Difference between revisions of "News/2010-09-07"
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| + | === Variable PSU === | ||
| + | |||
The broken power supply is now fixed. I think the failure may have been due to a tear in the silicone sleeve insulating the power switching transistors, resulting in them both blowing and shorting the mains. May be worth replacing this in both supplies with something untearable. | The broken power supply is now fixed. I think the failure may have been due to a tear in the silicone sleeve insulating the power switching transistors, resulting in them both blowing and shorting the mains. May be worth replacing this in both supplies with something untearable. | ||
| − | The welder that's been donated works, has a big spool of wire and a regulator for disposable bottles. We only need some more gas and the PPE (most notably a face shield) to make it usable. Disposable gas bottles are OK to start with but you need to pretty well supply your own for each job as they won't last long. If anyone has some scrap steel for practicing on, please bring some bits along. Not galvanised steel, please. | + | === Welder === |
| + | The welder that's been donated works, has a big spool of wire and a regulator for disposable bottles. We only need some more gas and the PPE (most notably a face shield) to make it usable. | ||
| + | |||
| + | Disposable gas bottles are OK to start with but you need to pretty well supply your own for each job as they won't last long. If anyone has some scrap steel for practicing on, please bring some bits along. Not galvanised steel, please. | ||
| + | |||
| + | === Biohacking === | ||
| + | We apparently now own a £300 electronic pipette. | ||
Revision as of 00:27, 14 September 2010
Variable PSU
The broken power supply is now fixed. I think the failure may have been due to a tear in the silicone sleeve insulating the power switching transistors, resulting in them both blowing and shorting the mains. May be worth replacing this in both supplies with something untearable.
Welder
The welder that's been donated works, has a big spool of wire and a regulator for disposable bottles. We only need some more gas and the PPE (most notably a face shield) to make it usable.
Disposable gas bottles are OK to start with but you need to pretty well supply your own for each job as they won't last long. If anyone has some scrap steel for practicing on, please bring some bits along. Not galvanised steel, please.
Biohacking
We apparently now own a £300 electronic pipette.