I had a request for some specialist RF dual gate fets that are no longer manufactured in a through-hole package. BF998 is currently available in SOT-143 package. See the datasheet.
And check out the photo:
If you are looking for a cheap hour of EE related entertainment you should check out The Amp Hour, weekly podcast.
On Saturday afternoon Ii was granted the opportunity to visit the “Sir Harold Hillier Gardens” near Romsey.
I had a great afternoon playing with my camera and new macro lens (Canon 100mm F/2.8L Macro). See the results on the gallery.
If you like what you see please contact me an I can either get you some good quality prints or send you the source file to get printed yourself.
Please take great care when working with mains power, electric shocks will hurt and can easily kill.
How my JGS516 was revived, the verbose version:
Last week my main network switch decided to stop working at random.
Sadly the Netgear JGS516 was well out of its warranty so there was no chance of having it repaired by Netgear.
Imagescaler is a plugin that I use for wordpress. Imagescaler’s function is to shrink images and save them so that the main page of my blog does not have 6MB jpeg images eating up all the bandwidth.
Sadly on a few occasions imagescaler has done bad things to my pictures, including replacing the PNG transparency of my graphs with blackness. You might have also noticed weird colours in my PCB exports, this again was due to imagescaler.
JimBowen finally managed to get over his episode of broken HSS drills and has managed to fit some heaters into the block of aluminium which will form the hotplate.
Just uploaded a new gallery from my photography expedition in the snow this morning.
Plenty of sheep in the field across the road so they got victimised too!
Link to gallery
Earlier this week me and JimBowen were working on our joint project. We were experimenting with phase angle control for dimming a 60W incandescent lamp (our final target is a heater module).
As part of a joint project with my cohort in hax, Jimbowen we require some high temperature sensing. I have previously used the Maxim/Dallas DS18b20 series digital temperature sensors for environmental monitors but these are only capable of sensing within the range of -40C to +125C; we need to be able to monitor soldering temperatures over 200C.
After some advice from a friend I have redesigned the PCB for this project.
All traces and copper have been moved into the board to allow for tolerance in board separation.
Both top and bottom layers are now GND with Vcc being routed as a track on the top layer, previously top layer was Vcc and bottom layer GND.
A second switch has appeared to allow for network configuration, details as yet undecided.. must wait until I have hardware before thinking too hard on this.
Traces for the crystal U12 have been dramatically shortened (better now Andy?)
Thanks to Andy for finding me some connectors that will allow two modules to be stacked with no gaps, this will make for some very neat tiling options.