Friday, December 2, 2016

Circuit Schematic Mobile Phone Battery Emulator using LM317 IC

Battery. - This is one a circuit schematic of Mobile Phone Battery Emulator using LM317 IC look like in Figure 1 below. In this circuit schematic the basic component used is LM317 IC as the regulator component. 

In here we will give you global description about this circuit schematic of Mobile Phone Battery Emulator using LM317 IC and then we will give you link to continue your reading from original site from the external website.

Circuit Schematic

Component Part

  • LM317
  • LED
  • Resistors
  • Capacitors
  • Variable resistor
  • Connector
Description

Circuit schematic like in Figure 1 above is Circuit Schematic Mobile Phone Battery Emulator using LM317 IC. Electroschematics site describe that the typical target voltage of the Li-ion battery is 4.2 V (note that the target voltage is not the same as the nominal voltage, as it is 3.7 V typical). An adjustable voltage regulator is designed as the mobile phone battery emulator. The circuit based on the popular three-pin adjustable voltage regulator LM317T (IC1) receives external dc input of 9 V/2 A through input connector J1. The output voltage available at connector J2 can be adjusted from just below 3 V to just above 4 V with the help of the 500-Ω multi-turn preset pot (RP1). Although most devices powered by Nokia batteries appear to work well at about 4.2 V, a little bit of experimentation with the values of resistors R2-R3-RP1 may be necessary. As stated earlier, the 82-kΩ resistor (R4) is essential to fooling the device into thinking that a real battery is attached at its battery connector.

And now you can read more you knowledge about circuit schematic of Mobile Phone Battery Emulator using LM317 IC from the original source article using link [here].


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