Inside a new C7 or E12 LED Christmas light
bigclivedotcom 18:04
49,436 views · 3,383 likes Watch on YouTube ↗
These bulbs literally consume less than a tenth of the power of the tungsten version, and the circuitry is very simple, with a significant amount of the power dissipated across the LEDs and the series resistors used well within their rating.
The low current also means that the LED chips should last a good length of time. Especially as they seem to have a strong similarity to the ones found in high power lights, but run at a fraction of the current (2.7mA)
I'd expect the 120V version to be even more efficient, as less power will be dropped across the resistors.
These lights do not have smoothing, but have very low visual shimmer.
I stripped the wire back and did a flame test, and I think the wire is copper coated aluminium. That doesn't seem a great idea for an IDC (Insulation Displacement) connection. Fortunately the contact current is just a few milliamps. But a lamp holder short circuit could pose issues.
I got these from this AliExpress listing:-
https://www.aliexpress.com/item/1005006258542092.html
These are just the bulbs, and they are available in either mixed colour sets, or a single colour.
There is usually a choice of 120V or 220-240V.
The cost is about $10 plus local taxes for a box of 25.
The E12 festoon is also available from the same seller, with a set of generic bulbs.
Searching for keywords like 25pcs C7 E12 Christmas light will find many similar listings, including in white.
If buying from AliExpress, I strongly recommend against giving them card details. Instead use PayPal as an extra layer of security.
Let me know if you have had issues with these small holders tracking and shorting out due to water ingress. They're not normally used outdoors in the UK, but their abundance on the ecommerce sites means they are appearing a lot more.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
The low current also means that the LED chips should last a good length of time. Especially as they seem to have a strong similarity to the ones found in high power lights, but run at a fraction of the current (2.7mA)
I'd expect the 120V version to be even more efficient, as less power will be dropped across the resistors.
These lights do not have smoothing, but have very low visual shimmer.
I stripped the wire back and did a flame test, and I think the wire is copper coated aluminium. That doesn't seem a great idea for an IDC (Insulation Displacement) connection. Fortunately the contact current is just a few milliamps. But a lamp holder short circuit could pose issues.
I got these from this AliExpress listing:-
https://www.aliexpress.com/item/1005006258542092.html
These are just the bulbs, and they are available in either mixed colour sets, or a single colour.
There is usually a choice of 120V or 220-240V.
The cost is about $10 plus local taxes for a box of 25.
The E12 festoon is also available from the same seller, with a set of generic bulbs.
Searching for keywords like 25pcs C7 E12 Christmas light will find many similar listings, including in white.
If buying from AliExpress, I strongly recommend against giving them card details. Instead use PayPal as an extra layer of security.
Let me know if you have had issues with these small holders tracking and shorting out due to water ingress. They're not normally used outdoors in the UK, but their abundance on the ecommerce sites means they are appearing a lot more.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
Category (YouTube): Science & Technology
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