I built many such oscillators same way. But I used BC107 NPN, connected collector to the ground, emmiter to resistor/capacitornet. Base free. Add LED in series with such connected transistor, and you have LED blinker.
It's fun reading all that posts about dangerous caps, dangerous flyback transformers...
Those fears, and your findings I can read - were/are something normal in my world. I was paid to do that. But faked technology advance, ruined service techicians job. And now mices take over... So you have it. Deal with it. And be afraid - be very afraid :)
Everything went well then. I graduated without computers help - on computers. Today it's vice versa. Today every new os version - just new clicks or taps, for poor little John to make it with less clicks, and this is always presented as biig advance in computer field. Yes, I mean Microsoft and Apple and .... Everything screwed up for the sake of profit for the shareholders. Every new tech carries the burden of shareholders just thinking of profit.
Beside all of that, if you convert let's say 1/10 of cars with internal combustion engines to electric motor cars, there is no electricity to charge them. Which also leads to envirnonmental problems - creating so much electricity (+ CO2 emmision from thermal-electric plants). Just count average low electric car consumption 15kWh/100km.
While true if you haven't noticed it Solar and Wind are taking off at a staggering rate for electrical production. At prices around $15 per MWH they are substantially cheaper than gas/coal/oil electrical production. The economics just work out now in a big way and renewables are so much cheaper fossil fuels days are numbered.
Besides if you just car about the economics and not the potential reduction on the planet they are still cheaper to run over their lifetime compared to petrol.
If renewables are substantially cheaper, why did the UK and the rest of Europe have an energy crisis and record energy prices?
The two things don’t add up, on one hand you have people claiming renewables are cheaper than ever, on the other you have skyrocketing electric bills. If renewables don’t actually decrease energy prices for consumers then claiming it’s cheaper is misleading.
There's a war on and some gas lines were blown up. Consequences: A cold winter last winter, and countries scrambling to build expensive LNG terminals.
Last time I looked in this corner of Europe, it takes about 3-6 months to get an appointment to install solar and/or an electric heat pump. Installers can't keep up with demand, and they can't train new people faster than they're already doing.
That definitely isn't happening because the gas alternatives are so cheap.
Energy prices are high not because people are converting. They're high because of the shock caused by the (then) sudden unexpected war in Ukraine, and people simply can't convert fast enough.
> What senile, old, corrupt and/or stupid politicians decide isn't necessarily the rational choice, and in fact is often the opposite.
For example, these smirking German assholes, who I would have enjoyed seeing being interviewed last winter after Russia knocked the dumb smirks off their faces: https://www.youtube.com/watch?v=FfJv9QYrlwg
Because they don't have enough renewables yet and run on gas. It was gas prices that went ridiculously high after Russian gas was shut off and there wasn't enough.
Big power plants are more efficient than small ones, otherwise everyone would have a generator at home. The question is what difference batteries make.
Of course it isn't. I don't vote for internal combustion technology at all. Both are environmental problem. Looking at all the (ex) hype about electric cars, sometime it looks like electrics - they clean the environment...
Internal combustion will stay for a long time in heavy machinery, sea and air transport, which is also problem, if not prevalent, so electric cars will bring negligible health improvement to planet. And add all the wars - our efforts to lower carbon footprint on this planet are so funny and naive.
In my middle school 1983 we had similar, but with SC/MP uP, hex keyboard, 8 LED output port. We called it scamp, learning machine code and basics of architecture. Advanced students worked on a Cromemco, and we, dumbasses, we learned on that scamp.
Welcome to the truth. Tires wear and all of that stays on the road, or next to the roads, seas, oceans. Years...tires...
And then, we have to sort each plastic HDPE bag to save the Earth. Feel guilt if we don't.
Ok that.
I hope that they are sorting waste in Ukraine. Otherwise, my efforts are in vane.
The indignity! Don't do it if you don't want to, but let's not pretend sorting a plastic bag is a major imposition. Just because something is a worse polluter doesn't mean we can't improve anything else.
sort them if you want, but more than 90% of the stuff that is sorted and 'recycled' doesn't actually get recycled - its gets buried or burned just like regular trash.
Much better to not generate it in the first place, i.e. make a conscious effort to reduce what you buy and consume where possible.
"This will likely come as no surprise to longtime readers, but according to National Geographic, an astonishing 91 percent of plastic doesn’t actually get recycled. This means that only around 9 percent is being recycled. As if that weren’t enough, nearly all of that plastic that does get recycled is actually downcycled, which means it gets less and less useful every time, eventually becoming so flimsy that it can no longer be recycled properly.
As it is, that 91 percent just sits in landfills, piling up and breaking down slowly into arguably more dangerous microplastics. National Geographic reports that by 2050, approximately 12 billion metric tons of plastic will be sitting in landfills across the globe. For scale, that amount of plastic weighs approximately 35,000 times more than the whole Empire State Building."
Aha..just the matter of forcing obsolescence in order to raise profits in modern economy. Please excercise only on yourself, not on me.
Another thing, it may be useless from your point of view. But most of the people are using phone just for calling - strange isn't it :) ?
Sail boat towing other boats (similar loa) should attach towing line close to her center of effort. Think like attaching towing line to the mast foot. Not on the stern. Not an easy task to do. That's why many sailors just use any stern cleat.
And the towed boat should attach towing line not to the bow, but also to the center of effort. Then both boats can manouver.
I also lost rudder blade, on the 10m sailboat, in the middle of Adriatic sea, 2005, during regatta, in 35kt NE wind and 3m waves. Not possible to steer anyhow. Tryed to improvize rudder, but we almost lost a crewman. We were on 2nd reef already. SAR came. Since there was no rudder on my boat, attaching towing line to bow was only option. My towed sailboat course was changing +-30 degrees every few minutes, and finally towing line broke loose because of the forestay chaffing.
