Pazzy

In between coats of paint, I worked on fixing the metal tremolo cover. As you can see above, it's being held down by a washer, since it is in fact cracked completely across, as seen here: In fact, if you look closely at the first photo, you will see that a lot of the surface chrome close to that area has cracked too and is only held in place by magic or something. Anyway, firstly I bent and hammered it down to something resembling flat: Then I roughed the surface of it near the crack with a view to trying to solder it together. Remember that the chrome plating in this area was close to flaking off anyway. I figured this was also the least intrusive way to join it without discolouring the surrounding chrome too much. However, I could not get the solder to stick to the metal cover, so tried a different route. First of all, I set about cutting a piece of aluminium into the shape of a somewhat oblong washer. Just as I was almost finished, I discovered I had a much thinner piece of alum...

As a guide, a one-inch reed switch with 40 turns reliably switched on with the current flowing through a 150-watt lamp (approx. 625 mA) but larger reeds may require more turns. If the master appliance draws less current (which is unlikely with power tools) more turns will be required. The reed switch is used to switch on transistor T1 which in turn switches the relay RE1 and powers the slave appliance. Since reed switches have a low mechanical inertia, they have little difficulty in following the fluctuations of the magnetic field due to the alternating current in the coil and this means that they will switch on and off at 100 Hz. Mains Slave Switcher II Circuit diagram: Mains Slave Switcher II Circuit Diagram C3 is therefore fitted to slow down the transistor response and keep the relay energised during the mains zero crossings when the current drawn by the appliance falls to zero and the reed switch opens. C1 drops the mains voltage to about 15 V (determined by zener diode D1) and t...

Disclaimer: streamPowers.blogspot.com is not responsible for any damage caused to your devices due to any information found on this site.   Please use this knowledge at your own risk. About a year ago I came across an interesting article in Make Magazine about a guy who took his Fossil Wrist PDA and installed an Apple II emulator on it.   He was able to load many of the Apple II software titles and run them at regular speed.   The thought of having a fully functioning Apple computer on my wrist excited me enough to give it a try.      People that are attempting to do this should be familiar with the Palm OS as well as using jot or Graffiti 2 as an input method.   The Fossil Wrist PDA (now discontinued) features a tiny gray 160×160 pixel screen, the same number of pixels as most palm devices up to Palm III, with 16 shades of gray. The watch runs Palm OS 4.1 with its 66MHz processor and has a tiny stylus hidden in the watch clasp. It is able to ca...