|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
01-16-2018, 09:54 AM | #1 |
Senior Member
Join Date: Jul 2010
Location: upstate NY near Mass border
Posts: 789
|
voltage regulator????
Tom W. may have the answer to this one as it is not Model A. My son has a 37 chevy truck that has the resistor on the light switch to allow the generator to produce more voltage when the headlights are on. The resistor is broken and we are wondering if there is a source for them or if Toms regulator can be mounted on the generator making the resistor obsolete? Thanks, Jack
|
01-16-2018, 10:53 AM | #2 |
Senior Member
Join Date: May 2010
Location: Portland OR
Posts: 6,340
|
Re: voltage regulator????
You might try going to Vintage Chevrolet Club of America's web site and sign up. The teck section can be used by non members of the club.
My basic understanding of how a resistor in this situation works is; The resistor is a voltage limiting device, as more current flows to the switch it get hotter limiting the output keeping the voltage at for example a steady 6 volts to the headlights. I am pretty sure the regulator and the resisters do different things in the system, the resister is being used to prevent spikes and keep the head lights the same brightness all the time while running.
__________________
I know the voices aren't real but damn they have some good ideas! |
Sponsored Links (Register now to hide all advertisements) |
|
01-17-2018, 02:59 AM | #3 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: voltage regulator????
I'd think the resistor is in the circuit when the lights are off, thus cutting back the voltage feeding the field windings.
When the lights are turned on the resistor is bypassed and the generator puts out more amps. Someone must have a good resistor or at least know the value in ohms, so you can replace it. |
01-17-2018, 04:48 AM | #4 |
Junior Member
Join Date: Jan 2014
Posts: 12
|
Re: voltage regulator????
Where is the resistor on the light switch and what is it connected to? I have a vehicle that has a resistor, which is just a small coil of wire, on the rear of the light switch. It's only function is to produce a voltage drop when the head lights are on low beam, thereby reducing their brightness. The head lights use a single filament bulb. On high beam, the resistor is omitted from the circuit, causing full voltage to be provide to the lights. A primitive method of providing high and low beam lights.
|
01-17-2018, 10:46 AM | #5 | |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: voltage regulator????
Quote:
Many light switches also have a resistor coil to dim the instrument lights. |
|
01-17-2018, 04:14 PM | #6 |
Junior Member
Join Date: Jan 2014
Posts: 12
|
Re: voltage regulator????
|
01-17-2018, 05:22 PM | #7 |
Senior Member
Join Date: Jul 2010
Location: upstate NY near Mass border
Posts: 789
|
Re: voltage regulator????
I have tried the Chevy site's and have not received any useful reply. I am wondering if a VR like Tom makes will work and adjust the output of the generator as conditions require. Jack
|
01-19-2018, 12:27 AM | #8 |
Senior Member
|
Re: voltage regulator????
I found this,
"Mounts on the headlight switch 1-1/4″ long and 0.75 ohms." https://www.oldsobsolete.com/product...or-sale/254-2/ and this, http://chevy.oldcarmanualproject.com...es/37truck.jpg
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II |
|
|
Sponsored Links (Register now to hide all advertisements) |
|