khatus
Member level 3
Hello guys I have some bulbs like this.
Which takes about 3.8v,0.3A current. Now i wanted to drive 21 bulbs in parallel.But i have only 12v volatge source.So i decided to use a voltage divider . when i calculate the resistor value required for voltage divider i get the following result.
Since each bulb takes 0.3A current and voltage across each bulb is 3.8V.
But when i simulate it in proteus i have seen that increasing the load causes decreasing the output voltage across the resistor R2.i.e, the output voltage drops from 3.8V to 3.76V.But my requirement is 3.8V. My question is there anything wrong in my equation or solving method??
Which takes about 3.8v,0.3A current. Now i wanted to drive 21 bulbs in parallel.But i have only 12v volatge source.So i decided to use a voltage divider . when i calculate the resistor value required for voltage divider i get the following result.
Since each bulb takes 0.3A current and voltage across each bulb is 3.8V.
But when i simulate it in proteus i have seen that increasing the load causes decreasing the output voltage across the resistor R2.i.e, the output voltage drops from 3.8V to 3.76V.But my requirement is 3.8V. My question is there anything wrong in my equation or solving method??