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Yamaha FZ-16/ FZ-S

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  • #20776
    Re: Yamaha FZ-16/ FZ-S

    Originally posted by kusmaker View Post
    No problem buddy check and solve any kind of problems, no man we will not curse you, any kind of self inventing does create problems.


    Thanks Buddy.
    Basically I'm doubting the durability of the LED's. I have connected 4 LEDs in series with 100 ohm resistor, like that 10 strings & 2 strings of 3 LEDs in series with 250 ohm resistor all connected in parallel. The problem here is the battery voltage fluctuates while running (can go high up to 14V), plus the voltage drop across the LEDs vary drastically. So its difficult to calculate the optimum resistance value.
    I have one solution, increase the resistor values & save the LEDs from frying up, but that will reduce its intensity and we might have to pack some more LEDs to make the light more brighter. This calls for a totally new setup. Or else increase the resistance & live with the less brighter LED light.
    I'm also trying to find higher intensity LEDs which can easily solve all the problems. Any help in this regard would be much appreciated.

    Click image for larger version Name: 45.jpg Views: 1 Size: 77.2 KB ID: 1890621Click image for larger version Name: 35.jpg Views: 1 Size: 78.4 KB ID: 1890622

    Few more snaps of the current setup.
    Last edited by GauravB728; 09-15-2014, 11:44 PM.
    sigpic
    With you I realized, I have multiple personality disorder. I turn to Bionic when I'm astride you.

    http://www.xbhp.com/talkies/do-yours...onversion.html

    http://www.xbhp.com/talkies/do-yours...ing-light.html

    Comment

    • #20777
      Re: Yamaha FZ-16/ FZ-S

      Excellent work . But IMO you dont have to worry about the LED's being dim. Most LED tail lamps are too bright. Being dimmer is much gentler on the eyes of the guy following your bike.

      If you are worried about fluctuating voltage, use a regulator IC. they are simple to setup and very cheap. You could easily wire the LEDS's with a known resistance or even go for a parallel circuit.

      Comment

      • #20778
        Re: Yamaha FZ-16/ FZ-S

        Originally posted by pranav0091 View Post
        Excellent work . But IMO you dont have to worry about the LED's being dim. Most LED tail lamps are too bright. Being dimmer is much gentler on the eyes of the guy following your bike.

        If you are worried about fluctuating voltage, use a regulator IC. they are simple to setup and very cheap. You could easily wire the LEDS's with a known resistance or even go for a parallel circuit.
        Thanks Pranav. We may not be able to accommodate the IC circuit in the limited space. Anyways, I'll first try to increase the resistor value if its not working properly then will go for some current regulating IC.
        sigpic
        With you I realized, I have multiple personality disorder. I turn to Bionic when I'm astride you.

        http://www.xbhp.com/talkies/do-yours...onversion.html

        http://www.xbhp.com/talkies/do-yours...ing-light.html

        Comment

        • #20779
          Re: Yamaha FZ-16/ FZ-S

          Pranav has pointed out a very important point, brighter led's does create problems though it's good on highways where brighter led's alert the behind driver, but inside city the intensity creates a problem, what kind of regulator Ic are you suggesting.

          Comment

          • #20780
            Re: Yamaha FZ-16/ FZ-S

            Originally posted by GauravB728 View Post
            .
            How are you powering the 1W LED? Are you using 1/4watt resistors for 1W Led? Because 1/4w resistors will burn out. Also you are not using any heatsink for 1W LED and that would be a problem if they are operated at max current limit which is around 350ma.

