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22 mai 2013
In this article I would like to point out how DUOX amplifier can be supplied with different topologies depending on the type and size of the installation.
General speaking DUOX supply system is similar to the Bus2 supply way, that means via a power supply unit (PSU, 18Vdc) together with a filter module Ref.3243. The main function of this filter is to avoid DUOX signal to leave the bus due to the high impedance presented by the filter at the same time that it couples the DC current (power) into the DUOX bus.
The DUOX amplifier has been designed with an internal filter that possibilities for small installations (until 24 apartments, as the internal filter is small, with higher impedance and losses) not to use external filter Ref.3243, but to connect directly the PSU 18 Vdc to the amplifier terminals “+” and “GND”.
In the below table and schematics you can find the different options with and without filter Ref.3243, for 1 or 2 amplifiers and using 1 or 2 power supply units.
You can find enclosed a power point presentation with the above schematics:
I hope that the above schematics will help you to design the best and most accurate DUOX installation according to the client´s requirement.