ups center tape transformer

GopherT

Joined Nov 23, 2012
8,012
why ups center tape transformer is (7.6v-0v-7.6) while i has 12v battery ???
That should be "center tap" transformer.

Next. 7.6 for each side is 15.2V total AC (as RMS voltage).

Once the 15.2 v is rectified and smoothed with decoupling capacitors, with minimal load, the DC should be equal to the Peak-to-peak (minus rectifier diode drops). Or, RMS voltage x 1.414 or about 21 volts.
 

Thread Starter

green90

Joined Sep 3, 2015
29
That should be "center tap" transformer.

Next. 7.6 for each side is 15.2V total AC (as RMS voltage).

Once the 15.2 v is rectified and smoothed with decoupling capacitors, with minimal load, the DC should be equal to the Peak-to-peak (minus rectifier diode drops). Or, RMS voltage x 1.414 or about 21 volts.
thank you ... but in inverters cct always use 12v-0v-12v while in ups (7.6v-0v-7.6) while in both case using 12v battery
Very-simple-50-watt-inverter-using-MJ2955.png
 
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