AC line filters

[Dave T]

Do any of you use an AC line filter on your digital scales? I know this has been discussed in the many threads on scales so which filter are you using and here is the line filter I am thinking of buying.
http://www.bhphotovideo.com/bnh/controller/home?O=&sku=509491&gclid=CKnzkoXMkr0CFWXl7AodbDIAYQ&is=REG&Q=&A=details
Dave T

 

[dkhunt14]

I have one for my Denver. The one I bought guarantees no damage from surge. I bought it a couple of years ago on here when they had a group buy. When you have a thousand dollar scale you would be crazy not to protect it. Matt

 

[JamesnTN]

I use one of these.


APC SMC1500 Smart-UPS 900 Watts/1500 VA Input 120V/Output 120-Volt Interface Port USB with Uninterrupted Power Supply


http://www.amazon.com/gp/product/B007ZT2KKM/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

 

[Dave T]

JamesnTN,
Now you use this filter for your digital scale, correct? I'm not concerned with a battery back up, but is this the route I'll have to go to eliminate any noise or what ever in my ac power outlet.
Dave T

 

[JamesnTN]

Yes I use this for my digital scales and for the powder dispensers as well. It may be over kill but I don't see any fluctuations in power with this device in use. With scales that cost in excess of 1200.00 I don't want to take any chances of power surges or dirty power.

 

[Dave T]

JamesnTN,
Ok James, I have to agree and it's the "dirty power" that I'm concerned about. Thanks for your input.
Dave T

 

[people]

I use the apc 725. Seems to work well for me.

 

[amlevin]

Yes I use this for my digital scales and for the powder dispensers as well. It may be over kill but I don't see any fluctuations in power with this device in use. With scales that cost in excess of 1200.00 I don't want to take any chances of power surges or dirty power.

Seems strange that one would pay $1200 for a scale and not think the manufacturer has taken care of line power "filtration".

All my devices that use AC convert it to DC and have a series of filters as part of the power supply. A surge will usually blow a fuse or get shunted to ground by internal protection. The higher the price of my electronics the more attention to detail. The cheap stuff? Well, it's cheap so they had to leave something out.

If I wanted the ultimate in smooth power for an instrument, especially if it uses a "Wall Wart" as a power supply, I'd use a large rechargeable battery pack that provided the proper voltage and then have an A/C adapter that was set to the "float voltage" for the battery pack. The larger the battery the greater the filtration. They act as giant capacitors and you get almost pure DC at the input to your device.

 

[royesses]

I use a Cyberpower CP850PFCLCD. 500 watts true sine wave pf corrected UPS on my digital scales. It is the least expensive true sine wave output ups I could find. $104.00 on Amazon.
Everything electronic in my house is on true sine wave ups's. I have 4 apc smartups 1400VA, and My computer stuff is on a smart ups 2200.
Also have 3 or 4 others for the cable system and security. I'm an ex electronics tech so I want smooth safe power to everything.
Battery replacement is quite expensive. The Cyberpower just uses a small battery, not very expensive but give 5 minutes runtime under full load. It would run the digital scale for hours.
All the UPS's filter the power line and provide surge protection, that is why I use it on my scale.

 

[amlevin]

Battery replacement is quite expensive. The Cyberpower just uses a small battery, not very expensive but give 5 minutes runtime under full load.

I solved that problem several years ago. Had a UPS with two 6V sealed batteries that had about 15 minutes run time. I removed the batteries, extended the power leads and hooked them to a Group 31 Deep Cycle battery. Ran the TV Set for 7 full hours during a power outage on a "Football Sunday"

Would probably run you scale for a year or two 8) 8)

 

[scpaul]

Mr.levin ,I' a retired electronics service tech. I worked on 100K office equipment systems. The power boards usually cost $1000-$2500, no they don't have anywhere near enough filtration/surge supression. Another thing that you get by using a UPS is Brown-out protection, usually more damaging than surges because the pwr. bds. do use capacitors which absorb most short term spikes. Full sine-wave protection is great, most generators/inverters will blow boards pretty quick due to clipped or square sine-wave generation. I hope this will help you in the future, Paul

 

[Trevor60]

It was suggested to me and I believe it was on here as well that the Belkin was a good line conditioner power surge protector.


I got this version but there is newer versions one sale at reasonable prices.
http://www.amazon.com/Belkin-PureAV-Theater-Power-Console/dp/B000T9DHZW

 

[Ghansen]

I use one of these.


APC SMC1500 Smart-UPS 900 Watts/1500 VA Input 120V/Output 120-Volt Interface Port USB with Uninterrupted Power Supply


http://www.amazon.com/gp/product/B007ZT2KKM/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

These are a good unit, clean power signal and protection by battery backup. The power goes from the mains through the battery to the gizmo's inside, gets cleaned up to output a good signal from mains or battery. Protect and enjoy your equipment! Good for your expensive hi fi as well, especially when there's a game on as per another post!.

 

[KWeigel]

Oooh boy.... the libs are going to pick up on all this "dirty power" talk.

 

[gaboon]

The grounding conductor is the ground wire (green) needs to go back to a good earth ground. The grounded conductor is the neutral (white) is more important to protect and make sure the circuit is dedicated to the electronics. Along with a good surge protector you will have no problems.

 

[KWeigel]

The grounding conductor is the ground wire (green) needs to go back to a good earth ground. The grounded conductor is the neutral (white) is more important to protect and make sure the circuit is dedicated to the electronics. Along with a good surge protector you will have no problems.

As long as we are all in a true 4 wire system. I am sure we are all not.

 

[scpaul]

I believe Mr. Gaboon is 100% correct. Without a very good ground ths spikes have nowhere to go/dissapate. You may want to ck. into the latest UL/CSA spec. is reguarding surge supression devices. Keep in mind that are definately better than spec. supressors, but the spec. will surprise you. It will be given as a max. voltage over a period of time.I think that most units had it on them or atleast on the spec. sheet. If you find it you may want to post it for everybody's benefit.later ya'll Paul