Display circuit design

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Description

Experience Level: Intermediate
Hi Dominic

We need a circuit designed which will have an alphanumeric display with additional red and green indicators.

If a display with Programmable Backlighting can be found then even better!

We are using flowmeters to measure gas flow. The flow meter provides an open collector transistor output. This output is conducting for flows higher than a set point. For no or low flows , the flow meter gives a non conducting or open circuit output.

We need an alphanumeric display (LCD or LED) to show Gas ON, Gas OFF with green and red LED's accordingly.

The larger the LED's the better.

The assembly will be mounted in a box with a 5W XLR panel socket for connection.

Our client has a budget for the final product which isn't much! Total manufacturing qty will be 50 units as a one off job.

Can you help?

Thanks Simon

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