Don, Perhaps you have already seen this LBI on the Master Index:
<www.repeater-builder.com/ge/lbi-library/lbi-30869l.pdf> It may not be a good idea to assume that the above LBI applies to your unit, simply because it appears to be the only LBI in the list that is applicable. There may be other LBIs that are not yet posted, and one of them may be the one you need. However, if LBI-30869L happens to be exactly the one you need, it would seem that the maximum charging current cannot exceed either 2 amperes or 3 amperes, depending upon the value of the fuse. The float voltage is set with the pot R4 or R16, again depending upon which model and group unit you have installed. One thing to keep in mind is that a continuous-duty station power supply is frequently sized to supply the maximum amount of current needed when operating at full power, plus a little extra. If you don't limit the charging current to your backup battery when AC power returns, the station power supply may be unable to supply both the PA load AND a hefty battery charging load. The one-ohm, ten-watt resistor in the emitter leg of the large pass transistor exists primarily to limit the charging current to some value below the fuse rating, which value again depends upon which model you have. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Don E. Wisdom Sent: Friday, May 11, 2007 8:46 PM To: [email protected] Subject: [Norton AntiSpam] RE: [Repeater-Builder] Mastr II Power supply battery revert option questions Its on the master index. Mastr II - INTERNAL BATTERY STANDBY CHARGER OPTION BC01 (9669), 9670 AND 9771 LBI30869L. Its the stock ferro power supply. I would assume its part # is 19D430272G1 --Don -----Original Message----- From: [email protected] on behalf of Mike Morris WA6ILQ Sent: Fri 5/11/2007 21:14 To: [email protected] Subject: Re: [Repeater-Builder] Mastr II Power supply battery revert option questions At 06:22 PM 05/11/07, you wrote: >Hi All, >Does anyone know what charging current the Mastr II battery charger >/ battery revert option supplies to the batteries? Is using this a >good idea or a bad one? I highly doubt its a smart charger or has >a trickle function to float batteries. Im looking at using the >charger thats built into my power supply but im open to other >options as well. >Thanks >--Don >KD7WKF Forgot to ask - what LBI is that option? If it's on the LBI master list I could look at the LBI and at the schematic... Or if you don't know the LBI, what is the supply part number? Mike !SIG:4645328476081098477382!
