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--- In LTspice@..., "analogspiceman" <analogspiceman@...> > You can more or less do this now if you know how, but it is a Well, I wouldn't go so far as to say "really bad", just

Thanks.. I usually count on only 40 db from differential stuff or 1% matching.. 0.1% is achievable with a lot of attention to layout When I get time I will read his postings in detail. It reinforces

Hi AG, You may want to read through a series of articles by Kendall see post# 30118 I know that he wrote a test suite for opamp models that tried to include PSRR / CMRR etc. I think this was about

Could someone let me know where I can find spice models for both 1N5811 and 1N6618? Thanks, Dan

Hello Steve, Apologies for the earlier comment. I found your files in Files>Temp>AD8336, but there was no announcement or indication from you that they were there. You schematic wouldn't run, but not

A suggested starting point is the following pdf. See: <http://www.edn.com/archives/1998/081798/pdf/17ms406.pdf> Howard

I know about time step control and its deviousness...! I think minimum time step size puts an u necessary computational burden when little or no activity is present.. it is better to have variable

Andy, Assuming your PIC puts out a PWM signal, the simplest way to do this is to use 4 voltage controlled switches (SW). The front ends of the switches can be configured to switch on and off as

Hello Rick and All, Well, it seems to be operating properly now, in that the "Skip" file shows up, though the .savebias command is still commented out in the log file. I spent several hours yesterday

I am in the process of designing a motor controller circuit. A PIC microcontroller will create/control a PWM signal which will be "inputted" to an H-bridge controller which will drive a brushed DC

Thanks.. Much obliged. Cheers A. Ganesan

You may want to look at Intersil's AN1556. See: <http://www.intersil.com/data/an/an1556.pdf> The author makes this claim about his method "Finally, Accurate SPICE Models I can Understand and Modify to

amhtech, I don't know what you mean by "PWM input bidirectional h-bridge driver model.", but most drivers sink and source current. The power switches normally have reverse diodes, so, in effct they

In the US these days it is chocolate cigars!!!!lol

Hello All, Wondering if anyone has a PWM input bidirectional h-bridge driver model for LTspice?

How on earth do you expect anyone to help you? You have not provided any files or a netlist to work with. By the way, your message says it is a warning, not an error - there is a difference. A warning

When I try to run AD8336-2.asc in FILES&#92;AD8336 I get an error message that contains "Circuit: * C:&#92;Program Files&#92;LTC&#92;AD models&#92;AD8336&#92;AD8336-2.asc WARNING: Node U1:U4_N24227 is

Hi George, Laplace transform for ramp in increasing values is (1/s). Yuo search we for this. Since we have decreasing function hence inverse of previous case, you get (s). since s is complex no. with