The requisite starting point for anything electronic – you won’t get much blinking, buzzing, or processing done without a power supply!
I liked Kip, for sure. Kip was fun and original. Becky and Bre, of course, too. Actually, they’re all pretty awesome people. Make has always chose wisely. But Collin is very methodical. And I believe: if you gave the man a chimp, he could probably teach it to solder…and maybe jam on theremin too.
Collin is a hero.
forgetting kipkay ;P
collin is awesome
@3:10 Super graphic explanation of the transformation and rectification process.
Am I the only one who thinks Colin is the lovechild of Agent Smith from The Matrix?
7:31 Warning: Obligatory xkcd quote (#643)…
“With great power comes great resistance times current squared”
I really like the song at 1:50.
So if you have a +15V terminal than if you were to connect a load between that terminal and the ground terminal, you would have a 15V drop across the load. If you were to connect a load between the -15V terminal and the GND terminal you would have a 15V drop across the load (with current flowing in the opposite direction. You could connect a load between -15V and 15V and get a voltage of 30V dropped across the load.
When people say something is 5V or 15V or -15V, these numbers are only meaningful with a ground reference. I can have 1000V at one terminal and 1015V at another terminal and the voltage between them would be the difference, 15V (Of course those two voltages are also in reference to ground). In a circuit, ground is the point to which you compare voltages in the circuit.
No, it is not illegal in Europe as it is sold as a kit and under EU laws, that makes the builder take the responsibility for safety. That is why some nixie clock kits that use high voltage are only sold pre-built as an option for countries outside the EU. For shipment inside the EU, only kits are supplied.
5:56 dubstep song XD
Its the power that kills you. The combination of Voltage and Current.
Why does this kit only use half-wave rectification? For the want of two diodes, the ripple could have been halved, and the transformer wouldn’t be as close to the saturation knee.
Also, irresponsible to suggest that electrical tape alone provides sufficient isolation from mains power. This product should have a case that requires a tool to open. In its current state, it would be illegal in Europe or Australia.
ok, 52 people electrocuted themselves )
He didn’t say he is usign those, he just wanted an example of a circuit that needs both positive and negative rails. You are right about the ‘newer’ rail-to-rail devices, they make life easier Another example would be high-end transistor audio amplifiers I guess, but they seem to favor much higher voltages, both positive and negative.
Collin Cunningham’s videos never cease to impress, entertain or enlighten. He speaks with a cadence that is both patient and lucid. Frankly: I could only wish everyone was as good a teacher as he is.
Yeah, OLD op amps use that voltage levels, but he could’ve used LM358, which use 5V voltage level and consume really low current, using a single little 9V battery and a 7805 linear voltage regulator to power the whole noise generator. =)
i think you have this all wrong, always play with high voltage!
whats the difference between negative and ground?
0 to 15+ will give positive 15v.
0 to 15- will give negative 15v.
15+ to 15- will give 30v
That is true, but amps are hard to measure through a human body. That’s why we used ohm’s law to calculate the maximum voltage you safely touch. It of course depends on the resistance of your skin. For dry skin, the legal maximum is 50V. Damp/wet skin will lower that to 25V. If you are submerged or soaking wet the maximum is 12V. But you are absolutely right that it is the current that kills you. That’s why the RCD in your house trips on differential current, not voltage.
My guess would be analog circuits. Operational amplifier circuits usually require these kinds of voltages.
Volts don’t kill, AMPS do
Where are the fuses?
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