20 Jun
2013
20 Jun
'13
11:53 a.m.
On 6/19/2013 1:10 PM, Tony Duell wrote:
Yes they do, but I know I couldn't find one of those in a hurry...
Incidentally, if you connect normal LEDs in series with a flashing LED
they all flash in unison. What I have never tried is 2 flashing LEDs in
series, or 2 flashing LEDs in parallel, in series with a few noraml LEDs.
I cna see I am ogign to have to buy a couple of flashing LEds and try it
out...
-tony
Of the other 2 solutions, it's not so celar
which is the simpler one. The
2 transistor circuit certainly has the fewest active components. But it's
harder to design than the 555 circuit, and the 555 is not hard to fully
understand (I sometimeswonder if anyone actually reads the 555 data sheet
rather than jsut using the ocmmon circuits, it's well worth doing that).
Practically, which I used would probably depend on the components I could
quickly find.
Now that I think about don't they make flashing leds.