Control Of An Electric Circuit

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            Locomotive characteristics, Command systems, Control systems, European railways.

The paper show the function parameters of locomotive components “Loco 2000”, putting accent from their maximal values; the mode who works the force circuit, insisting of modulation technique necessary to obtain a high power factor and to eliminate harmonics. Is described the mode in who are realized the speed regulation and the afferent exploitation data. In the ultimate part of work is presenting the operation mode of the command-control MICAS-S2 system, the different commands imposed to others components (of the force circuit) and, in finale, the three diagnostic levels putting in service in case of troubles in system.Read more on
Tactical VHF radio unit was manufactured in "RIZ Zagreb" factory (ex Yugoslavia) in 1978. and was a completely new solution in relation to the Radio set RUP-3. Also as RUP-3 has frekvency range from 52MHz to 59.95 MHz frequency modulation FM, but had direct frequency synthesizer and channel was choseing with three selectors. Transmitter output power is the same - 0.3 W. It is powered by two 8.4 VDC 500 mAh rechargeable NiCd batteries type 7ACH-1, produced in the factory "Krusik" - Valjevo (ex Yugoslavia), or in the far needy 4 of the 4.5 VDC batteryRUP-33.

In the development of applied technology printed circuits, MOSFET transistors and integrated circuits. In the receiving part intermediate frequency amplifier there is a crystal filter Institute Mihajilo Pupin (ex Yugoslavia), which increased sensitivity and resistance to interference device. Set of the device consisted: tranceiver, rod antenna type AT-11, handset type MK-2A, sources of electrical energy, bag and belt for carrying.

Technical Specification: Frequency Range: 52 - 59.95 MHz, Output Power: 0.3 W; Modes of Operation: FM; Power Requirements: two 8.4 VDC 500 mAh NiCd batteries;
It is every music lovers dream to accept those cool alarming speakers that can aftermath apple ballyhoo sounds. Goldmund has through the years provided us with amplifiers that advice us accomplish those sky aerial decibels. It has afresh appear up with amplifiers to beef your speakers.

The Goldmund Telos 250 is one beggarly machine! This new address amplifier replaces the Telos 200, incase it wasn’t acceptable abundant for you. Telos 250 appearance a beyond anatomy able with bigger automated grounding. Making acceptable use of the new capacitors developed from the Telos 5000, this amplifier has a essentially bigger “driver control”.

Wired with a Telos ambit and built-in-digital input, it additionally has a congenital D/A Alize 5 converter. All this makes the Telos 250 accord you college power. Now alert to all this, all those arch bangers charge be salivating aloof cerebration about the roof-shattering sounds this amplifier creates. But I accept some sad account for you. If the name Goldmund is not accustomed to you, let me acquaint you that it is a Swiss architect accepted for its ultra aerial end offerings. Hence the amount tag on this babyish is actual actual abundant at $13,800.
Orange Amplifiers OPC is a computer amplifier speaker that integrates a computer with an internal speaker, recording software, a

Gearhounds, get your O-face on: Orange Amplifiers has introduced the OPC, an all-in-one computer amplifier speaker that integrates a computer with a high-end internal speaker. The OPC is a musician's toolbox with a handle, offering the capability to play, record, edit, and compute.

According to the manufacturer, the OPC represents a number of "firsts." It's the first computer of its kind that connects directly to your instrument; it's the first to have a built-in, high-powered speaker that delivers full range, high quality sounds and vintage guitar sounds; it's the first computer to have a universal input jack that lets you plug in musical instruments like guitars and keyboard or other devices like MP3 players and microphones. The OPC also has a unique cooling system that ensures that air goes in and exits only after cooling the internal computer.

The OPC has 4GB DDR2 RAM, a 500 GB hard drive, Intel chips, Windows 7 (64-bit) OS, 8 USB 2.0 ports, wi-fi, an integrated GeForce 9300 graphics card with an optional dedicated ATI 5670 512 MB card (for those who want to play a few games while playing music), and more.

Orange notes that the first models will include modeling software incorporating computer samples of vintage and current Orange amps and cabinets, as well as a free branded recording software package. Once plugged in, you can use the included software to create music or choose your guitar sound and then play, record, and hear your guitar through the computer.

