Re: DC Power sources for a 1920's Synchronome master & Current Regulation?

Thomas D. Erb

I'm not familiar with this type of master - but if it is really voltage-sensitive you can also use a diode - each diode will subtract .7 volts from the power supply.

alkaline batteries nominal voltage is 1.5VDC so 3 in series would give you 4.5VDC. 

If the master really draws 350ma - you would'nt get a lot of life - 

A D cell battery will give you 12000-18000 mAh

12000/350=34.2857 to 18000/350=51.4286

so between 34 and 50 hours of run time.  

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