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AssigneeSansha Electric Manufacturing Company, Limited
InventorsKunio Karino, Haruo Moriguchi, Toshikazu Fujiyoshi, Tetsurou Ikeda, Kenzo Danjo, Masahiro Aoyama
Estimating the term…
An arc welder which can be used with either a high voltage a.c. power supply of a certain voltage or a low voltage a.c. power supply of about a half of said voltage, such as 400 or 200 volts, for example, and which is provided with a circuit configuration in which an input a.c. voltage is rectified by a rectifier and smoothed by a pair of capacitors and the resultant d c. power is converted by an invertor into a high frequency a.c. power which is reduced in voltage by an output transformer and then rectified again, and arranged to discriminate the input a.c. voltage and switchingly connect these capacitors in series or parallel between both ends of the input rectifier, thereby automatically conforming the circuit to both high and low supply voltages.
An arc welder comprising input terminals to which an a.c. power supply of either high voltage or low voltage which is substantially a half of said high voltage is to be connected, an input rectifier for rectifying an input from said a.c. power supply, a pair of capacitors for smoothing an output of said input rectifier, a pair of invertors driven by outputs of said capacitors respectively to generate corresponding high frequency a.c. power outputs, an output transformer including a pair of primary windings provided with said high frequency a.c. outputs of said pair of invertors respectively for transforming said high frequency outputs, an output rectifier for rectifying an output of said transformer, and switching means for discriminating voltages of said a.c. power supply connected to said input terminals and connecting said pair of capacitors in series and parallel between output terminals of said input rectifier in response to said high and low voltages, respectively;
An arc welder comprising input terminals to which an a.c. power supply of either high voltage or low voltage which is substantially a half of said high voltage is to be connected, an input rectifier for rectifying an input from said a.c. power supply, a pair of capacitors for smoothing an output of said input rectifier, a pair of invertors driven by outputs of said capacitors respectively to generate corresponding high frequency a.c. power outputs, an output transformer including a pair of primary windings provided with said high frequency a.c. outputs of said pair of invertors respectively for transforming said high frequency outputs, an output rectifier for rectifying an output of said transformer, and switching means for discriminating voltages of said a.c. power supply connected to said input terminals and connecting said pair of capacitors in series and parallel between output terminals of said input rectifier in response to said high and low voltages, respectively, characterized in that said output transformer comprises:
An arc welder comprising input terminals to which an a.c. power supply of either high voltages or low voltage which is substantially a half of said high voltage is to be connected, an input rectifier for rectifying an input from said a.c. power supply, a pair of capacitors for smoothing an output of said input rectifier, a pair of invertors driven by outputs of said capacitors respectively to generate corresponding high frequency a.c. power outputs, an output transformer including a pair of primary windings provided with said high frequency a.c. outputs of said pair of invertors respectively for transforming said high frequency outputs, an output rectifier for rectifying an output of said transformer, and switching means for discriminating voltages of said a.c. power supply connected to said input terminals and connecting said pair of capacitors in series and parallel between output terminals of said input rectifier in response to said high and low voltages, respectively, characterized in that said output transformer comprises;
Dependencies are inferred from the claim text.