UPDATES  &  INFORM OTHERS
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AUDIO-VISUAL
Economical PA Speaker Cables
Focused Sound Projection
Piezo Direct Input Unit
Economical Hearing Aid Loop
Loops from Headphone Sockets
Planning a Hearing Aid Loop
SCART Pinouts
Testing Hearing Aid Loops
 
RADIO
2 Band Dipole
Antenna gain explained
Cheating with Antenna Gain
Choosing the correct antenna
Converting ÁV & dBm
Emergency antenna
Lightning Protection: Why use it?
MW Reception Antennas
Simulcasting Techniques
Tuning Traps Without GDO
Wide Band HF Antenna
 
PROCESS CONTROL  &  I.T.
A Real LAN twist cable
Access LAN devices via GSM
Good LANs in Noisy Sites
Splicing CAT-5 Cable
Ensuring Signal GND on RS232
Handy RS232 Sniffer Probe
Protecting Notebook RS232 Ports
RS232 Break-Out Box
Understanding RS232
Using PC RS232 ports
Using RS232 over long distances
Using RS232 and Modems
Using RS232 to Power Devices
Upgrading NetGear DG8x4 Routers
Careful of Common Mode Voltages
 
POWER  &  HV
Generating 3-Phases from 2
Powering AC Adapters on DC Mains
Spikes worse on Live or Neutral ?
Suppressing Appliance Clicks
Why a TV Chassis "Bites"
Why a diode in line with this coil?
 
TEST  &  MEASUREMENT
Analogue Multimeters and dB
Deaf Aid Loop Tester
Economical Impulse Generator
Extending the HV input range
"Lamp-Fuse" for safe 230V repair
Locating Cable Shorts
Measuring beyond 230VAC
Measuring in Excess of 1kV
RS232 and Instrumentation
Simple Logger Input Amp
"Soft Earthing" Instruments
Summing CT Values
Telephone Line Monitor
When is a lead-acid dead!
 
OTHER
Extending BT Telephone Sockets
Low Energy Pet Repeller
Mains LED
Pool Algae Eliminator
Resistor Attenuator tables
The Ultimate Travel Adapter

LINKS
Some Interesting Sites
Email the Author
Using these Framed Pages
 

www.faultlink.co.uk
Independent Fault Investigation
and Analysis Consultancy