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- Single-Phase vs. Three-Phase Power
When you order a new broadcast transmitter, one of the first questions will be about power. Is it single-phase or three-phase alternating current? If single-phase, it is 208 or 240 volts? If it is three-phase, is it Delta or Wye connected? Fig. 1: Measuring voltages in an electrical panel. Don’t guess, measure it for yourself with a multimeter, as I described in a recent Radio World article. Use caution when measuring in an electrical service panel (Fig. 1). You will find 240-volt single-phase service used for homes, most studios and many transmitter sites. Center-tapped, it has two 120-volt circuits for equipment racks and lights, along with plug-in devices and numerous wall-wart power supplies. Heaters and air conditioners often require 208–240 volts. That single-phase power is derived, by the power utility, from three-phase farther up the power line. Phase What is this thing about phase? You might remember an article I wrote in 2013 about oscilloscopes (find it on the Radio World website by Googling “Your Scope Is a Tool for All Seasons”). That tool allows us to see voltage rising and falling at a periodic rate. Fig. 2: A 60 Hz sine wave on an oscilloscope. Fig. 2 shows an oscilloscope displaying a 60 Hz sine wave, which is the power we all use. With 60 cycles per second, it has a wavelength of 3,100 miles at the speed of light. That is 16.7 milliseconds of time between voltage peaks. Divided by three, it is 5.66 milliseconds between a voltage peak on one phase of three-phase power and the next. Said another way, there is a 120-degree phase difference from winding to winding, for a total of 360 degrees when the three-phase cycle is complete. Our nation’s electrical “grid” is three-phase because that is the most efficient way to send power over long distances. Locally, they often start with 13.8 KV or 4.46 KV, then step it down in transformers for 120- and 240-volt consumer consumption. Single-phase power comes from two legs of a three-phase circuit. The power company uses transformers called tubs or pole pigs on utility poles. The latest innovations, as you probably know, are ground-mounted transformers used with underground cables. As mentioned, three-phase power has a 120-degree phase difference between each of the three lines/legs. This kind of power is made in generators that are much like giant electric motors, except the generator shaft is turned by… [TheTopNews] Read More.24 mins ago - NBC’s Welker Grills Trump’s AG Todd Blanche On Comey Indictment in Showdown ...
NBC’s Kristen Welker confronted acting Attorney General Todd Blanche on the indictment of former FBI Director James Comey — and whether it was an act of retribution against a perceived political enemy of President Donald Trump. In a thorough interrogation on Sunday’s Meet the Press, Welker noted that the burden is on Blanche’s Department of Justice to prove that Comey intended to threaten the president’s life with an image he posted to social media which depicted seashells arranged to read “86 47.” “How do you prove intent, Mr. Blanche, when Mr. Comey himself said he didn’t understand that some people would look at that and think about violence?” Welker said. “You prove intent like you always prove intent,” Blanche replied. “You prove intent with witnesses, you prove intent with documents, with materials. So again, this is not just about a single Instagram post. This is about a body of evidence that the grand jury collected over the series of about 11 months. That evidence was presented to the grand jury. And it’s not the government. It’s not the Department of Justice. It’s not Todd Blanche that returns an indictment against James Comey. It’s the grand jury.” Welker noted the criticism from Fox News contributor Jonathan Turley — who called the indictment “facially unconstitutional, absent some unknown new facts.” “Are there, are you in fact saying that there are facts beyond this Instagram post that clearly establish an intent to threaten the president’s life?” Welker asked. “I’ve said repeatedly this was an investigation that lasted 11 months,” Blanche said. “If the only facts that existed was the posting of the Instagram, obviously that wouldn’t have taken 11 months. And so when Mr. Turley talks about whether it’s facially unconstitutional absent unknown facts or circumstances, we will necessarily have to prove beyond a reasonable doubt, at trial, every element of this crime — which we’re prepared to do.” “Can you and will you let the public know what any of those other facts are?” Welker asked. “Absolutely,” Blanche replied. “It’s called a trial. That’s what happens at every single case. We indict thousands of cases every year. Every one of those cases, there’s an indictment and then eventually there is a trial or some sort of disposition. At the trial, a public trial, that will be open to