...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 | |
| Voice:(480)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.
In LTspice, you're detrmining anchor points of a bounding box. You can choose whether these anchor points are visible or not under the 'view' menu.
RL
I know, but that method it difficult to align objects. ...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 | |
| Voice:(480)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.
Possibly makes more sense when the line connection can only resolve at rt angles on the grid and not to a center.
RL
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.