Article View: sci.electronics
Article #19284Re: 7805 regulator
From: Phil Ngai
Date: Fri, 17 Jun 1988 00:34
Date: Fri, 17 Jun 1988 00:34
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In article <5030002@hpvcla.HP.COM> johne@hpvcla.HP.COM (John Eaton) writes:
>< I have a question about the MC7805 5V 1A regulator. Can you parallel
>< two of these devices together to derive a higher current?
>In a word, NO. Unless they are extremely well matched then one will wind up
>with most of the load and the other will have very little. The best way is
I had a friend in college do this. I was skeptical but it worked fine.
What is the problem with one taking most of the load? They are over
current and temperature protected anyway.
>to use a 7805 for the regulation and an external power transistor for the
Now you don't have the protection that the 7805 has.
--
I speak for myself, not the company.
Phil Ngai, {ucbvax,decwrl,allegra}!amdcad!phil or phil@amd.com
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!ubvax!weitek!amdcad!phil From: phil@amdcad.AMD.COM (Phil Ngai) Newsgroups: sci.electronics Subject: Re: 7805 regulator Message-ID: <22117@amdcad.AMD.COM> Date: 17 Jun 88 00:34:05 GMT References: <592@picuxa.UUCP> <5030002@hpvcla.HP.COM> Reply-To: phil@amdcad.UUCP (Phil Ngai) Organization: Advanced Micro Devices Lines: 17