Whats Watts

[onionman79]

your videos are great!

[celtichongy]

As usual from AAFR, excellent subject matter and nicely explained !

[AllAmericanFiveRadio]

Thanks celtichongy

[joernone]

Rick,

When I install a resistor having too low of a wattage value, it instantly turns brown and goes poof. Yours took too long to fry. No fair. :-)

Great demo.

Regards,

John

[AllAmericanFiveRadio]

Thanks joernone

Hey John,

I remember those days. The smell of burning resistors is a familiar. Reminds of passed projects.

Regards,

Rick

[Ramiromasters]

I understood it the first time 100%

A video is worth ten thousand words!

[AllAmericanFiveRadio]

Thanks Ramiromasters

[clodester]

I find impedance and resistance hard to differentiate



[AllAmericanFiveRadio]

@clodester

Two videos back on my Channel is "Resistance Impedance Demo, The Basics "

[TheRecordman1949]

Thank you for the demonstration of the difference of the half watt and 10 watt resistor.

That helps clarify alot on how reisitors work.

[AllAmericanFiveRadio]

Thanks TheRecordman1949

I hope it helps.

[SpeakerFreak95]

cool video!

[AllAmericanFiveRadio]

Thanks SpeakerFreak95

[jenko701]

Is there any way to find the current in the circut with just Ohms law and the power formulas . if you do not know the resistance of the bulb .

[AllAmericanFiveRadio]

@jenko701 Yes, I used one of the Ohms Law calculators on the web. If your looking for current look for the answer for current first, then of those the one that you can plug in the Volts and Watts. And the answer is 0.33333, this is what I did first. Then I used the current to find the resistance of the bulb = 360. Plus the 100 = 460. Then I used the 460 and 10Watts to find the 67.8VAC. I'll upload this to my server and email you the links.

[jenko701]

Is the voltage on the bulb 60v or 120 v

[AllAmericanFiveRadio]

@jenko701

The bulb is a 120VAC@40W and I am using 60VAC to light it. Your next question will be, Why? At 120VAC@40W the bulb resistance is 360 Ohms. The 360 Ohms plus the 100 Ohms is 460 Ohms. I did not want to go over 10W in the circuit, so 460@10W = 67.8VAC. I decided just to use 60VAC. No chance of burning out the 10W resistor and the bulb is not to bright for the video.

[KissMeImPunk]

Is there a theoretical explanation of watts in a resistor?

[AllAmericanFiveRadio]

@KissMeImPunk

Yes, Ohms Law.

[1fornone]

"Resistance is futile"

[AllAmericanFiveRadio]

Thanks 1fornone

[cgillyard]

Thanks for the demonstration of the difference of the half watt and 10 watt resistors. I've always wondered if there differences between them. Now I see why.

[AllAmericanFiveRadio]

Thanks cgillyard

[orbiter8]

Great visible demo as always Rich.

Thanks

[AllAmericanFiveRadio]

Thanks orbiter8

[santiks]

how about type of resistor and signal transmission?

[AllAmericanFiveRadio]

@santiks

Elaborate a little more about Type of resistors and what about Signal Transmissions. I'm not sure what the it is you have a question about, resistors and transmissions.

[santiks]

@AllAmericanFiveRadio Well, many have said that type of resistor will affect audio signal in amp circuits. Many say carbon based resistors will give sweeter warmer sounds... while metal film resistors will give brighter sounds...

do you have any idea on this? thanks.

[AllAmericanFiveRadio]

@santiks

Carbon resistors have little inductance or capacitance. Depending on how the wire wound resistor is constructed it can have both inductance and capacitance between the windings.

[santiks]

@AllAmericanFiveRadio make us an oscilloscope video of it... hehe...

[radiofun232]

@santiks A Dutch radioamateur magazine (Electron, association: VERON) had tested the inductance from carbon film resistors (quite a few years ago...), because the carbon film is spiral-wound and thus can act as a coil. The result was that there was no inductance effect up to 300 MHz. See further the reaction from Allamericanfive radio on a question about inductance/resistance from a carbon film resistor.

[santiks]

@radiofun232 got any videos or links? =>

[k5cxo]

I got it! - Once a component leaks all of it's smoke out it will stop working.

just kidding and another great video

73's

Jim

[AllAmericanFiveRadio]

Thanks k5cxo

It has a good smoke test.

[manojsam79]

Nice video and explanation. thanks.

What if we use higher watt resister for a place where lower watt resister would also work fine?

[AllAmericanFiveRadio]

Thanks manojsam79

A higher watt resistor for a smaller watt resistor will work. Engineers do not do this because of the cost and the size of the component.