Dear ,
I did LM331 board as expected, but I have a strange signal output which is coming worst with voltage increasing :
any idea ?
Best regards
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Dear ,
I did LM331 board as expected, but I have a strange signal output which is coming worst with voltage increasing :
any idea ?
Best regards
Please click on Insert/Edit Media button above and attach the schematic of your board showing all external component values, voltages and input signals.
Please note that Frequency Output, pin 3, is an open-collector output and thus requires a pullup resistor to work properly.
Dear Marek,
Any advise about this request ? could you look at my schematic please.
Thanks
regards
Hi user4303883,
Let's assume that you don't have a circuit connection problem on your LM331 PC board, then something else is preventing the circuit from functioning as expected. Here are some things I would check:
Do let us know if any of this helps get the circuit functioning.
Regards, Thomas
Precision Amplifiers Applications Engineering
Hi,
We haven't heard from you in a while. We hope the issue was resolved. Closing this thread now. Reply to re-open if you have any additional questions.