WIDE VOLTAGE RANGE ELECTRONIC MODULE
Publication Date: 2013-Jun-06
The IP.com Prior Art Database
The present invention relates to an electronic module that is an interface between the contactor and the power supply for the contactor. The proposed electronic module is used for providing the same coil for both alternate current and direct current supply. Further, the electronic module with a control circuit is standardized and operates over a wide voltage range using dip switch selection.
The present invention relates generally to electronic modules and more particularly to the electronic module with control circuit standardized to a wide voltage range.
In general, electronic module (E-module) which is an interface between the contactor and the power supply for a contactor. Control circuits are circuits that use control devices to determine when loads are energized or de-energized by controlling current flow. Control circuits usually carry low voltages than power circuits and operate at a fixed voltage.
On the other hand, input of the control circuit can vary according to a contactor range. As a result, there should be a fixed power supply circuit which can give the same voltage even when the input voltage varies over a very wide range, as the range of voltage is from 12V to 440V.
However, the number of components and the power consumption required is increased. Further, space available for electronic module (E-module) is very small and limited. This problem has not been addressed before, and the existing research works are focused on control circuits with a specific voltage.
Therefore, it would be desirable to have a standardized control circuit for the wide range of voltage ratings without the need of different E-modules for different voltage ratings.
The present invention could apply to an electronic module which is an interface between the contactor and the power supply for a contactor. The E-module is used for providing a same coil for both alternate current (AC) and direct current (DC) supply.
The E-module comprises power supply, control circuit and power circuit. The power circuit is a buck converter circuit which reduces the output voltage as per the duty ratio of the pulses given by the control circuit.
Control circuit generates a train of pulses starting with a pulse width of 120ms (milli seconds) and later with a reduced duty ratio. The 120ms pulse is a mono stable pulse and a stable c...