Found the VA rating of the transformer
Great news.
While still out stationed, I received a mail from the toroid manufacturer Ten Pao. I repeatedly made a dozen requests to know the VA rating of this toroid in their "Online Inquiry" & "Contact" section of their website.
My request to Ten Pao -->
Kindly inform me about be the VA rating of this toroidal transformer
Model No: TOG433028F0
Input: AC 230V/50Hz
Output: AC 20.1V x 2
This transformer is used by my Logitech Z-2300 and had gone dead. Since my Z-2300 is outside warranty & thus no support from Logitech, I need to buy one from the market. So, I need the VA rating of this toroidal transformer. I have repeatedly asked for help in the "Online Inquiry" section of you website with no reply.
Kindly please help me.
Thanking You,
RishiGuru
Country : India
Their answer after a dozen request :
Dear RishiGuru,
After confirming with our engineer, the VA rating for this model is 150.9, and our company didn't set any retail place in India, so please contact with your Logitech Z-2300 supplier.
Best Regards
Sam Su
Marketing Department
TEN PAO INTERNATIONAL LTD.
Tel: 86-752-2312309
Fax: 86-752-2312813
Skype: sam_su85
Email: (E-Mail Removed)
MSN: (E-Mail Removed)
website:
Ten Pao International Ltd
From: RishiGuru
Sent: Sunday, December 12, 2010 9:39 PM
To: (E-Mail Removed)
Subject: 線上查詢
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The toroid is 150.9VA
So, it seems 150.9 VA --> 2 x 20.1 V, 3.75A
It seems that 200W claimed output is to much for the 150.9 VA transformer after all.
Also what I learned from you TechGurus, in order to produce Z-2300 clamied 200W RMS one needs a transformer that is capable of to deliver a minimum of 1.27 times the claimed watt.
Since Watt = Volts X Ampere = VA
200W requires = 200 X 1.27 = 254 watt or 254VA = ~ 255VA transformer as a minimum requirement
Since here we have 150.9VA. Maximum output of the system = 150.9/ 1.27 = 119W =~ 120W.
Am I right or wrong. Kindly help