From: Bob Blick <bobblick@outlook.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
Sender: "piclist-bounces@mit.edu" <piclist-bounces@mit.edu>
Date: Sat, 22 Feb 2020 13:10:08 -0800
Subject: Re: [EE] Simulating a push pull converter
Thread-Topic: [EE] Simulating a push pull converter
Thread-Index: AQHV6WJE7ELPc10takmLL0RJUiYW1KgndlzZgAAKCICAADP7rw==
Message-ID:
 <SN6PR02MB40646A2DF81D15CAF46EE2B0DCEE0@SN6PR02MB4064.namprd02.prod.outlook.com>
References:
 <CAHFNz9K2LbpKhdrxBC16G0F=6cDwnnOSwGfgwTpuzCckWv1pqQ@mail.gmail.com>
	<BYAPR02MB4055FC1FA85B8F331C524C8EDCEE0@BYAPR02MB4055.namprd02.prod.outlook.com>,
	<CAHFNz9Kx2FuW6JH=NSfBjiE46GYAC6UMdSae+kdiSe9P0TmsWQ@mail.gmail.com>
In-Reply-To:
 <CAHFNz9Kx2FuW6JH=NSfBjiE46GYAC6UMdSae+kdiSe9P0TmsWQ@mail.gmail.com>
Reply-To: Microcontroller discussion list - Public. <piclist@mit.edu>
Accept-Language: en-US
Content-Language: en-US
X-MS-Exchange-Organization-SenderIdResult: TempError
X-MS-Exchange-Organization-PRD: mit.edu
X-MS-TNEF-Correlator:
acceptlanguage: en-US
received-spf: Pass (protection.outlook.com: domain of outlook.com designates
	40.92.40.20 as permitted sender) receiver=protection.outlook.com;
	client-ip=40.92.40.20;	helo=NAM10-BN7-obe.outbound.protection.outlook.com; 
dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outlook.com;
	s=selector1;
	h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;
	bh=NkYNvAwz/+8+nKcxXfchd+vTGRgEmemEuVyBl3BV0dk=;
	b=j3ZzXlN58t+nblNn7RHpr1wc5mD1/ziVnddG446XlTjAxGQpfdbJPmuatB6G95ORMJ7y/zLbm+wcUi0pusl04O1sGUrVhMIdY93ThSoRPsQgycaHsoWYGh7IJgDYaZnFt4YJywPtTLGwsu9IbQoZM3zGTIJiv46Zk+ZgKo/Mzf3iBF42ZQibp60pg7lyMg5xjb79XoB+/++gbdjgNWHuY9pspi4QJ0AmYesmBTxgid+WgqoB7CSseWVGqcXTeYFPySiJgelO9u0OpjgQYQXfpZFzwOC9S2I2TTh9saIEOoiTQkF/VO6ryn5hzoeMbVhygMLUsusquxLCxdAGLw+T3g==
authentication-results: spf=pass (sender IP is 40.92.40.20)
	smtp.mailfrom=outlook.com; mit.edu; dkim=pass (signature was verified)
	header.d=outlook.com;mit.edu; dmarc=pass action=none
	header.from=outlook.com;compauth=pass reason=100
errors-to: piclist-bounces@mit.edu
list-id: "Microcontroller discussion list - Public." <piclist.mit.edu>
list-post: <mailto:piclist@mit.edu>
x-beenthere: piclist@mit.edu
x-mailman-version: 2.1.6
x-topics: [EE]
x-mime-autoconverted: from quoted-printable to 8bit by PCH.mit.edu id
	01MLAF9A021047
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0

Hi Manu,
I've never used a transformer in LTSpice, but I'm sure it does support all =
the relevant parameters. Although it all depends on the model you are using=
 whether or not it includes what you need. The generic models usually are p=
retty bare-bones.
Cheerful regards, Bob

________________________________________
From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of Manu A=
braham=20
Sent: Saturday, February 22, 2020 9:57 AM
To: Microcontroller discussion list - Public.
Subject: Re: [EE] Simulating a push pull converter

Greetings Bob,

Adding in Rise and Fall time improved the symmetricity of the
waveform, though negligible, but there still exists a small difference
-421V vs 431V.
If it were a practical scenario, it could be assumed that it were the
magnetization current. But does LTSpice know about magnetization
current in this situation ?

Cheers,

Manu

On Sat, Feb 22, 2020 at 10:54 PM Bob Blick wrote:
>
> Greetings Manu,
>
> LTSpice always needs to have a rise and fall time specified for all pulse=
 sources. Make them some tiny value, say 0.01u and everything works fine.
>
> Cheerful regards, Bob
>
> ________________________________________
> From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of Manu=
 Abraham=20
> Sent: Saturday, February 22, 2020 1:17 AM
> To: Microcontroller discussion list - Public.
> Subject: [EE] Simulating a push pull converter
>
> Hi,
>
> Simulating a push pull converter in LTSpice, I get an asymmetric output s=
wing.
>
> Any thoughts, why the swing is asymmetric ?
>
> Thanks,
> Manu
>
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.