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Technical Support and Helpful Information

Ammeter Shunt CalculationsHow to calculate the resistor required to change the measuring range of an ammeter.
DMX 512 ProtocolA brief guide to the description and operation of DMX lighting protocol.
Smoke Machine Cleaning FluidInstruction sheet and data on smoke machine cleaning.
Active Induction LoopsCalculating and design of induction loops.
100V Loudspeaker TerminologyUnderstanding constant voltage loudspeaker installations.
Microphone CharacteristicsPick up patterns and characteristics explained.
Radio Microphone LicenseHow to apply and obtain a license.
Flexible LED Strip ControllersSelecting the correct controller for your LED lights
DVM - CAT.Help with choosing the right multimeter.


ESR Electronic Components Ltd Cullercoats Tyne and Wear NE30 4PQ