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does the signal actually come from Droitwich? I had a vague feeling that there was another 198 LW tx in Cumbria to stretch up north. but maybe the switcher signals are only on the droitwich transmitter. seems a bit of a long shot especially in daylight.

Thanks all for input, I guess I will have to rig something up to automatically log the times, shouldnt be too hard.

Used to be... used to be.... an upstanding uncorruptible chap who knew the district, knew everyone, read the meters, kept it safe, provided value for money. Like the resident GPO man. all gone now. now they spend a fortune sending clueless young numpties out on daytrips with vans via roro ferry...

surely the teleswitches are addressed by group, then there can be (at least) delays within that group. Probably the groups are deployed geographically. eg, group A switches for Orkney Islands. Group B for shetland. Group C for Caithness, etc etc. Then the LW signal can enable group A. Group A...

possibly I have misused the technical term dither there.

yes I can see that makes some kinda sense. My first thought is that said random delay would have to be within certain parameters in order for the whole system to work.... is not the underlying concept here to make use of the surplus coulombs which are only surplus within certain defined periods...

always wondered how they got around that, i thought they grouped teleswitches together so that you could switch manageable groups in/out.... whatever, there must be a way of addressing teleswitches at least by groups, possibly individually? if so then it seems not unlikely that there is...

really?! the meter & teleswitch is on a semi-outdoors porch, I used to live there and you never hear it. I rigged up a lamp on the heating supply so that the current occupant would be able to know when the circuit energised, but... really? in his world, he is unable to sit there all day watching...

installed this recently. anyone had any similar issues?

How can I find out what time periods this teleswitch should operate on? there must be some central control for the various teleswitch code groups....? attached is the somewhat unhelpful guide from Bulb energy (the present supplier for this property), I seriously cant believe that they are...

Property with "total heating total control" installation from back along. I believe that the heating (4 x old mass storage + immersion) is controlled by a radio teleswitch; I believe it relies on a signal embedded in the 198kHz service which is then decoded inside the teleswitch module. anyway...

Anyone know how Bender LIM's work in some depth? this is what they give on their datasheets: "A measuring current in the μA range is superimposed onto the system which is recorded and evaluated by a microprocessor-controlled measuring circuit. The measuring time is dependent on the selected...

quite a high volume of flannel there. aptsys, can you expand on the PFC issues please? JohnW2, regarding the UPS's; indeed when the UPS is called on to provide backup power its inverter runs.... but I don't think the inverter runs when line power is OK (do they?) these UPS units are clearly...

when using 12V or 24VDC inverters (or indeed inexpensive inverter petrol generators) to power standard 240VAC computer equipment, what are the implications of the noise inherent in such inverters? people talk about electrical noise from inverters, and "dirty power", is this really a thing?

a simple resistor eh? what about a complicated resistor? Guess this must be something like that. a pressure-varying resistor I suppose. don't they get a bit hot?

I opened up a 1970s vintage sewing machine treadle the other day expecting to find some triac type chopper controller but instead found a weird plunger type of thing with what looks like carbon rods either side. what's the mechanism? I guess I should post a pic but its in the shed and I cant...

I am considering to refresh an existing woodburning/multifuel stove "hearth". the stove flue exits the back of the stove unit and proceeds horizontally into the vertical wall of the room. the wall in this area is some sort of fireproof board (something slightly different to plasterboard...

About to take on a project in Ealing, London what should I expect to pay hourly for domestic electrician? cheers

is this (attached schematic) "phase converter" drawing correct? I have attempted to draw out the circuit of a machine that I have. I think it is a static phase converter, which as far as I can make out is essentially a start/run capacitor system for getting a 3-ph motor turning, at which point...

is there such a thing? a pal of mine thinks that he used to have a PTZ speedome camera which had some sort of ring assembly just above the perspex dome. this ring assembly could motion-trigger, and then the camera would automatically slew to the angle at which the motion was detected. he may be...