line filter is it necessary?
- Thread starter stevebm1
- Start date
What exactly do they do?
I live just outside my village with overhead power lines to my house. Quite often I get power drops and the lights dim in the house, if I use my chip saw the lights flicker. I have asked an electrician what he thinks and says it's just that I am end of the power line for the village.
Is this likely to damage my cabs? Is there anything I can use to not harm the cabs
Sorry to hijack the tread.
Steve
I live just outside my village with overhead power lines to my house. Quite often I get power drops and the lights dim in the house, if I use my chip saw the lights flicker. I have asked an electrician what he thinks and says it's just that I am end of the power line for the village.
Is this likely to damage my cabs? Is there anything I can use to not harm the cabs
Sorry to hijack the tread.
Steve
It does pretty much what it says - it filters the mains signal chopping out high frequencies. There's no (or not much) charge store so it won't help you in a brown out where the line voltage dips.
You could fit a battery-backed Uninterruptible Power Supply (UPS) but a good spec one will be expensive, CRTs aren't overly nice things to run on UPSes and you have to mess about with battery conditioning from time to time.
I wouldn't bother - I can't see that occasional brown outs will harm anything.
The US went through a period of being overly concerned about EMI and RFI (electromagnetic interference and radio frequency interference) so the FCC came up with overbearing rules about EMI/RFI filtering. That's why loads of Atari games have the filterboards that just sit after the edge connector and have a bunch of ferrite chokes on the lines and why you can remove them with no ill effect. Or why early US consoles had solid metal cases underneath the plastic with a few tiny holes for the cables. Eventually they chilled out a bit which led to the thin flexible metal cases covering bits of the motherboards.
The interface board on Star Wars PCB sets is a good example.
It just takes the board connectors, filters them, introduces another opportunity for poor connections, and then presents them at the top. Look at all that metal!
You could fit a battery-backed Uninterruptible Power Supply (UPS) but a good spec one will be expensive, CRTs aren't overly nice things to run on UPSes and you have to mess about with battery conditioning from time to time.
I wouldn't bother - I can't see that occasional brown outs will harm anything.
The US went through a period of being overly concerned about EMI and RFI (electromagnetic interference and radio frequency interference) so the FCC came up with overbearing rules about EMI/RFI filtering. That's why loads of Atari games have the filterboards that just sit after the edge connector and have a bunch of ferrite chokes on the lines and why you can remove them with no ill effect. Or why early US consoles had solid metal cases underneath the plastic with a few tiny holes for the cables. Eventually they chilled out a bit which led to the thin flexible metal cases covering bits of the motherboards.
The interface board on Star Wars PCB sets is a good example.
It just takes the board connectors, filters them, introduces another opportunity for poor connections, and then presents them at the top. Look at all that metal!