Tags555-Circuits 8051-8052 Aerospace-Hobby Arduino ARM Australia AVR-ATmega Bicycles Canada Components-Parts Design-Spice-Simulate Deutsche-German France Greece Ham-Radio HandyCrafts Hobby-Circuits Hobby-Groups Hong-Kong and Taiwan IDE-Compiler-Assembler Lamps-LED Machines-Tools Magazines Model-Railroading Netherlands-Belgium Nordic-Countries Olden-Circuits Photography PIC-Micro Power-Supplies Radio-Control-RC Raspberry Rest-of-Asia RF-Circuits San Schoodles Science-DIY Software Solar-Energy Switzerland Test-Measurement UK-Ireland USA Vacuum-Tubes Wireless-Web
Here is a collection of web pages of VU Meter projects that helps a newbie getting into the Electronics DIY Hobby Land.
A Hobby now in your School days or College can help you build a strong profession later. It is Edutainment that will make productive use of your spare time. Friends can do it as a group, during holidays. Parents should encourage healthy hobbies, as the children will grow in a positive and creative atmosphere.
Stereo led level meter – This is it. It’s a STEREO LED LEVEL METER. It’s the cheapest and best bar graph display available and best of all, it uses readily available components.
VU-meter by Archy – Then it hit me. A VU meter, big, beautiful, professional! From that moment started my thoughts flowing. Those VU-meter ICs that are sold in every electronics shop?
LM3914 dot-bar display driver – The LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display.
Knight Rider Display Project – This project started out as a VU meter. I reused parts and pieces to improve the VU meter and give it additional functionality. It is amazing how much time it takes to create a small thing like this.
Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer’s sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal – which can be music, speech, or output from an electronic circuit.
Zelscope Sound card oscilloscope
Zelscope features the interface of a traditional oscilloscope, with conventional gain, offset, timebase, and trigger controls. As a real-time spectrum analyzer, Zelscope can display the amplitude and phase components of the spectrum.
The typical input voltage should be about 1 volt AC at the line-in jack of the sound card, so a voltage divider or a buffer amplifier is highly recommended.
xoscope for Linux – Similar Ptoject
Zelscope also allows for an easy measurement of short time intervals in mechanics experiments. Zelscope has proven useful in debugging music and sound processing software.
Hobby Electronics, Computing, Kits and Projects. Online version of Australia’s only electronics magazine, and is primarily directed to professionals, trades people and enthusiasts in the electronics, electrical, computer and related fields.
Projects to build do it yourself to save money, to learn new skills or simply for the fun of it!. Serviceman’s Notebook Actual cases, often unusual, from the bench of a full-time serviceman. Vintage Radio bringing back to life the discards of previous generations.
Each Silicon Chip design is carefully checked and tested and readers with the appropriate construction skills should be able to duplicate the design and have it work in the same or similar manner to the prototype.
40 Watts Hi-Fi Music System
Stereo Music player with Tuner, 1986, LED VU meter and Analog VU meter.
This was done as repairing home electronics was my hobby in school days, I learnt by building Amplifiers based only on transistors from the Old Philips Circuits and Books.
The above one is TDA2020 20 Watts Per Channel, with LED input level meter and moving-coil output meters. It would have a 5 pin din input and RCA speaker output, input for phono, tape, etc. The Speakers had a woofer, tweeter and midrange with passive crossover network.
Stereo Adapter for Portable Music Player
Low Cost Stereo Adapter 20 Watts for Portable Music Player 1984, Bass Treble and Presence.
This was a TB810 based 10+10 Watts Stereo Amplifier with LM381 or 2 Preamplifier, The portable player docks in a wooden cabinet. There was no IR, Wi-Fi or Bluetooth in those days, so the device would interface with amp thru a stereo ear-phone socket-jack system with a shielded cable. Bass, treble and Presence as per an old phillps audio amp book.
Designing Bipolar Transistor Audio PreAmps, Designing JFET Transistor Audio PreAmps, Designing Op Amp IC Audio PreAmps, Switching Regulator Basics, Using Transistors As Switches.
- 10 Amp, 13.8 Volt Power Supply
- 12 Volt Gel Cell Charger
- Thermal Fan Controller
- Transistor Audio Amplifiers
- 12 Volt Gel Cell Charger
- Switching Regulator Basics
“I intentionally avoided the use of IC amplifiers to provide a real learning experience for audio amplifier design. Although many IC amplifiers provide excellent performance at low cost, we need to learn the basics first. I will address IC audio amplifiers in a future article.”
The Radio Amateur Society of Norwich
P.O. Box 329 – Norwich, Connecticut 06360
Large stockist and supplier of electronic components throughout the world. The Electronic Components and Semiconductor Superstore.
Integrated Circuits, LED’s / LCD’s, Connectors, Microcontroller Boards, Hardware, Project Boxes, Stepper Motors.
“Orders from hobbyists and single part orders are most welcome. We do not have any minimum order charge and we welcome all customers from anywhere in the world.”
These small compact boards are ideal to enhance your control system or development project. Add new functions and expand the functionality of your system, with a wide range to boards to choose from, including MP3, Real-Time Clocks, Keypads, RS232, RS422, Flash Memories, SD Cards and many more.
1133 Broadway, Suite 706, New York, NY 10010 USA
Some things you can find there -CB & Ham radios, Walkie-talkie (GMRS/FRS) radios and Shortwave & multiband radios.
The company was started as Radio Shack in 1921 in Boston, Massachusetts, by two brothers, Theodore and Milton Deutschmann, who wanted to provide equipment for the cutting-edge field of amateur, or ham radio.
Theodore and Milton Deutschmann opened a one-store retail and mail-order operation in the heart of downtown Boston. They chose the name, “Radio Shack,” which was a term for the small, wooden structure that housed a ship’s radio equipment. The Deutschmanns thought the name was appropriate for a store that would supply the needs of radio officers aboard ships, as well as “ham” radio operators.
The first 40 years – RadioShack Corporation – Wikipedia