I have a lead on a late production Quadra so I guess I better invest in a B-B Xfmr to get my sometimes 250 volt line down to something acceptable to my new little friend. Question is on the rating fo
Hi Dick, You don't need a 1.5KV rating. Let's say you want to drop the line voltage by 12V and suppose the maximum current drawn from the AC line by the amplifier is 15 Amps. You'd thus need only a 1
Move the decimal to the left. I have a lead on a late production Quadra so I guess I better invest in a B-B Xfmr to get my sometimes 250 volt line down to something acceptable to my new little friend
ORIGINAL MESSAGE: (may be snipped) REPLY: This isn't what you asked, but you really need to get the power company to fix your over-voltage problem. Anything in your house that runs off of the 240 lin
The American National Standard for Electric Power Systems and Equipment allows the service range for nominal 240 VAC mains to be 228 - 252 VAC. The utilization range extends to 254.4 VAC. Find the re
ORIGINAL MESSAGE: (may be snipped) REPLY: Nevertheless, I would ask the power company to fix it. If they refuse, then go from there. 73, Bill W6WRT dezrat@outlook.com ________________________________
The power company is not very likely to reduce the voltage! Especially with the load placed on the distribution systems during the summer months, the company is going to run higher voltage and that
The issue is that the Quadra was designed for the Japanese market in an era where the common input power level was 100/200 V and typical maximum voltages were 220V. As such a 240 V maximum input volt
I don't know why anyone would want to reduce the line voltage for use with the VP-1000. It's a switchmode power supply with "universal input," and will become more efficient at higher line voltages.
'It's a switchmode power supply with "universal input," and will become more efficient at higher line voltages...' WB2WIK If that's the case Steve, I would only be concerned if the amp's firmware rep
I had a Quadra for about two years and my line voltage runs about 245V in the winter and more like 250-252V in the summer (they crank it up, I guess, perhaps to reduce line losses when everyone's usi
Dick, Max Volts 264 Max Amps 62.5 1.5KVA The current rating does not make sense. How can I sort this out ?? As Carl said: Move the decimal point in the current rating. It's very common to see Chinese
AC 200 to 240v. Anything approved by UL is subjected to testing at +/- 10% of nominal line voltage (for 240, that calculates to 216v to 264v), and the device should be able to operate over that range
I have read all the responses and feel the safest course is to purchase a Buck-Boost XFMR (new ones are available for ~ $50 or less). The consequences of a Power Supply failure are quite expensive to
Does the Quadra have a switching power supply? 73 Jim W7RY The issue is that the Quadra was designed for the Japanese market in an era where the common input power level was 100/200 V and typical max
Yes. It's an OEM switcher with a Yaesu control board wrapped around it. The service manual contains no information on the OEM unit. 73, ... Joe, W4TV 73 Jim W7RY --Original Message-- From: Joe Subich
Hi Dick, I believe you are misinterpreting the KVA rating in the table. The KVA refers to the power dissipated in the load (i.e., your amplfier) and not the KVA rating of the buck-boost transformer.
line should A very good point, Bob. It also confirms several years of practical experience here: on a supply that regularly rises to 250V, the Quadra has no problem whatever. A buck-boost transformer
Jim, Dick, For example, let's say your actual line voltage is 250V and the amplifier draws 14 Amps, which correspnds to a power rating for the amplifier of 3.5KVA. (That, by the way, is the peak powe
I agree with Manfred's comments exactly. When I referred to "peak power" in my example, what I actually meant was the RMS power drawn by the Quadra from the AC line when it is driven to its maximum o