Off the shelf retail store screw-in LED and CFL bulb comparisons

PCBuds · Nov 4, 2019

Well, I just bought these.

And this.

I'm gonna have to work on my "driver" because I need about 19.5 V.
(the Meanwell is expensive)

And I managed to put 120 V to the test led using a bridge rectifier.

No resistor. No circuit board.

And it works fine.

I don't know what that stupid resistor does?

I might be overdriving my SIL now but I don't care if I get 1000 hours instead of 20,000.

PCBuds · Nov 4, 2019

StillOvergrowin said:
That's pretty much how I envisioned it. And beside that, I think the overall net gain in heat dissipation from removing the globe has a much larger impact than a little silicone on the ceramic.

I think someone should touch (or solder) those two prongs together and see what happens.
(don't do it while it's on)

You might pop a fuse or kill the bulb though.

ScrogMonster · Nov 4, 2019

PCBuds said:
Can you tell me what bulb that is?

I want to buy one for experimentation purposes.

(I hope it's not $40 here in Canada ��. Lol)

These are what I use. I been getting from costco at only 3.99 per 4pack. There is an electric company instant rebate that saves at least $6 per pack I think or maybe more. Maybe $10. I really should stock way up on them probably but I don't really have the money to blow and I dont need more ATM sooo... Meh.

Edit - (I didn't even realize they were dimmable until after I posted this...)

PCBuds · Nov 4, 2019

They're 120 V right?

You don't live in Europe do you?

StillOvergrowin · Nov 4, 2019

PCBuds said:
...

In electronics class, we were told to look at the symbol as a speaker and the sound from a speaker would come out on the left because current flows from negative to positive because electrons are negatively charged.

In physics class, we were told to look at the symbol as an arrow because the current would flow from positive to negative. The physicists were the ones who discovered that electrons were negatively charged. But what is a positive amount of negative things?

It gets confusing.

We had the right-hand rule in one class and the left-hand rule in the other.

Thank you for that. It explains why a lot of seemingly simply things were so hard for different people to explain.
Especially ohms and "resistance"

The ohms with regards to stereo speakers as an example.

Is 'resistance' more like a truck pulling a heavy load, or more like water hitting a heavy weight it has to move?

Almost comes down to pulling vs, pushing it seems.

PCBuds · Nov 4, 2019

ScrogMonster said:
Edit - (I didn't even realize they were damnable until after I posted this...)

They're dimmable and damnable.
They might kill you. :biggrin:

StillOvergrowin · Nov 4, 2019

PCBuds said:
I've been thinking about this.

https://postimg.cc/Q9W1CP0D View Image

If I'm right about that resistor being used as a thermistor to regulate current flow then if it gets hotter because it can't breathe as good, then the bulb might be dimmer?

Bypassing (shorting out) that resistor might crank up the brightness to full snort ?

Your bulbs are different than mine and I can't bypass my resistor without wrecking the base so I can't screw it back in.

I'm not familiar with your bulbs circuits, so bypassing it might short out the bulb?&

It might just transfer the heat to the larger heat sink...

But I'm not trying to drill down to far into the electric engineering aspect.
I just want screw and play. Err... plug and play sounds better.

StillOvergrowin · Nov 4, 2019

ScrogMonster said:
Yeah, this was said before, I think by you, I've been more careful to use only enough silicone to shock proof it, just on the very top, just incase. I only smothered one or two of my bulbs like the one in that photo.

Your Widow is looking very pretty bud.

Here is some of that GG4 in a jar. Such a treat to smoke very creamy/yummy smoke and relaxing effect.

View Image

Can't see any bud in that picture. Just a bunch of crystal white snow looking stuff all clogging up the shot.

StillOvergrowin · Nov 4, 2019

PCBuds said:
I'm gonna bypass my resistor but I'm really stoned and drunk right now and I don't want to blow up.

Make sure you film it and post the video colin furze style. :biggrin:

PCBuds · Nov 4, 2019

StillOvergrowin said:
It might just transfer the heat to the larger heat sink...

Yea it does but what the hell does it do?

All I'm seeing is a waste of electricity making more heat?

If you remove that resistor from the circuit, by shorting it out, you don't have the power loss and probably more voltage to the LED segments making them brighter ?

PCBuds · Nov 4, 2019

StillOvergrowin said:
Make sure you film it and post the video colin furze style.

I was sober today and this is the LED segments being lit with 120 V DC with no resistor and just a capacitor to smooth out flashing.

The base is disconnected so I couldn't leave it lit for too long but I'm going to hook it up to a heat sink and let it run for a while.

The whole thing can breathe really good so thermal runaway may not be an issue?

(I don't know how to post a video)

PCBuds · Nov 4, 2019

Maybe it's a "filter" to help stop the flickering?

Hookahhead · Nov 4, 2019

PCBuds said:
Maybe it's a "filter" to help stop the flickering?

I think it’s a listening device for the government.

:whee:

PCBuds · Nov 4, 2019

Hookahhead said:
I think it’s a listening device for the government.

That's probably it!

Luckily, cannabis is legal in Canada now, so I don't care. :woohoo:

repuk · Nov 4, 2019

By the shape and application I'd say is an inductor.

But being as easy as using SILs straight out of the box I'd just use them straight away...

PCBuds · Nov 4, 2019

It's just a 10-ohm resistor with heat resistant "tubing" around it.

I'm going to leave the built-in driver and all the components alone and mount 5-6 on my cookie sheet.

I'm aiming for a 50-watt low profile overhead light.
It's more of an art project than a science one.

PCBuds · Nov 4, 2019

I noticed that this board has LEDs #7 & #8 replaced with LED #17.

Making it a little bit brighter than the original design.

PCBuds · Nov 4, 2019

The same bulb by the same company.

I like the one on the right. It's bigger and spreads the segments out more.

PCBuds · Nov 4, 2019

My White Widow is getting close to harvest.

PCBuds · Nov 4, 2019

I just thought of something.

Maybe that resistor is used to warm up the bulb a bit for when it's being used outdoors in the winter?

I should put a bulb in the freezer and see if it is dimmer when I first turn it on.

Off the shelf retail store screw-in LED and CFL bulb comparisons

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