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David W Knight
Ottery St Mary,
Devon, UK.
DWK in his half-dark period
Fixed vacuum capacitor
Electrical Theory,
Data Analysis,
Components and Materials,
Inductors and transformers.

Coil resonance experiments
Low-pressure gas ionised by the electric field of a resonating inductor. see: coil resonance experiments.

Precision RF bridge
Antennas,
Impedance matching 
RF bridges:
HF power transmission theory and practice
.


e-bike e-bike
Pedelec
EAPC
Coverting a bike into an e-bike
Workshop
Low res Hg spectrum
UV-Visible-IR spectrometer
Demodulators and signal rectifiers
Demodulators and
sigal rectifiers
Gas discharge tubes
Gas Discharge Tubes,
spark gaps & thyratrons
Frequency display
Digital Frequency
Readout
Nixie tubes
Nixie and other digital indicator tubes.
Valves
Andy Cowley's
Valve Pages

(see also: Introduction)
Kenwood TS430s
Commercial radio equipment. Notes & mods.
Racal RA17
Racal RA17:
Receivers,
Adapters, etc.
Optics & Photography
(General and underwater)
SGC230
Using the SGC 230 'Smartuner' in a balanced antenna configuration.
New sewage treatment regulations for houses not on mains drainage
Swimming pool engineering
 
Links
Web Links -
Radio, Electronics & general.

Last uploaded: 2021-June-15th (4346 files, 399 MB)
Neon tube

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