Expect the OPC to be released in June, 2010. Pricing is TBA. For further details, visit
At Cool Tools, Jeff Bragg reviewed the Roland MicroCube, a nifty small amp that has digital modeling to emulate the sounds of different classic, larger, amplifiers. On Amazon, it can be found for as little as $119. This little amp has been around for about four years and is loaded with features closely related to its larger, louder cousins. The controls on the top provide a wide range of sonic possibilities. Along with a knob for tone, there are controls for gain (think distortion control) and volume. Most importantly, the MicroCube uses digital modeling to make it versatile and good sounding. What's digital modeling? That's where you take a bunch of great-sounding full-size amps and digitally sample the sounds they make and then apply that to the sound architecture of another amp. Cool Tools: Roland MicroCube Portable Guitar Amplifier
Jason von Nieda put together this awesomely dramatic vacuum tube clock built around a Russian IV-18 nixie tube. He cites Adafruit's Ice Tube Clock for inspiration and credits John Pfeiffer for the enclosure design.
Ever admiration what goes into the architecture of a exhaustion tube audio amplifier? Well, radio architecture adept Greg Charvot has you covered with his latest presentation, architecture your own exhaustion tube audio amplifier. The slides are appealing abundant on engineering architecture terms, but accord a acceptable feel for what it takes to assemble and tune an audio amplifier application exhaustion tube technology. If you are bottomward with Bode plots and ambit diagrams, though, it could serve as a nice addition to architecture a chic AB amplifier circuit.
Instrumen Amplifier Exhibits Zero Drift Promising to simplify pressure and thermocouple bridge measurement, the LMP8358 debuts as the industry’s first zero-drift, programmable instrumentation amplifier with on-chip diagnostics, a capability that prevents circuit shutdowns. The device employs patented techniques to measure and continuously correct its input offset voltage of 5 mV typical, eliminating offset drift over time and temperature as well as the effect of 1/f noise. This leads to a flat noise spectrum of 27 nV/ÖHz. The LMP8358’s programmable frequency compensation enables programmable bandwidths and its offset compensation circuit allegedly does not introduce distortion and aliasing for signals lower than 12 kHz. Other features include EMI suppression filters, glitch-free transitions between gain settings that are programmable to 10, 20, 50, 100, 200, 500, or 1,000 through a SPI or parallel interface, operation from a single 2.7V to 5V supply, an operating temperature range from -40°C to +125°C, a 10-mV maximum offset voltage and 50 nV/C maximum offset voltage drift, gain bandwidth of 8 MHz, and a power consumption of 1.7 mA. Price for the LMP8358 is $2.71 each/1,000. NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.

via electronicdesign
ROCKTRON REPLITONE 60 watt modeling amp This amp has the PATENTED HUSH circuit that ROCKTRON SELLS EVEN SEPARATELY IN A RACK FOR OTHER AMPS it quiets those idle pink noise that irritates all pedal boards New RepliTone combo amps. Get the sounds the players get with a powerful DSP combo amp that models the artists, not just the amps. DSP effects ... based on Rocktron’s Intellifex. This amp series features Digital Tube Replication technology (DTR) to replicate the artists and their many vintage and modern amplifiers. Tweeds, Plexi’s, Fuzz Tones, Jazz Tones as well as Thrash, Class A, 70’s Style and many more with ease. Each replication features all of the dynamic characteristics of the original tones including EQ, gain structure and attack dynamics, and the FEEL of the REAL THING.
Rocktron’s new DTR technology HUSH noise reduction 30 programmable presets w/MIDI interface Stereo 24-bit digital effects 16 vintage and modern amplifier replications 60 watts (per side on 212) Tap tempo delay and trem rate Stereo headphone output with speaker simulator Traditional look and operation Real amplifier controls Dozens of effect configurations

The RepliTone series features a programmable 24-bit DSP effect section with effects such as delays, choruses, flange, phaser, compressor, wah, tremolo, rotary speaker and reverb. Dialing in just a right amount of effect is made easy by using the Effect Select knob to select the effect and adjusting the Effect Adjust knob to modify it. Delay time or Trem Rate can be set on the fly with the Delay Time and Rate buttons. 30 MIDI programmable presets (which can be switched via any MIDI controller or by an optional 4-button footswitch) and stereo effect loop make it very easy to use tons of tones in any live situation.

The studio is also a perfect place for the RepliTone amps. Not only can you achieve almost any tone you want, you can use the Headphone output with speaker simulation to run the RepliTone amps direct in stereo.

The controls of the RepliTones are laid out in a traditional amp style with knobs for adjusting Bass, Mid, Treble, Gain and Volume. Additional controls for Effect Adjust, Reverb Level, and Delay Level make it extremely simple to use and adjust in those real critical moments on stage.
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via craiglist
Fire alarm system is a topic that is always interesting to try. This is because it involves a microcontroller, temperature sensor and smoke and programs in the LCD viewer. This application is a demo of the fire alarm using ATmega AVR Microcontroller 8535, which is already available on-chip 10-bit internal ADC with 8 channels.

Tools required for this application experiment:
1. ATmega AVR Smart 8535 or any other AVR sismin already supports serial communication.

2. 2 LM 35 temperature sensor

3. Sensor Smoke / Gas AF30

4. Digital Multimeter

5. 12V adapter

6. Relay Board

7. Buzzer and spray

Block Diagram

We need a temperature sensor LM35 as a fairly linear measuring range of 0-100 degrees Celsius. 2 sensors fitted to PA.0 and PA.2 as a demo at the room temperature measurements inside and outside. While the humidity sensor has an analog output with a range of type 808H5V5 0.8V - 3.9V connected to PA.1 .. If you want to have a temperature sensor chip cooling, use the type LM35DT

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This SPI Beam Programmer can be acclimated either for in-system programming or as a stand-alone consecutive beam programmer for the Atmel SPI programmable devices. The programmer accouterments interface is controlled by the PC alongside anchorage and the alongside anchorage ascendancy signals are advisedly selectable by the user. The software supports both the 8051 and AVR alternation devices.


Figure 1 shows the ambit diagram of the SPI Beam programmer accouterments interface, the ability to the interface is provided either by a 9V dc adapter or a 9V battery. The 74HCT367 IC absorber the alongside anchorage signals. It is all-important to use the HCT blazon IC in adjustment to accomplish abiding the programmer should additionally assignment with the 3V blazon alongside port. The 74HCT04 is acclimated to accomplish the alarm arresting for the u-controller back programming the accessory in stand-alone mode.
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