jea48
Responses from jea48
| Yet Another Post About Power Conditioners! @output555 **IF** the dedicated ground rod is all the electrician used for the ground for the duplex receptacle outlets then there is not a safety equipment ground connection back to the electrical service electrical panel equipment ground. What y... | |
| Yet Another Post About Power Conditioners! @ lowrider57 The Entech Broadband Noise Analyzer is what @output555 used for his test. An earlier post of mine: jea483,683 posts 10-17-2021 2:20pm output555 OP Said: The EMI noise and RFI are being measured straight from the outlet. The s... | |
| Yet Another Post About Power Conditioners! @ rudyb The Entech Broadband Noise Analyzer picks up the AM radio station.https://www.youtube.com/watch?v=5FU_MV3GWSQ . | |
| Yet Another Post About Power Conditioners! output555 OP Said: The EMI noise and RFI are being measured straight from the outlet. The system behaves nicely. @ output555 What type of meter did you use to measure it?. | |
| Yet Another Post About Power Conditioners! whart2,390 posts 10-16-2021 10:48pm @output555 - I hear you, it is a question of spending money on electricians and dealing with what may be system wide (power not just hi-fi) issues.@mikelavigne - not being one for watching long videos (nice pl... | |
| Yet Another Post About Power Conditioners! output555 OP70 posts 10-16-2021 7:17pm To Fuzztone: Dunno, maybe. The electrician installed them when I built my home. They have their own grounding rod. "Their own grounding rod"...@ output555, Any idea how the electrician wired the new ground... | |
| How To Do You Measure the Quality of Your AC Power? The reason that many (including me) say that equipment ought to be on one leg, is that in fact I say it must be plugged into the exact same outlet (with outlet strips as needed. This is the only way to minimize ground loops. I am also a believer ... | |
| How To Do You Measure the Quality of Your AC Power? I could never figure out why the load on the two legs has to be balanced, do your electric devices all turn on and off at the same time? There is always going to be an imbalance. Yes, 120V loads may be turning on and off at various intervals but... | |
| VARIAC: Procedure??? 2 old 30 wpc tube amps, unused for 4 years Unless the amps were modified there are not any regulators in the amps. A schematic wiring diagram can be found in the instruction manual. Just a guess the power supply caps were replaced as well as any coupling capacitors.I would probably pull al... | |
| Is it time for new surge suppression devices? NEC now recommends whole house surge suppression Erik, I think you meant to say NEC now requiresYour State, county, or city, may not have adopted the 2020 NEC as yet. Check your State. https://www.jadelearning.com/nec-code-adoptions-by-state/For ... | |
| Why Do All Arcam Units (and Maybe Others) Have Only Two-Prong Power? @ jwseitz Because Arcam spent the additional cost and used double insulated AC power wiring. Class II (with Roman numerals) refers to power supplies with either a double or reinforced insulation barrier between the input and the output. Class II... | |
| Electromagnetic fields. Be forewarned, this involves science... @ perkri You said: You can see in the movie how an ac signal generates waves in a predictable pattern along the conductor. With the complex waves being generated by an audio signal going through a wire, those waves are going to, in turn, have an i... | |
| 60 Hz Hum from Powered Sub The 2 prongs on a plug, one is hot the other neutral, aka utility ground. The third is earth ground and is redundant. My first thought when reading this was to not respond. But then after thinking about it for awhile I would be remiss if I did no... | |
| How To Do You Measure the Quality of Your AC Power? mkgus OP281 posts 08-31-2021 10:57am Quick update: I called my utility company and they sent someone out immediately. They discovered that the neutral lug on the homeowner side of the meter was loose and the bolt is stripped. An electrician is o... | |
| 60 Hz Hum from Powered Sub I assume the DC power supply uses full wave rectification. : a rectifier that converts alternating current into continuous current and that utilizes both halves of each cycle of the alternating current. 120 ripples per second. I would think if i... |