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PWM / Frequency Tester, XY-PWM1
PWM / Frequency Tester, XY-PWM1
WE OFFER THIS PRODUCT AS A COURTESY TO BUYERS OF OUR WIDGET MAN FAN CONTROLS AND ADAPTORS. THIS IS A CHEAP CHINA-MADE TOOL, BUT THERE'S NO SIMPLER WAY TO SORT OUT A BRUSHLESS FAN WITH UNKNOWN PWM CHARACTERISTICS. FOR TACHOS AND SPEEDOS, YOU CAN SEE IF A 12V SQUARE WAVE WILL DO OR IF A BOOSTER OR RELUCTANCE SIMULATOR IS NEEDED. THIS GIZMO WILL PRODUCE ANY FREQUENCY FROM 1Hz TO 150KHz WITH PWM DUTY CYCLE CONTROL FROM 0~100%. IT OUTPUTS THE SAME VOLTAGE YOU POWER IT WITH (IT WILL WORK AT 3.3~30V), AND DRIVES ABOUT 30 MILLIAMPS MAX WHICH IS IDENTICAL TO MOST WIDGET MAN DEVICES. TO TEST TACHOS AND SPEEDOS, SET THE PWM FOR 50% (SO IT'S THE SAME DUTY AS MOST WIDGET MAN ADAPTORS) AND VARY THE FREQUENCY. FOR FANS, USE 50% FIND THE FREQUENCY IT LIKES, THEN VARY THE PWM TO DISCOVER THE OFF-ON-MAX PROFILE. WHEN TESTING DEVICES OFF THE CAR, BE AWARE THAT IF THE TESTER IS ON A SEPARATE SUPPLY OR SEPARATE BATTERY, THE TESTER GROUND AND DEVICE GROUND NEED TO BE CROSS-CONNECTED.
NOTE THAT BECAUSE THIS IS A CHEAP CHINA IMPORT, WE ONLY WARRANT THAT IT WON'T BE DEAD ON ARRIVAL. WE OFFER NO OTHER WARRNTY.
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