An idea needed for a simple, automatic voltage regulator for 3V LED.
The application is for an electric model train (HO) which operates on 0V - 16V DC power supply.
Traditionally, these locomotives utilise a 12V micro lightbulb which changes brightness in line with voltage applied to track.
This isn't realistic from a modeller perspective. Brightness is expected to be constant regardless of train speed. The reasonable speed at which the train should travel calls for ~7V supply and that results with a dim headlights.
What is the best and easy way to achieve a constant 3V to the LED installed in the locomotive while the voltage at the track is variable?
The solution must not interfere with a DC motor fed from the same track.
Would this be suitable:
LF33CV
Fixed LDO Voltage Regulator, 3V to 16V, 400mV Dropout, 3.3Vout, 0.5Aout, TO-220-3
https://uk.farnell.com/stmicroelectronics/lf33cv/ic-v-reg-ldo-3-3v-to-220-3/dp/9755322
The application is for an electric model train (HO) which operates on 0V - 16V DC power supply.
Traditionally, these locomotives utilise a 12V micro lightbulb which changes brightness in line with voltage applied to track.
This isn't realistic from a modeller perspective. Brightness is expected to be constant regardless of train speed. The reasonable speed at which the train should travel calls for ~7V supply and that results with a dim headlights.
What is the best and easy way to achieve a constant 3V to the LED installed in the locomotive while the voltage at the track is variable?
The solution must not interfere with a DC motor fed from the same track.
Would this be suitable:
LF33CV
Fixed LDO Voltage Regulator, 3V to 16V, 400mV Dropout, 3.3Vout, 0.5Aout, TO-220-3
https://uk.farnell.com/stmicroelectronics/lf33cv/ic-v-reg-ldo-3-3v-to-220-3/dp/9755322