That should be "center tap" transformer.why ups center tape transformer is (7.6v-0v-7.6) while i has 12v battery ???
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 batteryThat 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.
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