Briidea Dirty Electricity Filters, Reduce High-Frequency Noise Caused by Electronic Devices for a Stable and Clean Power Supply for You, Extend the Lifespan of Your Electric Device, White

I bought because of a microwave on a dedicated circuit to tripping the arc fault breaker randomly, it's been 4 months and no issues, previously it would trip anywhere between a week or a month, the microwave has a noise filter,but this additional filter really makes a difference when we have these new electric codes with sensitive circuit breakers

I opened it up to check what it had inside (no longer eligible for return). I bought it to keep the RF from my ham transmitter from interfering with my cable box. Anyway, what inside is a large (~24 uF) capacitor, two ceramic disc capacitors (~330 nF each), and an ineffective 330 kOhm bleeder resistor. You get ~330 nF from each side of the line to the ground pin. The bleeder is connected from L to N conductors, so when the device is unplugged, it doesn't bleed the stored charge on the capacitors. This point was mentioned in several reviews - no you know how and why it happens. There is no inductive or magnetic component in the alleged filter. The 24 uF is connected from L to N and will draw approximately 1 Amp at 120V 60 Hz. It will take the bleeder resistor about 24 seconds to discharge the capacitor, so if you touch the prongs immediately after unplugging it, you could get a substantial shock (see other reviews). I was suspicious when the mentioned "dirty electricity" in their advertising. I've been an electrical engineer for 60 years and have never encountered any dirt in electricity. I assumed they mean electricity with noise riding on it, which is quite common. In any case, the ability of the device to remove noise is likely to be limited to differential mode noise. It my remove some higher frequency noise, such as that caused by motors and contactors. One of its weaknesses is that it can only bypass the L and N to the "ground" pin; in real world noise situations the noise is often on the "ground" conductor as well as on the L and N. The case and male and female line connectors look quite good, so I used them and added my own filter in the volume where their capacitor sits. I was also be able to reuse their circuit board. My filter, a tri-filar wound toroid core, did the job for me.

I bought these for my wife as a last chance choice to help her sleep through the night. We have a power plug right behind the headboard. Added these 2 devices to that plug and it worked great. Within 2 days she slept great. Woke up from the complete night's sleep. I was NOT a believer of this dirty electricity. BUT I WAS WRONG. My daughter got some for her bedroom too.

I have this plugged between my Anker power strip and the wall outlet and in return. I have 12 clean outlets that I can use for my audio equipment. It works and yes I’m hearing the difference. I plugged my WiiM Ultra, FiiO Warmer R2R, FiiO K15 and EDIFIER R2750DB MKII to the Anker power strip. All getting filtered and clean energy. Try it and if you’re not satisfied or hear any difference. Then return the product.

Plugged in but interference continued

I run on a treadmill while watching TV. My treadmill was causing interference. My stationary bike trainer does not have the same issue. Plugging the treadmill into this and then into a receptacle on the opposite side of the room from my TV eliminated the problem virtually always. Occasionally I still have a few horizontal lines, but I'm unsure whether it's from the electric connection or is direct EMF from the motor. This solved the problem both for Roku and computer-streamed shows.

Reviews are mixed, but I was interested in the emi online noise factor. Why I have 800 and above noise ? Possibly the new digital electric meter ? But can state, using this filter did drop the emi noise factor a good -500 ! Using the evergreen emi meter. Did find some battery UPS backup systems were '0' noise, and others full line noise ? Newer UPS units cyberware did nothing to noise factor, olders units doing great ! Did not check for shock issue when unplugged, but the unit has to have capacitors in it that will hold charge for a time until lost ? One star off, just first day with it, history thing.

NOT A SAFE PRODUCT!!! This electricity filter is not built well for filtering electrical noise as it is advertised. Not worth the money, don't be fooled by the size. Holds a lot of power if you unplug it do not touch the terminals or it might shock you. This product is built to be used like a UPS, but instead of using a battery, it's a capacitor. It filters some high frequency noise, and for my speakers it worked for a minute and then stopped working shortly after. I bought the product because I wanted it immediately and this one would ship the fastest. Probably because it's not worth the money. I didn't read the reviews until afterward, and I saw the one that said it shocked them after unplugged. That made me very concerned, so I tested it and it seemed to work until I walked away and came back. Once I came back the same noise I was trying to eliminate was back and so I unplugged it and took a screwdriver and held it in the neutral terminal then touched the positive terminal and a huge spark came off the device. This is not a safe product to have around the house, and doesn't even work as advertised.

Just received two of the items today. I already have 4 x Stetzeier dirty electricity devices plus StetzeMicrosurge Meter. I compared each brand in regards to amount of reduction shown in Stetzeier Microsurge Meter. These new devices reduces equal or slightly better reduction than Stetzeier devices. I am very pleased and will keep them!