I hate to do this again but I have done some homework first and use the search button with good results.
Here is the circuit I'm going to use, it does exactly what I need.
http://www.sentex.ca/~mec1995/circ/motflash.html
And I have most everything in stock, but the 3.3 UF cap, and the TIP117.
I have three wires, one brake, one running light, and ground.
I want to switch to LED's too. I'm thinking two sets of LEDs one for brake one for running. 3 or 4 to 1 ratio. I think it would be easier to design and build, and maybe more reliable. I'm open to sugestions.
So here are a few questions.
1. The circuit uses a TIP117. I am guessing as a switch. Is it just a high current transistor? Stick with that or is there something better for the LEDs?
2. What type of LEDs?
2a. Red or white? I'm going to use the stock red lens, the bulb is white does it matter?
2b. I would think a wide angle would be best. I was looking at something like this...http://cgi.ebay.com/100-x-5mm-White...emQQptZLH_DefaultDomain_0?hash=item3ca5fcc5c3
What about flux like this http://cgi.ebay.com/20-x-4-Pin-Supe...emQQptZLH_DefaultDomain_0?hash=item35a1b04c70
2c.3mm, 5mm, 10mm,? I have some of these in white and red I could try.
2d. What about a 1w star, a bit pricey but, if I would need less of them?
3. I was going to use one resistor per LED, if I have room on the pref board. I know I can go more but I have had problems before with a resistor going bad and blowing a whole string of LEDs.
4. I know you can't answer this without knowing what LEDs I'm going to use, but how many LEDs should I start with? Say for a 5000mcd white super bright?
I do know how to figure the resistor values and things like that. I don't want you to everything for me, I'll never learn that way. Just head me in the right direction.
Thanks,
Here is the circuit I'm going to use, it does exactly what I need.
http://www.sentex.ca/~mec1995/circ/motflash.html
And I have most everything in stock, but the 3.3 UF cap, and the TIP117.
I have three wires, one brake, one running light, and ground.
I want to switch to LED's too. I'm thinking two sets of LEDs one for brake one for running. 3 or 4 to 1 ratio. I think it would be easier to design and build, and maybe more reliable. I'm open to sugestions.
So here are a few questions.
1. The circuit uses a TIP117. I am guessing as a switch. Is it just a high current transistor? Stick with that or is there something better for the LEDs?
2. What type of LEDs?
2a. Red or white? I'm going to use the stock red lens, the bulb is white does it matter?
2b. I would think a wide angle would be best. I was looking at something like this...http://cgi.ebay.com/100-x-5mm-White...emQQptZLH_DefaultDomain_0?hash=item3ca5fcc5c3
What about flux like this http://cgi.ebay.com/20-x-4-Pin-Supe...emQQptZLH_DefaultDomain_0?hash=item35a1b04c70
2c.3mm, 5mm, 10mm,? I have some of these in white and red I could try.
2d. What about a 1w star, a bit pricey but, if I would need less of them?
3. I was going to use one resistor per LED, if I have room on the pref board. I know I can go more but I have had problems before with a resistor going bad and blowing a whole string of LEDs.
4. I know you can't answer this without knowing what LEDs I'm going to use, but how many LEDs should I start with? Say for a 5000mcd white super bright?
I do know how to figure the resistor values and things like that. I don't want you to everything for me, I'll never learn that way. Just head me in the right direction.
Thanks,