In many circuits, I found that a resistor should be connected in series with zener diode to protect it.
In this circuit, If a series resistor is used, The voltage of the load would NOT be the voltage on the zener diode. The load voltage would be the rectified voltage (230 * 1.414 = 325.22 V DC ). So, We have to use zener diode without the series resistor. But what about the protection of zener diode? The voltage across it is - 325.22 V DC. Is that ok?
Would you give me part number of a zener diode that is suitable for this circuit?
Thank you,
http://www.homemade-circuits.com/2011/12/how-to-calculate-and-deduce-current-and.html
In this circuit, If a series resistor is used, The voltage of the load would NOT be the voltage on the zener diode. The load voltage would be the rectified voltage (230 * 1.414 = 325.22 V DC ). So, We have to use zener diode without the series resistor. But what about the protection of zener diode? The voltage across it is - 325.22 V DC. Is that ok?
Would you give me part number of a zener diode that is suitable for this circuit?
Thank you,
http://www.homemade-circuits.com/2011/12/how-to-calculate-and-deduce-current-and.html