            Comment

            • #20781
              Re: Yamaha FZ-16/ FZ-S

              Originally posted by sandeepcf View Post
              How are you powering the 1W LED? Are you using 1/4watt resistors for 1W Led? Because 1/4w resistors will burn out. Also you are not using any heatsink for 1W LED and that would be a problem if they are operated at max current limit which is around 350ma.
              Thanks Sandeep. Are you talking about the while LEDs? Beacuse red ones are not 1w and red leds doesn't need heat sink. I don't think white ones will fail in this circuit. I'm much bothered about the red ones. Yes I'm using 1/4w resistor for all of 'em. As per my calculation 1/4w was sufficient. What do you suggest, should I be using 1/2w resistors?
              sigpic
              With you I realized, I have multiple personality disorder. I turn to Bionic when I'm astride you.

              http://www.xbhp.com/talkies/do-yours...onversion.html

              http://www.xbhp.com/talkies/do-yours...ing-light.html

              Comment

              • #20782
                Re: Yamaha FZ-16/ FZ-S

                Originally posted by GauravB728 View Post
                What do you suggest, should I be using 1/2w resistors?
                I am talking about white 1W Leds only.. It would be better and advisable to use 2W resistor for these LEDs. They are prone to failure without higher wattage resistor and heatsink. Red Leds take about 15 to 20ma so 1/4w resistors are enough. 1/2w or 1w resistors would be foolproof.
                You can try 4017 or 555 for more ideas.

                Comment

                • #20783
                  Re: Yamaha FZ-16/ FZ-S

                  [MENTION=49419]kusmaker[/MENTION] [MENTION=47870]devils_friend[/MENTION] @all

                  Hi i have got my fz 16 fixed (fork and handle bar issue)
                  I got the bike from SVC today morning and i rode the bike to office(15 km)
                  The handling seems to be ok now, am not experiencing acute pain in my left wrist as before, gotta test the bike by clocking more Kms

                  Thanks a lot for helping me out guys...

                  Regarding custom stickering which thread should i check for ?

                  Comment

                  • #20784
                    Re: Yamaha FZ-16/ FZ-S

                    Originally posted by kusmaker View Post
                    Pranav has pointed out a very important point, brighter led's does create problems though it's good on highways where brighter led's alert the behind driver, but inside city the intensity creates a problem, what kind of regulator Ic are you suggesting.
                    The 78xx family of ICs - 7809 or 7812 . I guess these are like 5 or 10 rupees each.

                    Choose the IC as [min observed voltage at socket in volts - 2.5V] = XX where the IC is named 78XX. The 2.5 V is the observed loss of voltage at the output of the IC, might be lower for newer variants - I am spewing these numbers from memory.

                    Dont have to worry about max voltage, these can regulate a good range (something like 30V max input voltage i think). Just put a small heatsink in the forms of a aluminium strip/piece on the back of the IC if you really see too much heating, although at 14V, I wouldnt worry much about a heatsink.


                    With these ICs at the head of the circuit, you have no more worries of variable voltage affecting your circuit. You can now design for the voltage-output of the IC and all will be fine.

                    ----consecutive posts auto-merged-----

                    Originally posted by sandeepcf View Post
                    I am talking about white 1W Leds only.. It would be better and advisable to use 2W resistor for these LEDs. They are prone to failure without higher wattage resistor and heatsink. Red Leds take about 15 to 20ma so 1/4w resistors are enough. 1/2w or 1w resistors would be foolproof.
                    You can try 4017 or 555 for more ideas.
                    4017 is a decade counter right ? If yes it opens new possibilities - like two stage LED - say 5 leds light up in the edge at all times and when you brake 5 more from the cenre turn on. Or something along those lines. Electronics is a hobby that can sink a lot of free hours

                    Comment

                    • #20785
                      Re: Yamaha FZ-16/ FZ-S

                      Originally posted by pranav0091 View Post
                      The 78xx family of ICs - 7809 or 7812 . I guess these are like 5 or 10 rupees each.

                      Choose the IC as [min observed voltage at socket in volts - 2.5V] = XX where the IC is named 78XX. The 2.5 V is the observed loss of voltage at the output of the IC, might be lower for newer variants - I am spewing these numbers from memory.

                      Dont have to worry about max voltage, these can regulate a good range (something like 30V max input voltage i think). Just put a small heatsink in the forms of a aluminium strip/piece on the back of the IC if you really see too much heating, although at 14V, I wouldnt worry much about a heatsink.


                      With these ICs at the head of the circuit, you have no more worries of variable voltage affecting your circuit. You can now design for the voltage-output of the IC and all will be fine.

