Hello Bob,
The resistor to be connected in series depends on the value of the internal
resistance of the bulb. But in the case of a 6 Volt bulb to be hooked at a
12 Volt source, the theoretical answer is very easy: the resistor should
have the same resistance as the bulb.
The actual resistance of the bulb can be either measured or calculated:
Internal resistance (in Ohms): nominal voltage squared (6V x 6V) divided by
nominal power output (in Watts).
Of course that is all theoretical, applying Ohm's law.
Regards.
Jesus
53 TD
-----Mensaje original-----
De: owner-mg-t@autox.team.net [mailto:owner-mg-t@autox.team.net] En nombre
de Bob Howard
Enviado el: domingo, 28 de marzo de 2004 14:11
Para: ddubois@sinclair.net
CC: mg-t@autox.team.net
Asunto: Re: switch winding (again)
Dave,
For my TD, I jumped one socket's mile of wire and bought a replacement
socket for the other; use 12v bulbs in each. As you said, the 12v is
mighty bright. The 12v bulb in the new socket, that has some resistance
wire wound around it though I can't tell how much and didn't measure
resistance, is dimmer though still visible night and day.
How does one figure the resistance needed to use a bulb other than
12v, for instance, using a more-common 6v in a socket that had its
original mile of wire rust away?
Bob
On Sat, 27 Mar 2004 11:00:41 -0800 Dave & Liz DuBois
<ddubois@sinclair.net> writes:
> Bud,
>
> The fuel warning lights were originally 2.5 volts and they had a
> resistor in the for of wrapped nichrome wire wound around the
> outside of the socket. I added an additional resistor on mine to cut
down the
> brightness of the light, which I found a pain at night. I don't see
> any reason that the resistance winding couldn't be bypassed and a 12
> volt bulb used in place of the 2.5 volt bulb. The 2.5 volt bulbs are
a
> bit hard to find, although Moss or Abingdon should carry them as they
> are available, they just have to be special ordered.
>
> Good luck,
> Dave
/// unsubscribe/change address requests to majordomo@autox.team.net or try
/// http://www.team.net/mailman/listinfo
/// Archives at http://www.team.net/archive/mg-t
|