So I needed a way to automatically switch between 110 Volt and 240 Volt AC inputs and came up with the simple following
The theory being when 220 Volts is received then K1 is energized and the AC output is passed through as 220 Volts
When 110 Volts is received K1 does not get energized and is passed through the auto transformer to step up the output to 220 Volts.
It works as it should , but the problem I am having is relay chatter on 110 Volts , as K1 seems to want to operate down to 90 Volts!!! ( though the data sheet says 150 Volts ).
Any recommendations on how to solve this or pointers to a better way with a schematic would be appreciated .
Thanks
The theory being when 220 Volts is received then K1 is energized and the AC output is passed through as 220 Volts
When 110 Volts is received K1 does not get energized and is passed through the auto transformer to step up the output to 220 Volts.
It works as it should , but the problem I am having is relay chatter on 110 Volts , as K1 seems to want to operate down to 90 Volts!!! ( though the data sheet says 150 Volts ).
Any recommendations on how to solve this or pointers to a better way with a schematic would be appreciated .
Thanks