Sizing stepdown transformers

zulu5d · 27th September 2003, 02:29 AM

What size 240/110 stepdown tranny would I need to power a Mcintosh MC240....a 500W unit pops its fuse.I'm assuming its the startup current thats the problem..1000W?
Thanks

li_gangyi · 27th September 2003, 04:10 AM

We would really appreciate it if you put ur Amps or wadever you are trying to power's Wattage rating...not the sound output...but the electricity consumtion figures...either amps or watts...

zulu5d · 27th September 2003, 04:25 AM

OOPS!

145W signal out
270W full power out

JOE DIRT® · 27th September 2003, 06:28 AM

a 1 kva step down transformer 240/120 will give you 10 amps approx and is more than enough for the amplifier

Squalish · 2nd October 2003, 01:49 AM

You could just switch to a slow-blow fuse, although this may not protect from things like lightning.

27th September 2003, 02:29 AM	#1
zulu5d diyAudio Member Join Date: Aug 2003 Location: Sydney, Australia	Sizing stepdown transformers What size 240/110 stepdown tranny would I need to power a Mcintosh MC240....a 500W unit pops its fuse.I'm assuming its the startup current thats the problem..1000W? Thanks

27th September 2003, 04:10 AM	#2
li_gangyi diyAudio Member Join Date: Jun 2003 Location: Woodlands Circle	We would really appreciate it if you put ur Amps or wadever you are trying to power's Wattage rating...not the sound output...but the electricity consumtion figures...either amps or watts... __________________ Kids in the back seat cause accidents...Accidents in the back seat cause kids...

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27th September 2003, 04:25 AM	#3
zulu5d diyAudio Member Join Date: Aug 2003 Location: Sydney, Australia	OOPS! 145W signal out 270W full power out

27th September 2003, 06:28 AM	#4
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	a 1 kva step down transformer 240/120 will give you 10 amps approx and is more than enough for the amplifier

2nd October 2003, 01:49 AM	#5
Squalish diyAudio Member Join Date: Aug 2003 Location: Sector ZZ9 plural Z alpha	You could just switch to a slow-blow fuse, although this may not protect from things like lightning.

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