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A.H.A.R.S.
CONSTRUCTION NIGHT
November 15, 2007.
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Members were given a project to construct: the Gizzmo 1.
According to its designer (Graham Dicker, VK5ZFZ), the Gizzmo1
© produces:
1. Two x the dc voltage input + (1 x negative), ideal to power op amps
or produce higher output voltages than normally available
2. second use is as an inductance bridge to measure inductance from
2-200 henries
3. a variable frequency squarewave generator from 10Hz-1500 Hz for
testing purposes.
4. fourth use to drive a 2n3055 and reverse connected transformer as a
12v DC to 240v ac inverter for portable use.
5. plus many more ideas that people will come up with.
Many thanks to:
Graham for running the project, creating 65 complete kits, with
circuit diagrams, and providing help and explanations to club members as
their constructions progressed.
Also thanks to Terry Knowles, of Force Electronics at Holden
Hill, who made up the PCB's.
(Click on any photo for an enlargement.)
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| Jeanne with her completed
and working Gizzmo. |
One of the four circuit diagrams
provided by Graham. |
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| Jeanne, with help from
Keith (the third hand), putting the finishing touches to the
project. |
Typical workstation.
The use of a desk lamp is most helpful, especially in our
meeting hall.
Most members also brought their own power boards, soldering
gear, and tools.
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Many thanks to
Christine, VK5CTY, for the above photos.
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| Old hand Rob, (VK5RG) at
his station. |
Some say that all hams look much
alike.....
Peter (VK5APR) and John (VK5EMI). |
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| Leith (VK5QH), another old
hand, grappling with the project. |
Three hopefuls on the job. |
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Frank VK5EXT,
and Barry (VK5ZBQ). |
Graham, (VK5GW), putting the finishing
touches to his project. |
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| Lyle (VK5ZNB) and Don,
(VK5ADD) puzzling over the complexities of the job. |
Jeanne (VK5JQ)
and Keith (VK5OQ) on the job.
One or two more projects like this and Jeanne will be showing
Keith how! |
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| Soldering expert Jim,
VK5JST, showing us how to solder a table. |
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| Many thanks to
David (VK5AMK) for these photos. |
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