From: Bil Herd (bherd_at_ids-business.com)
Date: 2007-03-29 15:04:16
As long as the computer pulls a minimum of 200ma, and we didn't have good numbers on minimums back then, then the regulator would stay in regulation, a couple watts (if I remember correctly) at least were dissipated by the resistor rather than the regulator. It allowed them to used bent pieces of aluminum instead of anodized heat sinks, etc, and still be doing only half the heat. What I learned was that in the sake of making something cheap you really could make some intelligent guesses if you were careful about things like what the aggregated minimum will be. Regards, Bil -----Original Message----- From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of firstname.lastname@example.org Sent: Thursday, March 29, 2007 12:39 AM To: email@example.com Subject: RE: Blast from the past... Hallo Bil, > The question is: What does this part do? Why does it work? I think adding an extra 200 mA to the circuit because the 7805 was a bit underpowered for this board. -- ___ / __|__ / / |_/ Groetjes, Ruud \ \__|_\ \___| URL: Ruud.C64.org (Having my signatures back again :) De informatie in dit e-mailbericht is vertrouwelijk en uitsluitend bestemd voor de geadresseerde. Wanneer u dit bericht per abuis ontvangt, verzoeken wij u contact op te nemen met de afzender per kerende e-mail. Verder verzoeken wij u in dat geval dit e-mailbericht te vernietigen en de inhoud ervan aan niemand openbaar te maken. Wij aanvaarden geen aansprakelijkheid voor onjuiste, onvolledige dan wel ontijdige overbrenging van de inhoud van een verzonden e-mailbericht, noch voor daarbij overgebrachte virussen. Stichting Pensioenfonds ABP is gevestigd te Heerlen en ingeschreven bij de Kamer van Koophandel Zuid Limburg onder nummer: 41074000 The information contained in this e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. If you have received it in error, please contact the sender immediately by return e-mail; please delete in this case the e-mail and do not disclose its contents to any person. We don't accept liability for any errors, omissions, delays of receipt or viruses in the contents of this message which arise as a result of e-mail transmission. Stichting Pensioenfonds ABP, having its registered office at Heerlen, is registered in the Traderegister of the Chamber of Commerce Zuid Limburg (Maastricht), the Netherlands, registration number: 41074000 Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing list
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