Steve said that, someone on the staff hooked me up with that avatar shortly after I joined...
There is, in general, only one person to blame for that sort of thing...
Steve said that, someone on the staff hooked me up with that avatar shortly after I joined...
There is, in general, only one person to blame for that sort of thing...
I agree. But he seems to have a fixation on using these PCBs which are based on that design. I wasn't inclined to continue with that design, but I was able to make several improvements without hugely changing the circuit.
Yes, canny. It took me a special request just to get the power supply information out of you.Hmmm canny... I had posted a whole list of reqs for it...
I'm really sorry to hear that. Sandy has been big news here and everyone is upset about it.But unfortunately I am in the area hit by the storm in the NE USA...no power, heat nor hot water in the house--and cannot do much on this now..
Have you tried the suggestions I gave for modifying the original design?I was keen on the PCB in question because I can get those without going through a production cycle..but I am having second thoughts now..after wasting so much time on this.. So I guess I will have go though an entire production cycle $$$, something I don't have any experience doing and I am hoping I can get some help with...
Yes, canny. It took me a special request just to get the power supply information out of you.
Everyone on electronics forums likes to help, but you really can save us a lot of time and effort by giving us a thorough description of what you want to do, and all the factors that have been decided. There is so much information you could have provided that you still haven't. The message I'm replying to has some of the kind of information that you should have provided up-front.
I'm really sorry to hear that. Sandy has been big news here and everyone is upset about it.
Have you tried the suggestions I gave for modifying the original design?
You began this thread wanting to strobe a single high current LED with a simple circuit. I took the time to give you this a few posts back but you didn't acknowledge it. Perhaps Sandy caused you to miss it.
Chris
You began this thread wanting to strobe a single high current LED with a simple circuit. I took the time to give you this a few posts back but you didn't acknowledge it. Perhaps Sandy caused you to miss it.
Chris
Does this circuit create only and on/off signal or can it also create a strobe wave effect?
I understand. It's just that when we ask questions, we ask them for a reason, even if the reason may not be obvious to you. It's frustrating when these questions don't get answered, especially if we ask them several times in a row.Please forgive me.. I originally posted 5v as the input power and was not aware that was insufficient..I am a noob..
Yes, and I must apologise back to you Jim. You had said that before, and it was rude of me to hurry you along.I have not had much of a chance to try anything since the storm hit.
I understand. It's just that when we ask questions, we ask them for a reason, even if the reason may not be obvious to you. It's frustrating when these questions don't get answered, especially if we ask them several times in a row.
Yes, and I must apologise back to you Jim. You had said that before, and it was rude of me to hurry you along.
Kris
What is a strobe wave effect? Strobes in general just flash on and off rapidly...
CDRIVE's picture shows you the waveform output of the circuit, it's an on/off square wave...
You began this thread wanting to strobe a single high current LED with a simple circuit. I took the time to give you this a few posts back but you didn't acknowledge it. Perhaps Sandy caused you to miss it.
Chris
The effect is similar to a flash bulb--kind of a light explosion--and when a couple of folks saw the light when I was working with it they commented that it looked interesting, they said wow cool.. This is not the reaction when dealing with a simple on/off and the effect looks and feels different.. It is key to the effect I need here.
Film it if you can... Flash bulbs are simply on/off nothing fancy or special about them ramping up, the circuit charges up and *POOF* an instantaneous on followed by a quick off... Same with old practical (powder or filament) or new xenon tubes...
That's why I set up the 555 for a brief pulse. That's what strobe effect is. R4 controls the pulse width. You can easily make it shorter or longer.
Chris
There is no ramp up in a strobe, there is a charge up of a capacitor behind the scenes but until it's discharged there is no light to be seen, the light on discharge is instantaneous with no ramp up as it only last a few milliseconds... Same with flash powder and old filament flashes, no glow before hand just an instantaneous flash...
The ramp up you think you might be seeing is likely the human eyes inability to adjust fast enough and take it all in...
If you want a ramp up the circuit will get more involved... IMO digital is better as the ramp can be more tightly controlled, analog ramp ups of short duration are hard to control and adjust (at least no where near as easy as a digital circuit)... But, this is not the way a strobe works...