 Posted: Tue May 15, 2007 1:23 am Post subject: |
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| Could be a number of possibilities. The optocoupler pulse is used as a source to counted down /process against a preset reference oscillator while trigerring the segment displays. Beside the connection& or power supply issues, I'd start by tracing the optocoupler pulse onward..... | |
| Posted: Mon May 14, 2007 11:29 am Post subject: help!! |
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| It is about a wind-velocity measurement digital circuit in an exam question.
Here is the link where you can see the circuit: http://www.diskusjon.no/index.php?showtopic=752114&hl=+temperaturm%E5ler Its norwegian but you can see the circuit if you scroll down on the page. Well anyways the question is pretty simple actually: The 7 segment display is showing 00 even though the wheels on the wind-velocity measurer are rotating. What are the possible reasons for that?? |
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