Energy consumption of your phone charger without connecting your phone:
If 4 watts charger considers;
Full load current : at DC (Direct Current) voltage of 325v (output of diode bridge=230*1.414V)
Full load current= Watt/Voltage=4/325=0.0123A
- As standard manufacturing value considered
Rectifier Current: 50 uA
Transformer current: 0.5% of full load current
- 0.005*0.0123
- 5 uA
Thyristor+Others no load current= 10% of full load current
-
- =0.1*0.0123
- 00123A
No load power consumption of my charger=V* no load current(Rectifier(4 diodes)+TFR+Thyristor+other)
- 325*(50*4*10^-6+61.5*10^-6+1230*10^-6) watt
- 4 Watt per hour
Per day= 0.4*24
- 6 Watts per day=0.0096 units
Per month=9.6 * 30
- 288 Watts=0.288 units
- Units cost= 2.89 Rs per unit
