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| Joined: | Nov 21st, 2009 |
| Location: | United Kingdom |
| Posts: | 182 |
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Been thinking about this today and have done some hook ups to check.
If I remove the choke from the diagram and instead use the 100K resistor in its place so as to give me a circuit, I hear mostly a 50hz hum from the mains here in the UK.
Could I filter this using passive components, but still keep this 'sniffer' sensitive to all other fqs?
Thanks
Mike