Search results

  1. Merdan

    hello I am here again. NOw I wont to make a circuit for about 50 leds for forming The word...

    hello I am here again. NOw I wont to make a circuit for about 50 leds for forming The word "TAXI" with red or blue lads. with 555 timer .HOW can I do it
  2. Merdan

    YOU are SEiNG here ONline Where are u???

    YOU are SEiNG here ONline Where are u???
  3. Merdan

    I have posted a new question could you check it out??

    I have posted a new question could you check it out??
  4. Merdan

    how can I make a circuit for more than 70 leds (20mA/2.5V) with 555 timer

    but with 12V input, voltage per a led in a single serie will be: [12-(68*0.02)]/3=3.54V and it is too much for a led (my leds work with 3.00V /20 mA). will the circuit be ok if I use 130 Ohm /0.125W instead of 68 Ohm???? I don't know how much BC337 will increase output currency but I have...
  5. Merdan

    please help I have to finish a project in 2-3 days, I have post a new question .........

    please help I have to finish a project in 2-3 days, I have post a new question .........
  6. Merdan

    how can I make a circuit for more than 70 leds (20mA/2.5V) with 555 timer

    for 12V input and leds(3.00V; 20 mA) what will change in the circuit??? Could you post a new picture again???(3 leds in a series)
  7. Merdan

    how can I make a circuit for more than 70 leds (20mA/2.5V) with 555 timer

    I have calculate it as follows: 20 mA*24=576 mA
  8. Merdan

    how can I make a circuit for more than 70 leds (20mA/2.5V) with 555 timer

    emc2, thanks for all; but my questions haven't end. How can I calculate the output currency up 2 my circuit? (each led is 20mA and 3.4V )
  9. Merdan

    how can I make a circuit for more than 70 leds (20mA/2.5V) with 555 timer

    I have made one and I think it will work; also I put the picture of circuit. I would like you to look and write your opinion about, if it needs some components please put them on the same picture( with spesifications, exact names) and send it back. Thanks for your previous circuit!:)
  10. Merdan

    how can I make a circuit for more than 70 leds (20mA/2.5V) with 555 timer

    how can I make a circuit for more than 70 leds (20mA /2.5V) with 555 timer:)I want them all to run at the same time.