                      ----consecutive posts auto-merged-----



                      4017 is a decade counter right ? If yes it opens new possibilities - like two stage LED - say 5 leds light up in the edge at all times and when you brake 5 more from the cenre turn on. Or something along those lines. Electronics is a hobby that can sink a lot of free hours
                      Man that's a whole lot of info, is it really your hobby which have make you learn so much or are you an electrical engineer, would love to learn more from you if you can spare some time.

                      Comment

                      • #20786
                        Re: Yamaha FZ-16/ FZ-S

                        Thanks Pranav & Sandeep.

                        I'll replace the resistor in series with the white LEDs. Its better to use LM7810 to keep the constant voltage of 10V, or should I use LM7812 to keep it constant at 12V?
                        Last edited by GauravB728; 09-16-2014, 03:25 PM.
                        sigpic
                        With you I realized, I have multiple personality disorder. I turn to Bionic when I'm astride you.

                        http://www.xbhp.com/talkies/do-yours...onversion.html

                        http://www.xbhp.com/talkies/do-yours...ing-light.html

                        Comment

                        • #20787
                          Re: Yamaha FZ-16/ FZ-S

                          Originally posted by GauravB728 View Post
                          Thanks Pranav & Sandeep.

                          I'll replace the resistor in series with the white LEDs. Its better to use LM7810 to keep the constant voltage of 10V, or should I use LM7812 to keep it constant at 12V?
                          I think a LM7810 would fit this need. If the minimum you see at the socket is 14V then you should be fine with a 7812. If it drops to ~12V, then you should ideally be looking at the 7809 (or 7810).

                          Is the FZ a full DC bike - then i guess it will not drop lower than 12 V ?


                          Based on the above, you should have a good idea of what IC to choose. Dont wory, these IC's arent going to make or break the circuit, but will aid in the long-life of the circuit, and the LED's, so 7809 or 7810 - either one is fine tbh.

                          PS: Lesser the difference between the unregulated input voltage and the regulated output voltage (ie, the XX in 78XX) lesser the IC heating. So choose the closest IC in XX , thats just about 2.5V less than the worst voltage seen at the socket in regular use (say, standstill + engine off + highbeam on + caution blinkers on + horn :P )

                          ----consecutive posts auto-merged-----

                          Originally posted by kusmaker View Post
                          Man that's a whole lot of info, is it really your hobby which have make you learn so much or are you an electrical engineer, would love to learn more from you if you can spare some time.
                          Electronics engineer, but the hobby is older than my college education

                          I'll be happy to help whereever I can, but I may be erratic in the response times due to work.

                          Comment

                          • #20788
                            Re: Yamaha FZ-16/ FZ-S

                            Originally posted by pranav0091 View Post

                            Electronics engineer, but the hobby is older than my college education

                            I'll be happy to help whereever I can, but I may be erratic in the response times due to work.

                            Work is the first thing and delay in response time is understandable because of your work, i will not ask my questions on this thread as it will be O/T, what i will do is PM you, i hope you are ok if i do that.

                            Fz is a full DC bike as the headlight can be switched on even when the vehicle is not in starting mode.

                            Comment

                            • #20789
                              Re: Yamaha FZ-16/ FZ-S

                              The thread being filled with some new, interesting and useful info after a long time. Sorry can't contribute to the discussion as i don't know much about electronics. But want to thank for the time given. now carry on..
                              Ride safe and have fun.
                              Regards
                              Nadeem

                              Comment

                              • #20790
                                Re: Yamaha FZ-16/ FZ-S

                                Originally posted by GauravB728 View Post
                                Its better to use LM7810 to keep the constant voltage of 10V, or should I use LM7812 to keep it constant at 12V?
                                Since you are using only three 1w Leds, there is no need to use IC's like LM78xx/LM317. A 47/56ohm 2watt resistor would suffice. The LM78xx ic's are voltage regulators. LEDs need current regulation and that can be achieved by resistors. If you don't want to use resistors which are voltage dependent, you can use LM317 in constant current mode thereby ensuring constant current irrespective of variation in voltage. But a simple resistor will be enough. I am using 10* 1w leds in my speedometer with resistors only for the last 3 years.
                                you can use this http://ledcalc.com/

                                Comment

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