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Open collector output and HSC input

I have a meter which gives pulse output from open collector transistor. I want to connect this to channel 1C (HSC). The problem is the transistor works from 8 to 40VDC only. The 1C internal supply from datataker is 3V only. How can I wire them to work?

TQ [Chandran]

I have a meter which gives pulse output from open collector transistor. I want to connect this to channel 1C (HSC). The problem is the transistor works from 8 to 40VDC only. The 1C internal supply from datataker is 3V only. How can I wire them to work? TQ [Chandran]

Good morning Chandran,

The High Speed Counter is designed to be used with open collector (Contact closure) outputs.
The meter should be opening and closing the transistor and switching the path to ground.

The normal wiring is Output of meter to the high speed counter and the other to the digital ground.
If it does require a higher Voltage then connect a suitable voltage DC power supply +ve to a current limiting resistor to the HSC input and the other side to the DGND.

Cheers,
Roger

Good morning Chandran, The High Speed Counter is designed to be used with open collector (Contact closure) outputs. The meter should be opening and closing the transistor and switching the path to ground. The normal wiring is Output of meter to the high speed counter and the other to the digital ground. If it does require a higher Voltage then connect a suitable voltage DC power supply +ve to a current limiting resistor to the HSC input and the other side to the DGND. Cheers, Roger
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