the public, everybody in this country will know exactly… [TheTopNews] Read More.1 hour ago - Jake Tapper Confronts Jeanine Pirro With Clip of Tucker Carlson Suggesting Trump...Jake Tapper, in a CNN interview Sunday, confronted U.S. Attorney Jeanine Pirro about Tucker Carlson suggesting President Donald Trump could be the “antichrist” “There’s obviously a lot of incendiary language out there, horrific language out there,” Tapper said during the interview on CNN’s State of the Union. “I just quoted from some of it from the from the alleged [White House Correspondents’ Dinner] shooter, who didn’t get that from nowhere. That’s a lot crazy people saying a lot of horrific things. I want to play Tucker Carlson, your former colleague at Fox, last month talking about the president.” Tapper threw to the clip — in which Carlson said, “here’s a leader who’s mocking the gods of his ancestors, mocking the god of gods, and exalting himself above them. Could this be the antichrist?” “That seems incendiary too, no?” Tapper asked Pirro. Pirro dodged the question. “You know, whatever Tucker Carlson says is not relevant to me right now,” Pirro said. “I really don’t care about what he says. All I care about are the facts, the evidence, and what I can prove. All of this other stuff is noise.” Moments later, Tapper followed up by comparing Carlson’s comments to the social media post from former FBI Director James Comey — in which Comey posted an image of seashells arranged to depict the numbers “86 47.” Comey, on Tuesday, was indicted over that post. “Another former colleague of yours, Jonah Goldberg, says that to him — and I’m paraphrasing here — what Tucker said about the Antichrist is more incendiary than what James Comey posted on Instagram,” Tapper told Pirro. “And while not defending what James Comey did post on Instagram, do you see Jonah’s point?” “You know, I’m really not here as a political pundit anymore,” Pirro replied — again sidestepping the query. “I’m here as prosecutor. My job is to decide whether or not I have evidence and whether — I’ve got 30 years in this, a prosecutor, a DA, a judge, and now the United States attorney. My job to not talk about talking heads and what they say. My job is to come here and offer to you, CNN, any evidence that we have that will answer the questions you have.” Watch above, via CNN. The post Jake Tapper Confronts Jeanine Pirro With Clip of Tucker Carlson Suggesting Trump Could Be… [TheTopNews] Read More.2 hours ago
- Trump Hits New Low in WaPo/ABC Poll — Whopping 76% Disapprove of His Handling ...
(AP Photo/Mark Schiefelbein) President Donald Trump hit an all-time low in disapproval in the latest Washington Post/ABC News/Ipsos poll — notching a particularly dismal score on one major issue that seems certain to spell trouble for his party if it holds through November’s midterm elections. According to the poll published Sunday morning, Trump came in at 37 percent overall approval — a number very much in line with other recent surveys which show him languishing in the mid-30s. His disapproval in the poll was 62 percent, and that represents an all-time low for him in the Washington Post/ABC News/Ipsos poll. At no point in either his first or second terms has he hit 62 percent disapproval in that survey. And a big part of the reason why seems to be the economy. The poll found that just 34 percent of Americans approve of Trump’s handling of the economy overall. And the numbers get even worse on several adjacent issues. Only 27 percent of respondents approve of the president’s handling of inflation. And a paltry 23 percent approve of how Trump has dealt with cost of living — with a massive 76 percent giving him a thumbs down on cost of living issues. Trump is underwater by at least 9 points uon every single issue polled by the Post, ABC and Ipsos. His handling of immigration at the U.S.-Mexico border is approved by 45 percent of Americans, compared to 54 percent who disapprove. But on most of the major issues on which the poll asked respondents to weigh in, the president was underwater by 20, 30 and even 50+ points. RealClearPolitics, which averages all major polls, currently shows Trump at 40.9 percent overall approval. That number will drop once the Post/ABC/Ipsos poll is factored in. As concerning as the poll might be for Trump, his approval rating remains higher than that of his vice president and other major figures in his cabinet. The Post/ABC/Ipsos poll found only 35 percent of Americans approve of Vice President JD Vance’s job performance, while 29 percent approve of Defense Secretary Pete Hegseth and 27 percent approve of FBI Director Kash Patel. ——The post Trump Hits New Low in WaPo/ABC Poll — Whopping 76% Disapprove of His Handling of Cost of Living first appeared on Mediaite. [TheTopNews] Read More.4 hours ago - Kash Patel Gets Absolutely Smoked in Punishing SNL Sendup By Aziz Ansari: ‘Iâ€...FBI Director Kash Patel got the