Fundamental component in cellular
telephone set is grouped to be some part :
1. Power
Power part is component that give voltage in every related component and work on command CPU
2. Signal (rx and tx)
Signal part component that regulate signal (in and out) and will send the data to cpu to be cultivated or processed
3. Data (operating system)
This data part functioneds as operating system that cultivate data and give command to entire parts found on cellular telephone set
4. Audio part
This part component that cultivates or work for voice vibration process that enter or secretory voice vibration
1. Power
Power part is component that give voltage in every related component and work on command CPU
2. Signal (rx and tx)
Signal part component that regulate signal (in and out) and will send the data to cpu to be cultivated or processed
3. Data (operating system)
This data part functioneds as operating system that cultivate data and give command to entire parts found on cellular telephone set
4. Audio part
This part component that cultivates or work for voice vibration process that enter or secretory voice vibration
Power part
this power part is divided from several that components in cellular telephone set, that component is among others:
1. Batteray
2. Ic power supply
3. Switch on/ off
4. CPU
When handphone in a state off, batteray give current/voltage to handphone, that is to ic PA, ic regulator, ic charging, ic interfaces
Ic power have function to process and divide current / voltage from batteray then take outside stanby voltage to cpu
When handphone on, CPU get negative voltage (-) from switch on/off, then cpu command to IC power supply for supplying current/voltage to every part in handphone
In Charging process, current/voltage from charger enter to R fuse that functioned as fuse/safeguard in the event of overload current into charging IC.
Current/ Voltage that enter to charging ic will be processed and be taked as output and must as same with batteray voltage.
In charging ic found charging sense as data formed controlling that ic power supply, the function in the event of not appropriate with performance charging ic, so power ic will decide charging and will send data to CPU IC that charging is fail or not charging.
Power supply will take output voltage after handphone in on state, except vbb voltage that functioned as stanby voltage.
If damage in power supply IC happen, there will be no stanby voltage / vbb from power supply
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