raphaelriv
New Member
hello, i am trying to use a voltage divider to power up a radio for testing purposes, i actually thought this was to be more simple than this but my input is a 12V battery, Load Resistance 90K, I need 3amps at my output with just 8V. I tried a R1 = 10K and a R2 = 27K according to this formula things should work but they don't:
Vout = Vin*(R2//RL)/(R1+(R2//RL))
Vout = R2 * Vin / R1+R2+(R1*R2/RL)
but as soon as i hook the load the radio cuts out, not enough current nor voltage but if the calculations are right then i should and do have 8.1volts at my output with that load resistance.
Vout = Vin*(R2//RL)/(R1+(R2//RL))
Vout = R2 * Vin / R1+R2+(R1*R2/RL)
but as soon as i hook the load the radio cuts out, not enough current nor voltage but if the calculations are right then i should and do have 8.1volts at my output with that load resistance.