Monday, February 06, 2017
The design is entirely controlled by a simple ST7FLITE09Y0 8-bit microcontroller, which provides the PWM driving signals, communicates information to the user interface, and drives the fan and relay control to the plate feedback.
With Single Voltage Flash Memory, Data Eeprom, Adc, Timers, Spi Active - ST7LITE09Y0 8-Bit Mcu
A single plate induction cooker with the ST7FLITE09Y0 PDF - Excerpt From Application Note above AN2383 Application note -
Put simply, an induction cooking element (what on a gas stove would be called a "burner") is a special kind of transformer. When a good-sized piece of magnetically conducting material such as, for example, a cast-iron frying pan, is placed in the magnetic field created by the cooking element, the field transfers ("induces") energy into the metal. That transferred energy causes the metal - the cooking vessel - to become hot.
By controlling the intensity of the magnetic field, we can control the amount of heat being generated in the cooking vessel and we can change that amount instantaneously.
Induction cooking functions based on the principle of the series L-C resonant circuit, where the inductance L is the cooking element itself. By changing the switching frequency of the high voltage half-bridge driver, the alternating current flowing through the cooking element changes its value. The intensity of the magnetic field and therefore the heating energy can be controlled this way.
The +325 V DC link voltage is applied through a filter to the upper-side IGBT only when the safety relay is closed and the system is on. Components inside the dotted rectangle are the core part of the power stage: the L-C resonant tank is obtained by the plate (represented in the schematic by a spiral) and the capacitors on the left side. The resonant capacitor has been divided in two identical capacitors, so that the amount of current flowing through each capacitor is reduced by half, while the voltage to the capacitors remains the same.
Induction heating is a non-contact heating process - Richie's Tesla Coil Web Page
Tuesday, April 23, 2013
This was one of the Mags along with Radio Electronics that made me a better designer. Radio Electronics was my first favorite mag.
Elektor Electronics - EE Circuits Projects
They also have some of the issues for download. Some nice projects too are available with code for reference and experimenting.
Online Store and Members Area
They have a Forum for Discussion and Displaying your Completed projects. Even seek help when stuck with your project.
Then a Kits and Tools Store where you can buy the things you need to make the Electronic Projects, ..
I though it was time i made a collage for my old guru, then even i am getting older. I wish there was an Internet when i was young. Time to use my rusting Time Machine, Bye... Ananth delabs
Updated Sept 2014
Monday, August 10, 2009
Bill O'Donnell - Tech Gizmo Builder
These projects are advanced and not for a beginner student or newbie hobbyists. These pages are knowledgable and will help students and DIY enthusiasts understand more about Lasers, Precision Temperature Control and stepper motors among other things.
Auto Fill Circuit for Laser Cooling Loop - Ethernet Data Logging
Here is an automation solution with a ethernet usage. The code and diagrams are also there. This is something that covers many aspects of engineering in one project. Try such things out to learn, only after you have mastered the basics.
"The Ethernet connection is based on an XPORT form Lantronics. Basically it lets you use a serial port to send things over Ethernet. A PIC microcontroller with an A/D converter digitizes the pressure, the pressure set point, the high and low pressure alarm points and the supply voltage (since everything is ratio-metric). "
Friday, August 03, 2007
The intention of this project is to design and build a working ion transducer using modern solid-state devices for high efficiency which can be used as a high-quality sound reproducer.
- Audio input subsystem.
- Flame control subsystem and interface.
- Oscillator subsystem.
- Power supply subsystem.
Tuesday, July 03, 2007
LM3914 - Versatile and Easy use Display
- Drives LEDs, LCDs or vacuum fluorescents
- Bar or dot display mode externally selectable by user
- Expandable to displays of 100 steps
- Internal voltage reference from 1.2V to 12V
- Operates with single supply of less than 3V
- LED driver outputs are current regulated, open-collectors
My LM3914 Circuits
Millivolt Meter using a LM3914 LED Dot Display
Monday, May 07, 2007
Universal Radiation Spectrum Analyzer, Jornada Cradle modification and How to Make a Serial Cable, Multi-channel Analyzer Program for the Universal Radiation Spectrum Analyzer, DC Motor Speed Control, Two Channel Platinum Probe Serial Thermometer, Single Channel 24 bit USB ADC and others.
Saturday, December 09, 2006
A collection of information on a variety of topics. Finished projects, Some ideas, Repair tips.by San Bergmans, Oisterwijk, The Netherlands.
A pair of dice is the first small example application I present here. The interface is nothing more than 2 sets of 7 LED's, arranged in the form of two dice. One push button per die completes the interface circuit
The Dice Game on 6802 Nano computer.