Reply
 
Thread Tools Display Modes
 
Old 10-06-2017, 08:36 AM   #261
Traveling
 
Join Date: Nov 2015
Location: Midwest
Posts: 2,573
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
Quote:
Originally Posted by cadillackid View Post

if you go LED's you may very well get he super fast blink.. which to me is not an issue - fast flash = high visibility = Good

-Christopher
We had to use these on military trucks when upgrading to LED flashers so as not to induce seizures.

50W 6Ohm LED Load Resistors for LED Turn Signal Lights or LED License Plate Lights (Fix Hyper Flash, Warning Cancellor)

resis.jpg
Rusty is offline   Reply With Quote
Old 10-06-2017, 09:08 AM   #262
Bus Geek
 
Brewerbob's Avatar
 
Join Date: Oct 2016
Location: Essex, MD
Posts: 3,001
Year: 1999
Chassis: Blue Bird TC RE 3904, Flat Nose, 40', 277" wh base
Engine: 8.3L Cummins ISC 260hp, AT643, 4.44 rear
Rated Cap: 84 pax or 1 RV; 33,000lbs
50W at 12Vdc ... 4 amps. Yeah I guess that's about right but holy hell that's big when used to dealing with electronics.
Brewerbob is offline   Reply With Quote
Old 10-06-2017, 09:40 AM   #263
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 9,780
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Brewerbob View Post
50W at 12Vdc ... 4 amps. Yeah I guess that's about right but holy hell that's big when used to dealing with electronics.

no TRIAC wave chopping there.. 48 watt resistors LOL.. not like the typical 1/4 or 1/8 watt stuff we use in electronics circuits
-Christopher
cadillackid is offline   Reply With Quote
Old 10-06-2017, 09:47 AM   #264
Bus Geek
 
Brewerbob's Avatar
 
Join Date: Oct 2016
Location: Essex, MD
Posts: 3,001
Year: 1999
Chassis: Blue Bird TC RE 3904, Flat Nose, 40', 277" wh base
Engine: 8.3L Cummins ISC 260hp, AT643, 4.44 rear
Rated Cap: 84 pax or 1 RV; 33,000lbs
Quote:
Originally Posted by cadillackid View Post
no TRIAC wave chopping there.. 48 watt resistors LOL.. not like the typical 1/4 or 1/8 watt stuff we use in electronics circuits
-Christopher
Wave chopping??? Resistors don't do that anyway and this is DC so.... Yeah the 1/4 ~ 1 W were BIG. My '72 Duster had a wire wound 50W ballast resistor on it. As far as I know, that was as "electronic" as that car was. Carb, no ABS, ... well there was the voltage regulator with something for diodes in it. Separate from the alternator in those days.
Brewerbob is offline   Reply With Quote
Old 10-06-2017, 09:56 AM   #265
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 9,780
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Brewerbob View Post
Wave chopping??? Resistors don't do that anyway and this is DC so.... Yeah the 1/4 ~ 1 W were BIG. My '72 Duster had a wire wound 50W ballast resistor on it. As far as I know, that was as "electronic" as that car was. Carb, no ABS, ... well there was the voltage regulator with something for diodes in it. Separate from the alternator in those days.
thats why I said *NO* wave chopping here because these are resistors... and its DC...
cadillackid is offline   Reply With Quote
Old 10-06-2017, 10:02 AM   #266
Bus Geek
 
Brewerbob's Avatar
 
Join Date: Oct 2016
Location: Essex, MD
Posts: 3,001
Year: 1999
Chassis: Blue Bird TC RE 3904, Flat Nose, 40', 277" wh base
Engine: 8.3L Cummins ISC 260hp, AT643, 4.44 rear
Rated Cap: 84 pax or 1 RV; 33,000lbs
Quote:
Originally Posted by cadillackid View Post
thats why I said *NO* wave chopping here because these are resistors... and its DC...
Wasn't sure why TRIAC was even mentioned; are they cheaper/easier to find? Ballast resistor should be the cheaper/easier route but I haven't tried buying electronic parts in forever.
Brewerbob is offline   Reply With Quote
Old 10-06-2017, 10:12 AM   #267
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 9,780
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
TRIAC is used in AC circuits and chops the wave.. in AC circuits they dont absorb the energy like a ballast resistor does in a DC circuit.. it was an off-the-cuff comment.. they are quite small.. the 600-1000 watt dimmers with the paddles in most newer homes are TRIAC based and dont require huge space and only small heat sinks..
-Christopher
cadillackid is offline   Reply With Quote
Old 10-06-2017, 10:45 AM   #268
Traveling
 
Join Date: Nov 2015
Location: Midwest
Posts: 2,573
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
Quote:
Originally Posted by cadillackid View Post
no TRIAC wave chopping there.. 48 watt resistors LOL.. not like the typical 1/4 or 1/8 watt stuff we use in electronics circuits
-Christopher
Yeah, overkill, but $6/ pair. I bet them LED's need the heatsink for dissipation.

I like this gizmo. Resistance is futile.


resistance-measuring-resistor.jpg
Rusty is offline   Reply With Quote
Old 10-06-2017, 11:09 AM   #269
Bus Geek
 
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
Quote:
Originally Posted by Brewerbob View Post
50W at 12Vdc ... 4 amps. Yeah I guess that's about right but holy hell that's big when used to dealing with electronics.
Generally they only need to be rated the same resistance as the bulb they are replacing .. so around 20W.

superbrightleds.com has decent examples. Too high a load could put a strain on the flasher unit.
__________________
Steve Bracken

Build Thread
Twigg is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:33 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.