Getting to grips with Sony audio and the TA-F444ESX Sony’s video cameras and television receivers have always been held in high esteem, along with their professional series recorders and mixing desks. In the 1980s they were the first to release a CD player to the consumer market. Nothing unique from this highly innovative company. Then…
Switched Mode Power Supplies – the Heart and Soul of Modern day electronics The Switching Power Supply Unit – Introduction In 1977, during a course at Cape Technikon, students were introduced to switching power supplies. These devices were relatively new at that time. The Switched Mode Power Supply Unit (SMPSU or SMPS) was being designed…
Inverters Vs UPS Why select an inverter or UPS – what is actually the difference? Interesting question which no doubt baffles many people that really don’t give a hoot.
Where to find transistor equivalents? Restoring old gear can be a nightmare when it comes to some of the more obscure transistor types, and a pretty expensive exercise as well. Transistor equivalents for substitution is often a necessity when repairing vintage gear. This applies equally well to silicon devices and not just Germanium. Years back…
Class G and H Audio Amplifiers One design that has been out for eons and still catches us off guard is the rail shifting Class G or class H boost supply amplifier. Most purists agree that this concept is ideal for PA work but not high fidelity audio. To a certain degree I must agree…
Cheaper alternatives for supplying power to projects Let’s face it, EI and toroidal transformers break the budget. Going back a few decades I always recall my own projects being run from batteries. Family would give me their faulty gear to strip and if I was lucky I could get away with a transformer or two.…
Some links to car audio circuits If you read the previous article on how quickly we can become deaf through negligence or just plain stupidity (like this scribe) I have managed to get some gems together for the DIY types. Firstly, for those wanting to repair car amplifiers, Perry Babin has done an incredible job…
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