Science & Technology Archives

My Broadband Hub & Phone Have A Backup Battery

To guard against power cuts this winter I have given my Broadband Hub and fibre to ethernet interface (ONT) a 3-hour Backup Battery.
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Published on:

5 December 2022

CATEGORIES:

Computers, Electrical/Electronic, Internet, Science & Technology, Uncategorised

TAGS:

backup, battery, broadband, co-ax, fibre, hub, jack, ONT, phone, plug, power, receptacle, router, TalentCell, unit, Wi-Fi
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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Published on:

17 May 2022

CATEGORIES:

Current, Electrical/Electronic, Science & Technology, Uncategorised

TAGS:

acrylic, ceramic, electrolytic, frequency, function generator, oscillator, potentiometer, resistor, signal, sinewave, soldering, square wave, triangular wave, wire cutters, XR2206
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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Published on:

23 April 2022

CATEGORIES:

Current, Electrical/Electronic, Science & Technology

TAGS:

acrylic, ceramic, electrolytic, frequency, function generator, Header, oscillator, potentiometer, resistor, sinewave, soldering, square wave, triangular wave, wire cutters, XR2206
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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Published on:

9 February 2021

CATEGORIES:

Cooking, Current, Electrical Appliances, Electrical/Electronic, Science & Technology

TAGS:

bezel, Gorilla Tape, inverter, microwave, Sticky Stuff Remover, TORX
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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Published on:

21 January 2021

CATEGORIES:

Current, Electrical/Electronic, Mobile Phones, Physics, Science & Technology, TV

TAGS:

aerial, Angstroms, antenna, broadcast, electromagnetic, energy, frequency, LASER, Permeability, Permittivity, power, radiation, radio, spectrum, transmitter, wavelength, waves
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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Published on:

2 September 2020

CATEGORIES:

Current, Electrical/Electronic, Mathematics, Mobile Phones, Physics, Science & Technology

TAGS:

chart, function, graph, linear, non-linear, proportion, square
14 Pin & 15 Pin D Connectors on VGA Cables

Introduction I wanted to know what the difference is between VGA cables with 14 pin and 15 “D” connectors. I found the answer on the Instructables site/forum. The info I needed was contained in a reply to a query by onrust circa 2010.
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Published on:

22 January 2020

CATEGORIES:

Computers, Current, Hardware

TAGS:

ATI 9800, cable, D connector, LCD, Pioneer, Plasma, TV, VGA
Extending The Door Bell In My Home

Post Description I’ve been extending the door bell in my home so it can be heard in the house extension and shed. It’s been done by incorporating wireless technology, while retaining my original 1980s “DING-DONG” door chime which had a great sound and an illuminated bell push.
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Published on:

29 August 2019

CATEGORIES:

Current, Do It Yourself, Electrical, Electrical/Electronic, In The Home

TAGS:

bell, bell push, bridge rectifier, capacitor, chime, CR2032, Friedland, incandescent lamp, lamp, LED, relay, solenoid, strip board, UNI-COM, Veroboard
Converting A Bell Push Light To LEDs

Post Description How I replaced an incandescent bell push light with LEDs. The bell push operates a door chime powered by AC from a bell transformer.
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Published on:

14 August 2019

CATEGORIES:

Current, Do It Yourself, Electrical, Electrical/Electronic, In The Home

TAGS:

bell, bell push, chime, festoon, incandescent, lamp, LED, light, solenoid
Cooling Fan Lubrication For An NVIDIA GeForce GTS240

Preface This post describes: My success at cooling fan lubrication on an NVIDIA GeForce GTS240 PC display adapter to silence it when it became noisy.
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Published on:

7 February 2019

CATEGORIES:

Computers, Current, Electrical/Electronic, Hardware

TAGS:

adapter, cleaning, display, GeForce, GTS240, heat sink, locktite, lubricant, lubricating, NVIDIA, oil, rotor, stator, watchmaker’s screwdrivers

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Helpful Colin

Category: Science & Technology

My Broadband Hub & Phone Have A Backup Battery

A Function Generator Built From A Kit Using An XR2206

XR2206 Function Generator Kit Improved Instructions

Microwave Inverter Repairs To The Door Button & Bezel

Radio Wave Power And How It Gets Reduced By Distance

An Explanation of Direct And Inverse Proportion

14 Pin & 15 Pin D Connectors on VGA Cables

Extending The Door Bell In My Home

Converting A Bell Push Light To LEDs

Cooling Fan Lubrication For An NVIDIA GeForce GTS240