Power Management, Chapter 8: Power Management ICs | 19mm Momentary Push Button

From the top of the Sony Alpha A33 camera body, you can just see the stereo microphones, located on either side of the flash hot shoe on the sides of the viewfinder / popup flash housing, as well as the three hole grille the speaker (above the Finder/LCD button). At the top of the handgrip is the popular combination of a shutter button surrounded by a power switch, making it easy to quickly power on the camera and snap a picture with one finger. The Finder / LCD button allows the A33 to be manually switched between shooting with the electronic viewfinder or the rear LCD panel. Upper right of this is a D-Range button that provides access to Dynamic Range Optimizer and High Dynamic Range shooting options.

The Sony A33 offers a lot of control for shooting contrasty subjects. Dynamic Range Optimizer (DRO) adjusts contrast and brightness to optimize the camera’s use of available dynamic range. Auto HDR modes use three quick shots to cover an amazing tonal range. (The shot on the right represents the maximum range of 6 EV.)

My testimony : 230VAC doesn’t kill if you’re lucky. Lots of people died on 230VAC (Claude François….)

In the next part of this article we will venture inside some of the typical devices you will be working with to examine the individual hazards and techniques you might encounter.

On top of this, if we halve the current, then we can also use thinner and therefor cheaper wires in our power distribution system.

Growing up in a family surrounded by electricians, we were always discussing codes and theory around the house. Much of what I know came second-hand through my dad but also through Mike Holt, a well-known electrical author and instructor I now have the privilege of calling a friend.

Creepage to the mounting screws is one issue and that fuse crowed by traces at mains potential is just bad design.

Ah, right you are. I’m out of date — I last dealt with UK power in 1981, and have not been back since. Thanks for the update.

Dunning-Kruger effect. It’s impossible to correctly estimate your own stupidity. This is the cause behind half of everything wrong in the world. The other half is psychopaths in positions of power.

I buy Crydom SSRs from Digikey. I pay the $40-$50 bucks, I use big assed heat sinks, and I sleep like a baby.

Potential starting relays consist of a high resistance coil and a set of normally closed contacts. The coil is wired between terminals 2 and 5, with the contacts between terminals 1 and 2.

As always, in terms of refinement, petrol or diesel drivers need to recalibrate their minds, not least because the near silence (bar wind noise) below 2000rpm stands in contrast to the engine noise that intrudes thereafter. At a cruise the peace is notable, while if you push on the arrival of engine noise is a momentary surprise rather than a permanent irritation. A sub-8.0sec 0-62mph time underlines that this is a reasonably pacy hatch too.