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Back when the East Perth Power Station was built (around 1916) the powers that be asked a renowned electricity expert what frequency the station should generate at. He recommended 50 hertz, so (naturally) they decided to build the station at 40 hertz.
This was fine for a while, but by the 1940s 50 hertz was established as the standard, and East Perth's eccentric 40 hertz was causing big problems on the power grid. The solution was to build a big-ass transformer to kick the frequency up ten hertz and route the entire station's output through it.
Which is what they did - constructing the frequency switcher building to hold it.
Ain't industrial history grand?
Mecha style 3d graffiti inspired by different anime styles. View more graffiti designs here graffititechnica.com/
CAMP WILLIAMS, Utah, June 25, 2015 - Georgia Army National Guard Spc. John Pettas loads frequencies into a Single Channel Ground to Air Radio System (SINCGARS) in preparation for delivering a situational report (SITREP) during the national "Best Warrior" competition's eight-station warrior tasks event.
This event tests competitors on warrior tasks including land navigation, searching an individual and employing a live 240 claymore mine.
(Georgia National Guard photo by Sgt. 1st Class Gerard Brown | Released)
Specifications TRX-1:
Stylus type: nude PH line contact (vital II)
Cantilever: titanium tapered tube
Output voltage: 3mV
Channel balance: within 1dB
Channel separation: more than 30dB
Frequency response: 20 to 26,000Hz
Tracking force: 1.2g
Load resistance: 47K ohms
Weight: 6.5g
Specifications TRX-2:
Stylus type: nude PH line contact (vital III)
Cantilever: sapphire tube
Output voltage: 3mV
Channel balance: within 0.5dB
Channel separation: more than 30dB
Frequency response: 20 to 30,000Hz
Tracking force: 1.2g
Load resistance: 47K ohms
Weight: 6.5g
Price 36,000 Yen
IM-type power generation system
40 × 10-6cm/dyne Compliance
Needlepoint 0.32 × 1.57mil (VITAL Ⅱ)
Needle exchange ■ RTRX-1 (Yen18,000)
■ July 1983 Release
Discontinued circa 1989 ■
Around 1983 the price ■ Note
This is an item from the Ghostbusters Collection, completely hand-made and one of a kind.
Sean McCullough, creator of McCullough's Miscellanea, creates each piece completely by hand. As he collects items here and there, no two pieces will ever be the same. Materials often used are plastic, cardboard, and wire.
This item is currently for sale. However, the majority of the creations from McCullough's Miscellanea have started falling apart. I wish you good luck!
Have a question or other inquiry? Contact Sean!
Facebook: www.facebook.com/mccmiscellanea
Email: ductel762@gmail.com
The first thing that we did with a new Infinity 12" subwoofer that was purchased (for home, and not lab use), was to hook it up to our frequency generator and put it through a few paces. The sub is rated at 28 to 150 Hz, and, apparently, the resonant frequency of our conference room is approximately 47 Hz. Check out the video of it in action, and see our blog post!
It's a Microcontroller Based DIY Electronics Project. Named Wireless RF Module Using PIC Microcontroller. The RF module is a small electronic circuit used to transmit, receive, or transceive radio waves on one of a number of carrier frequencies. RF modules are widely used in consumer applications such as garage door openers, wireless alarm systems, industrial remote controls, smart sensor applications, weather monitoring system, RFID, wireless mouse technology and wireless home automation systems. They are often used instead of infrared remote controls as they have the advantage of not requiring line-of-sight operation. Stay tuned for Furthur Links, Thanxx.