Question

[Todd Young]

I thought of something last night and wanted to throw it out to the list
for feedback.

We all know that normal voltage to the headlights drops as you turn on
accessories, thereby reducing the available light output from your
headlights. Some of us have wired in relays to direct voltage directly
from the battery to the headlights, thereby shortening the expected life
of the bulb because it is receiving 13.6 volts rather than 12 volts.

Here's my idea, instead of using relays, why not utilize a DC-DC
converter circuit with the relays? Input would still be 13.6 volts
directly from the battery, but with the DC-DC converter, the voltage
from the battery could be a "range" of voltages, but still have an
output from the converter set to a steady 12 volts.

OK, tell me why this wouldn't work? And if it would work, any electrical
engineers out there that could throw together a circuit for us?
--
Todd Young
7079 Dawn Ave. E.
Inver Grove Heights, MN 55076
651-450-7725