Images of items I have purchased (except trainers [no feet pics])

I wonder if I can take the output of a Joule thief and use it to drive a 3909 flasher circuit - I don't see any reason why not. I've been rummaging through the junk drawer for some 2N3904s or equivalents but I don't have any so I've ordered a handful from eBay for pennies. I'll just knock one up on the end of that piece of breadboard and feed the output into the flasher.
 
:(

What was wrong with it then? I have two weeks to send this back............
i have had my pro3 for years, still love it,
i still have a desktop as well but as a portable i think the pro range is great-perfect no, but it does the job just fine.
 
Came earlier than expected.............

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I wonder if I can take the output of a Joule thief and use it to drive a 3909 flasher circuit - I don't see any reason why not. I've been rummaging through the junk drawer for some 2N3904s or equivalents but I don't have any so I've ordered a handful from eBay for pennies. I'll just knock one up on the end of that piece of breadboard and feed the output into the flasher.

No harm in trying, although depending on the flasher, it'll be 3 volts at roughly 45000 hz .. will the flasher just stay on as it think the 3 volts is it just being turned on.
 
Just because I refuse to buy into Apple world - i5, 256Gb Harddrive, 8Gb ram Surface Pro 4

These ARE a very good machine. But they're very marmite. You'll either get along with it and love it or want to throw it out the window!
 
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New coffee machine. Nespresso this is not. Already gone through most of a bag of semi-fresh beans just dialling it in. Not quite there yet. Then I need to work on my milk frothing. I scalded the first couple of goes.

My perfect flat white is there somewhere though.

I have this very machine - it's a great piece of kit.
 
A Joule Thief ... LEDs won't work of a voltage under 3 volts, but when you turn a transistor on with a 1.5 volt battery, you get a spike of 3 volts before it drops back to 1.5 volts, add in a ferrite bead and you can have a resonating circuit and you can turn an transistor on and off at 40000Hz .. so you can get 3 volts out of a single 1.5 volt battery. Joule Thiefs also work long after a battery in dead, meaning you can run an LED for months off a dead battery, one bloke I read about had over a year.

Very clever - and thanks for explaining that in simple terms bud :)
 
As im so bored, waiting to see what happens with work, thought i would entertain mysefl.
So plans for a 78" wingspan B52
a small section, its on 2 xA0 sheets.
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