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AN3095 Scheda tecnica(PDF) 25 Page - STMicroelectronics

Il numero della parte AN3095
Spiegazioni elettronici  The STEVAL-ISV002V2 demonstration board is the same
PDF  55 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3095 Scheda tecnica(HTML) 25 Page - STMicroelectronics

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AN3095
Schematic description
Doc ID 16555 Rev 3
25/55
For example, a cheaper solution may be implemented using a simple voltage divider or a
shunt resistor together with an analog opto-isolator to provide galvanic isolation between the
power stage and control section. The price to pay in this case is the added complexity of the
sensing circuitry.
The physical connection to the grid is realized by means of two relays, placed on line and
neutral, which are controlled by an I/O of the control board with the STM32F103xx
microcontroller, and supplied by the 24 V bus generated by the multi-output power supply.
The feedback signals are sent to the control board by means of coaxial shielded cables
connected to J14 and J15 on the relays board.



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