General > General Technical Chat
UK power grid situation!!
james_s:
It's probably largely to do with the fact that the voltage there is double what it is here. Starting I think sometime in the 80s miniature lights required crimped terminals in the sockets, heavier wires and fused plugs. I have some from the 70s that have very thin wires which is nice because they're much lighter and more flexible, but they are fragile and the wires are only wrapped around the metal plates pressed into the sockets and the plugs are not fused. Throughout the incandescent era there were C7 and C9 size 120V bulbs in parallel or miniature strings with groups of 2.5, 3.5, 6 or 12V bulbs in series powered directly from 120V. I've never seen an incandescent set with a transformer in this part of the world.
TimFox:
I grew up with the 120 V (actually, this was many years ago at 110 or 117 V) bulbs in parallel, but 40 years ago it was the series-parallel combination of lower-voltage smaller incandescent bulbs connected to 120 V, 60 Hz. The smaller bulbs were a pain to replace, if I remember right. Recently, my Christmas bulbs are LEDs with a small adapter supplied by the manufacturer.
The colored strings are a bit too saturated for my taste, but I hide them in the greenery.
RJSV:
james_s, regarding comments on LED flicker:
Scope showing approx. 5 Usec. repeat periods, or about 233 khz, if the LED is using a buck converter (oscillator with inductor coil to boost voltage).
I get the 'dots' lingering visual effects, especially in side vision. But, the timing seems wrong, when reconciled with speed of (head) movement...the oscillator rate seems more like 3khz or something, a puzzle.
Do you have any info, on Manufacturer, model ?
themadhippy:
--- Quote ---Sure sounds like you're one of the usual complainers that needs batting down.... being that lot 20 does not change existing installs, restricts the market for new installs, and there are new storage heaters on the market with LOT20 compliance.
So, still wanting to dream of the past?
--- End quote ---
I'm fully aware what lot 20 is and its scope,I'm also aware ,from real life figures ,not reading random numbers in a brochure that a like for like lot 20 compliment heater will actual consume MORE energy than these ancient heaters
Someone:
--- Quote from: themadhippy on December 07, 2022, 12:23:32 am ---
--- Quote from: Someone on December 06, 2022, 03:53:21 am ---
--- Quote from: themadhippy on December 06, 2022, 03:11:20 am ---
--- Quote ---Most of these renewables provide intermittent power, meaning they generate electricity when the wind is blowing or the sun is shining
--- End quote ---
so something which stores the energy when available would be ideal,like the box of bricks currently heating this place.thankfully there not lot 20 compliant.
--- End quote ---
Sure sounds like you're one of the usual complainers that needs batting down.... being that lot 20 does not change existing installs, restricts the market for new installs, and there are new storage heaters on the market with LOT20 compliance.
So, still wanting to dream of the past?
--- End quote ---
I'm fully aware what lot 20 is and its scope,I'm also aware ,from real life figures ,not reading random numbers in a brochure that a like for like lot 20 compliment heater will actual consume MORE energy than these ancient heaters
--- End quote ---
Talking about resistive heating (off peak electricity heating into bricks), how can consuming more power result in less heating ? ? ? all the energy ends up as heat with almost perfect unity.
or more accurately if you come back and say that there is no impediment to buying another storage heater, then what on earth were you saying originally (quoted above) ? What is better about the old heaters that you cannot buy? Resistive heating dump into a brick is pretty much impossible to screw up.
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