Mullard – The Blackburn Thermionic Valve (Vacuum Tube) Factory

Founded by Captain Stanley Mullard the Mullard Valve company became one of the major names in the manufacture of thermionic valves, or vacuum tubes as our American cousins called them. The Mullard name also became synonymous with the manufacture of cathode ray tubes used in television sets and they made other components such as capacitors too. The giant Dutch Phillips company was […]

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Cheap USB Flash Drives

USB flash drives are widely available and over the years memory capacities have grown and prices have fallen. I was in a Tesco supermarket recently and noticed on the aisle end display of accessories that they had an offer on USB flash drives that made them look reasonably priced for a major chain store. Having said that I reflected that […]

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How To Wire A Mains Plug

Back in the not too distant past when you bought a new television or toaster it would come without a plug on the end of the mains cable. Some retailers might fit one for you if you were lucky but normally you had to buy a plug and fit it yourself. Over the years I have come across many badly […]

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So who makes Polaroid televisions?

A couple of years ago I noticed Polaroid branded television sets on sale on the shelves of my local ASDA supermarket. ASDA also sell other domestic electronic goods and accessories under the Polaroid brand name too. Now the Polaroid company founded in 1937 by Edwin Land that made polarised sunglasses and the Polaroid instant film camera went bankrupt in 2001 […]

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Electrolytic capacitors, the weak spot in modern consumer electronic products?

These days modern consumer electronics products tend to be pretty damn reliable, but an online video I watched recently reminded me that the one component that we often first suspect when a failure occurs is the good old aluminium electrolytic capacitor. The video I was watching was on the blog of Australian electronic engineer Dave Jones. Dave was looking at […]

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So here goes ..

So welcome to Bob’s Shack. Time will tell what it grows into. I have some ideas, and it will focus on electrical stuff, but no doubt as it grows my initial thoughts will be overtaken by what actually seems to work. To start us off here is a picture of an old style light bulb. It isn’t lit up at […]

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