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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
ok i have them set up and working. the 4017 is running 5 leds in a back ad forth pattern (nigh rider pattern) my goal is to have this run 5 relays, because the lghts i will be running have to have 12v. the relay will work with 6v+. my problem is when i turn the voltage up over 9v the 4017 goes...
**broken link removed**
I'm basicly using this except i'm only using one resistor with a switch between the control and ref. and i'm using a 1000ma buckpuck with luxeon III's
6.36V 1.76A from the buckpuck to the leds. I have a switch inbetween the power supple and the buckpuck. if i turn the supply up to 12v then turn the switch on, the led will stay bright for about 10 sec. if i lower the voltage, or turn the switch off and back on the will become bright again.
the leds are mounted on a heat sink. and i used thermal compound to isolate them. the dimming above 9v occurs immediatly, even before the leds have time to heat up. they also did it before i attacked them to the heat sink. I am almost positive they are not overheating.
first off let me say this is not going in a car. Its going on a atv.
I make a headlamp using 4 luxeon III's and a 1000ma buckpuck. by the specs the buckpuck can handle 5-32vdc.
i wired everything up and it works,blindingly!.lol but when i turn my power supply up to around 9-10v the leds...
no sure what bulbs yet. but there are 3 yellow 1 green. yellow on for .5-1sec as soon at the yellow turns on the green turns on with no delay between yellow(off) and green (on)
I need some help. I am making a drag tree. It doesnt have to be perfect. I have everything figured out except one thing. I need to light up 3 bulbs anywere between .5-1 sec then off. when they go off i need one buld to come on and stay on till i reset it. I do not want to have to program a pic...
So i built this amp using the bridged schematic from the datasheet. The amp itself works fine if i run wires to it from an audio sorce (ipod computer ect.). But the original use of this amp is to amplify the sound coming from a bluetooth headset. I'm using a jabra bluetooth that plays music alog...
were can i find out how make/have made a bluetooth component? needs to recieve audio, do phone functions, and be able to connect to a like device for communication.
sorry for the double post. thanks alot for your help. yes they are earphones. i'm integrating the unit inside my helmet so that i don't have to use earbuds. they do produse some bass. they sound similar to noise canceling headphones without the padding.
So am I better off finding lower ohm speakers? Only reason I am using the ones I have is because they are super thin. I believe they are around 5mm. But I'm sure I can find some better. Can someone also suggest a cite about the clipping and such. I don't wanna badger you guys with noob questions
not really tiny. they are similar to these. Thin Square Speaker (Pkg of 2)-The Electronic Goldmine like i said i'm very open to suggestions. Just keep in mind it must fin inside a helmet without feeling it. under the padding
So am I better off finding lower ohm speakers? Only reason I am using the ones I have is because they are super thin. I believe they are around 5mm. But I'm sure I can find some better. Can someone also suggest a cite about the clipping and such. I don't wanna badger you guys with noob questions
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