From: shaun.at.pukekohe@gmail.com   
      
   On 14/07/2020 8:08 am, etpm@whidbey.com wrote:   
   > On Mon, 13 Jul 2020 11:31:30 -0400, default    
   > wrote:   
   >   
   >> I have an older window air conditioner that I'd like to hang on to for   
   >> a few more years.  The name plate says it is 220 VAC and since the   
   >> power company went through and upgraded the distribution network and   
   >> replaced HT and transformers my service which had been running 210-220   
   >> volts is now a steady 250 volts and my bill is up ~15%.   
   >>   
   >> The increased consumption is tied to how much I run the AC and since   
   >> the upgrade I've already had to replace both the compressor and fan   
   >> motor run caps.  The compressor one died a quiet death, and the fan   
   >> cap melted and smoked. The compressor cap went out the week they   
   >> changed the transformer and the fan cap about a month later. I put in   
   >> higher voltage ones and the AC is back on line.   
   >>   
   >> I was wondering if putting in 240 VAC to 24VAC center tapped, 10 amp   
   >> power transformer, wired to buck the voltage makes any sense?   
   >    Where I live we get 250 volts pretty steadily. In my shop are   
   > several CNC machines, one of which cannot easily tolerate the 250   
   > volts. So I use two buck/boost xmfrs wired in a particular buck   
   > configuration to lower the 3 phase voltage going to that one machine.   
   > Since doing so the machine has not once alarmede out due to over   
   > voltage.   
   >     I also wired up a little 120 to 12 volt xmfr in buck configuration   
   > to lower the 125 volts from the outlet to the 110 volts needed for a   
   > tube amp.   
   >    There are directions online on how to select the proper sized xmfr   
   > for the load it will be seeing and how to wire the thing in buck   
   > configuration.   
   > Eric   
   >   
      
   Eric could you please give me directions to on-line info? I'm looking at   
   dropping the voltage to a   
   transformer so that I get lower secondaries out of it inexpensively. Single   
   phase. My Google Fu   
   isn't very strong on this one. I remember Big Clive doing similar in one of   
   his videos a while back   
   but have been unable to find that again.   
      
   Cheers,   
   --   
   Shaun.   
      
   "Humans will have advanced a long, long way when religious belief has a cozy   
   little classification   
   in the DSM"   
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