Why is so hard to mimic the Knight Rider scanner Effect?

[Omni]

Ugh,

Tomar has a variety of "flashing halogen" police & tactical/military (Govt) lighting that uses many variations of "timed/alternating/flashing", not limited to the example i provided.

The project you outlined is basic in comparison to the designs available through Tomar.

The below is another example how a group of halogen lamps are used in a programmable application, user can select a particular pattern of flashing lamps.

http://www.eccolink.com/ProductPages/LightBarsHMPG.cfm   3055H

Federal, Military, Govt and local authorities have been using flashing halogen lamp assemblies grouped in either a cluster or bar pattern for years.
The point here is "FLASHING" the latter concept is usually programmable in the variety of BAR assemblies.

About the only serious drawback when using flashing halogen is Current demand, most programmable flashing halogen bar's require around 20A! 

 

[ante1]

At least you got the last part right and this high current pulses is exactly what

 

[Omni]

Obviously, you did not take the time to read the instructions concerning the 3055H.

Here it is again:

http://www.eccolink.com/ProductPages/ShowFile.asp?Part=3055H&Type=II


Scroll to page four, the variety of programming methods can perform a similar concept as the knight rider.
Remember, decay/timing interval is the key word.

example:

Let us say the smear time will take 250ms to complete, the latter will leave the filament ON longer than a simple flash before proceeding to the next lamp etc...
The above calculated time can also be outlined with the majority of halogen lamp bars using the rate of time as calculated above.
Remember, the above time can EASILY be re-calculated and adjusted in the event the example time (250ms) is longer-shorter per bulb or all bulbs actively on with smear present on each bulb until the cycle repeats.

Again the key word is "TIME" the halogen does not know it is smearing a flash, the only relative aspect is ON - Decay - OFF; time!

I realize the above may be a lot to understand all at once, and it is apparent this thread is beginning to become a back and forth issue.
 
Additionally, your claim concerning the high current pulses that destroy the filament is also subjective, the filament of a halogen is very rugged in comparison to the typical filament; practically all filament lamps draw current, this is not uncommon.
The 15-20A as require for the ecco/tomar halogen bar lamp is required because they are for EMERGENCY use, they are more than likely illuminating in a burst that exceed the actual rating of the bulb; extremely bright!
The latter is a very good reason for having a Day/Night switch!

Furthermore, under normal conditions as would be the case with a typical project the filament life would last the duration of hours intended by the manufacturer.
I stress the "FACT" that many Federal, Military, Govt and local authorities have been using flashing halogen lamp assemblies grouped in either a cluster or bar pattern for years.

Please, show/link a source where you received your information concerning flashing halogen.
Otherwise, you should refrain from providing false accusations that prevent the individuals within this excellent forum from experimenting.
Many of the forum individuals are new to electronics and depend on an engineering staff for answers.


-Omni

 

[ante1]

We are not talking about the same things here, my practical experiences do not agree with your statements. You are also continuing to referee to certain commercial equipment with no relevance to what I have stated.                        I will not waste more time on this!