On 9/15/2019 1:32 PM, Club Internet wrote:
Rick,
Thanks for this information. Actually the technology of C18 is not specified in
the manual.
Why should it necessarily be « foil » type and metallized?
Is « foil » type same as « film » type?
Of course the « mass » needs to be there (=> 3D printing services)
Best
Gilles.
See:
https://www.sbelectronics.com/products/application-notes/why-specify-filmfoil-capacitors/
Expanding on this:
(1) the 10811 oven integrator has a large resistor
in series with the capacitor, so there might not be enough available
current to vaporize shorts.
(2) shorting-and-clearing puts a glitch into the integrator which
creates a thermal disturbance
(3) the 10811 design engineers, and their boss (who hired me into HP)
were extremely methodical and I can assure you that no decision was
made by accident. Keep that in mind when reverse engineering the
10811.
Foil types basically have 1/2 the capacitance of the same size in
metallized.
End of lesson :-)
Rick N6RK
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