SNL cold open treatment Saturday night — in a portrayal by actor/comedian Aziz Ansari that was nothing short of devastating. Ansari dropped into the sketch about halfway through — introduced at a White House briefing by Defense Secretary Pete Hegseth (played by Colin Jost). And the former Parks and Recreation star proceeded to lampoon Patel — calling him out for overall incompetence and reported excessive drinking. (Patel has vehemently denied that report from The Atlantic and has sued them for defamation.) “You guys should not be reporting the lies and the gossip, you should be reporting on the historic nature of my appointment,” Ansari’s Patel said. “I’m a trailblazer. I’m the first Indian person to suck at their job! Everyone says Indian people are smart, hard-working, incredibly intelligent. I’ve proved without a shadow of a doubt that we can be just as incapable and incompetent as the whites!” A reporter in the faux briefing asked Patel if he’d been locked out of his email account — based on an incident in which The Atlantic reported Patel was temporarily locked out of his accounts and thus believed he had been fired. “That’s just more lies,” Patel said. “I’ve always been able to log into my email except for a brief 36-hour period of time when I forgot I had changed my password to KashMeOutside69.” But Ansari’s rollicking sendup hit another gear when he got to the issue of alcohol. “Let me be clear, this FBI director has never been drunk or hungover on the job,” Ansari’s Patel said. “This FBI director never filled a 40 ounce travel mug with ice cold gin and a swirl of dry vermouth and six lemon peels and called it a Kashtini. This FBI director has never used taxpayer dollars to take a private jet to fly him and his girlfriend to three different Buffalo Wild Wings locations across the country to see if they could taste the difference. And this FBI director has definitely not stood on top of a couch at the VIP room of Tao Nightclub and Asian Bistro and shouted, ‘Who wants the nuclear codes?! JK, I ain’t got them!” Watch above, via NBC. The post Kash Patel Gets Absolutely Smoked in Punishing SNL Sendup By Aziz Ansari: ‘I’m the First Indian Person to Suck at Their Job!’ first appeared on… [TheTopNews] Read More.5 hours ago
- Trump Demands GOP ‘TERMINATE’ the Filibuster With Dems Hiring ‘SLEAZEBAGSâ...
President Donald Trump talks to reporters before he boards Air Force One at Palm Beach International Airport in West Palm Beach, Fla., Saturday May 2, 2026, en route Miami. (AP Photo/Matt Rourke) President Donald Trump urged Congressional Republicans to “TERMINATE THE FILIBUSTER” once again on Saturday as a way to proactively combat Democrats using “SLEAZEBAGS” like former Attorney General Eric Holder to investigate election integrity. “GET TOUGH REPUBLICANS — THEY’RE COMING, AND THEY’RE COMING FAST!” Trump posted on Truth Social. The president said it must be done to stop Democrats from rigging the 2026 midterms and 2028 election, just like they “RIGGED” the 2020 election he lost to ex-President Joe Biden. “So ironic that Cryin’ Chuck Schumer and the Democrats are hiring SLEAZEBAGS like Barack Hussein Obama’s Crooked former Attorney General, Eric Holder, and others of that ilk, to look into Voter Integrity, when this same group of Human Garbage RIGGED the 2020 Presidential Election,” Trump said. He continued bashing the Dems from there: They’re no good for our Country, they almost destroyed it, and we don’t want to let that happen again! These are highly dishonest people who are, in many ways, treasonous, in that they are trying to destabilize the United States of America in what, some would call, a War. Republicans must TERMINATE THE FILIBUSTER, and approve all of the necessary Safeguards we need for Elections to protect the American Public during the upcoming Midterms. MAKE AMERICA GREAT AGAIN! President DONALD J. TRUMP Trump’s post comes a few days after Schumer announced a new task force that aims to “shield” the 2026 midterms “from the direct threats posed by President Trump and MAGA Republicans.” Schumer said Holder was participating as an “expert/advisor” to the group of senators. The New York liberal accused Trump of pushing the SAVE Act — which calls for proof of citizenship to vote in federal elections — “to disenfranchise tens of millions of Americans.” Schumer added the task force is necessary because Trump has “stacked his administration with election deniers.” Trump has called for Republicans to nuke the filibuster multiple times since he returned to office in 2025, including last December when he said it was “hurting” the GOP. And some Republican lawmakers have said they are on board. Senator Ron Johnson (R-WI) called for scrapping the filibuster so that Congressional Republicans can fund the Department of Homeland Security last week, one day after… [TheTopNews] Read More.16 hours ago
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