1.5v LED tester

191

02:37:57

Another mini circuit to test LED with a single AA battery. Only gives a flash, but enough to check bulb is ok. Handy to have on workbench.
Added the 2 way switch to ground the circuit and clear residual charge so it will flash again when switch is closed.

published 8 years ago

LeButch

8 years ago

Pretty cool.

rich11292000

8 years ago

How are we going to see this?

bfgstew

8 years ago

Look at it.......????

2ctiby

8 years ago

@bfgstew ... Highlight any part on your schematic so that the oscilloscope becomes available. Then move its timescale to read 1s (which simulates real time). Then look at your flashing LED. The flash time which you set originally was so fast that the eye would not see it in real time. It was only visible here due to the default, unnoticed, slow-motion EC timescale of 2 nano seconds.

rich11292000

8 years ago

The pulse is smaller than 10ps. You can't look and see that.

2ctiby

8 years ago

Yes, the pulse is well smaller than the timescale that I mentioned....no chance of seeing it either way.

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