With a single 1N4007 and a capacitor you will have a filtered 1/2wave rectifier. It should charge to .9 time the 24V. That should be OK.
You could use 4 1N4007s in a bridge and not use the capacitor. Bob Macklin K5MYJ Seattle, Wa, "Real Radios Glow in the Dark" ----- Original Message ----- From: "JT Croteau" <[EMAIL PROTECTED]> To: "Discussion of AM Radio in the Amateur Service" <[email protected]> Sent: Thursday, February 14, 2008 7:55 PM Subject: Re: [AMRadio] Cap Substitution > Nope Bob, this guy definitely only had three 1N2069's in parallel - > two cathodes to one anode connected directly to a 6.3V tranny. > > I'm not looking to put it back the way he had it, I'm putting it back > the way the schematic shows it with a 1N4007 instead of the 1N91 shown > (already have in my junk box) and a filter cap. > > I'm just trying to understand how he was getting the 24V relay to work > with a 6.3V tranny. > > - JT > > On Thu, Feb 14, 2008 at 10:49 PM, Bob Macklin <[EMAIL PROTECTED]> wrote: > > Connecting diodes in parallel does not really effect the current like > > connecting batteries in parallel. The diode with he lowest forward drop will > > handle most of the current. > > > > But if you really had diodes connected with anode to cathode you don't have > > a rectifier. That configuration is used in voltage limiter circuits. > > > > Got to Radio Shack and get some 1N4000 series diodes and use them for > > rectifiers. You only need one for a 1/2wave rectifier. Or 4 connected in a > > bridge for a full wave rectifier. > > > > Are you sure the ones you have are not connected in a bridge circuit. There > > would be 4 diodes. And 2 of them would have the cathodes connected together. > > The other 2 would have the anodes connected together. > > > > > > Bob Macklin > > K5MYJ > > Seattle, Wa, > > "Real Radios Glow in the Dark" > > > > ----- Original Message ----- > > From: "JT Croteau" <[EMAIL PROTECTED]> > > To: "Discussion of AM Radio in the Amateur Service" > > <[email protected]> > > > > Sent: Thursday, February 14, 2008 7:38 PM > > Subject: Re: [AMRadio] Cap Substitution > > > > > > > > > > > As a follow up to all this talk.. > > > > > > The person who did this mod, was rectifying the power to this 24V > > > relay with three 1N2069's in parallel with 2 cathodes facing one > > > direction and the other cathode facing the opposite direction. These > > > were wired to a dedicated 6.3V tranny he also added. Any idea why he > > > would have done this rather than using the 24V tap on the filament > > > transformer specially there for a 24V relay? I measure roughly 26V on > > > this tap so I would assume the tranny is fine. > > > > > > -- > > > JT Croteau, N1ESE - Manchester, NH (FN42gx) > > > Contest Manager, TARA Skirmish > > > > > > > ______________________________________________________________ > > > Our Main Website: http://www.amfone.net > > > AMRadio mailing list > > > Searchable Archives: http://www.mail-archive.com/[email protected]/ > > > List Rules (must read!): http://w5ami.net/amradiofaq.html > > > List Home: http://mailman.qth.net/mailman/listinfo/amradio > > > Help: http://mailman.qth.net/mmfaq.html > > > Post: mailto:[email protected] > > > To unsubscribe, send an email to [EMAIL PROTECTED] with > > > the word unsubscribe in the message body. > > > > > > > ______________________________________________________________ > > Our Main Website: http://www.amfone.net > > AMRadio mailing list > > Searchable Archives: http://www.mail-archive.com/[email protected]/ > > List Rules (must read!): http://w5ami.net/amradiofaq.html > > List Home: http://mailman.qth.net/mailman/listinfo/amradio > > Help: http://mailman.qth.net/mmfaq.html > > Post: mailto:[email protected] > > To unsubscribe, send an email to [EMAIL PROTECTED] with > > the word unsubscribe in the message body. > > > > > > -- > JT Croteau, N1ESE - Manchester, NH (FN42gx) > Contest Manager, TARA Skirmish > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/[email protected]/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > To unsubscribe, send an email to [EMAIL PROTECTED] with > the word unsubscribe in the message body. > ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
