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Changing A 3-Port Valve Actuator in A Central Heating System
Over time valve actuators may develop faults which are easily fixed by replacing them. I have just had to do that with the one in my central heating system. I last changed it on 12th December 2017, so, it had run for nearly five years without a fault.
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How To Vent Portable Air Conditioner Exhaust
I’ve been thinking of obtaining some air conditioning equipment for the last few years since 2018. But this year (2022), with exceptional heat forecast and my son taking similar action to cool his London flat, I went ahead and bought an AEG CHILLFLEX portable air conditioner.
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A Function Generator Built From A Kit Using An XR2206
Introduction This post covers some of the practicalities that have to be met when building a function generator (signal generator) using an XR2206CP Function Generator kit. I assume anyone building one of these kits has some electronic and soldering experience. The Kit Instructions I bought two of these kits and I could see immediately, when…
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XR2206 Function Generator Kit Improved Instructions
Introduction The XR2206 Function Generator Kit is available through various outlets at a selection of prices up to £13. I got one branded ARCELI via Amazon for £7.99. Having got one, I would advise getting the cheapest one you can. Just take into consideration the trustworthiness of the seller to be sure you get what…
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A Sturdy See-through Gate Keeps My Passage Protected
In 2016 I constructed a see-through gate to keep the public out of a passageway I share with a neighbour. I’ve written about it here so that anyone needing a similar see-through gate can take my ideas of how I built it and use them when building their own.
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Microwave Inverter Repairs To The Door Button & Bezel
The large rectangular button used for opening the door began protruding at the righthand end by about five millimetres. Obviously it had broken.
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Radio Wave Power And How It Gets Reduced By Distance
Introduction Some people are very concerned that radio wave power coming from radio transmitters’ antennas will harm people. In particular people are troubled by mobile phone masts causing long term health problems when they are near to their homes. I just want to make it clear how much a transmitter’s power diminishes as it spreads…
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An Explanation of Direct And Inverse Proportion
Introduction At least one of my other posts How Distance Reduces The Power of Radio Waves requires an understanding of mathematical proportionality. In particular it requires an understanding of Inverse Proportion. So I have written this article to try and clarify it. It gives an explanation of the two types of proportion, otherwise known as…
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Using A Milk Bottle As A Plant Pot Reservoir
Introduction If I water plant pots in dry weather the water runs over the top of the soil to the edge of them. Then, because the dry soil in the pot has shrunk, the water runs down a gap between the soil and the pot side. When the water gets to the bottom of the…
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