Article View: sci.electronics
Article #22393Re: low-current power supplies
From: Mark Zenier
Date: Fri, 23 Feb 1990 21:03
Date: Fri, 23 Feb 1990 21:03
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1199 bytes
In article <2588@scorn.sco.COM>, johnd@sco.COM (John DuBois) writes: > > I often have need of a low voltage (typically 12V or so), low current (up > to 20mA or so) DC power supply for some circuit. ... > My question is, is there a better way of doing this? Are there any > power supply chips that run directly off of 120VAC, and if so, what technique > do they use for voltage drop? ... > I'm not worried about the power supply output being hot; most of the > circuits would need to be hot anyway (AC load controllers). The main > considerations here are size and cost. Maxim makes some 8 pin minidip 120 vac to 5 Vdc power supply chips. Max610, 611, 612. Active has them in the catalog for $3.70 - $3.85. I think they use a capacitor as the dropping element. markz@ssc.uucp
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!uw-entropy!dataio!pilchuck!ssc!markz From: markz@ssc.UUCP (Mark Zenier) Newsgroups: sci.electronics Subject: Re: low-current power supplies Message-ID: <505@ssc.UUCP> Date: 23 Feb 90 21:03:27 GMT References: <2588@scorn.sco.COM> Distribution: usa Organization: SSC, Inc., Seattle, WA Lines: 20