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
Friday, May 06, 2016
Experiments with the LM2575
Here is a nice way of using this regulator, this can be used for CMOS opamps as you have a -5V too. That means a portable instrument may find this design useful.
The TI Datasheet Layout Guidelines
LM2575 - Step-Down Adjustable Voltage Switching Regulator with Output Enable
The LM2575 represents a superior alternative to popular three-terminal linear regulators. Due to its
high efficiency, it significantly reduces the size of the heat sink.
The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown.
Monday, December 08, 2014
List of battery sizes - Wikipedia
4.5 Volt - D - C - AA - AAA - 9 Volt - SR41/AG3 - SR44/AG13
Battery Charger Circuits and Resources
Solar charger for lead-acid batteries
The charger will stop charging once a pre-set voltage (temperature compensated) has been reached, and recommence charging when the voltage has dropped off sufficiently.
12 Volt Gel Cell Charger
When a discharged gel cell is connected, the charger goes into a fast charge mode at a fixed rate of 400 ma. After the chip detects the voltage leveling off or when 4 1/2 hours has elapsed.
Temperature Controlled NiCd Charger
This circuit is for a temperature controlled constant current battery charger. It works with NICD, NIMH, and other rechargeable cells.
Battery charger 150-1700 mAh with PIC16F876
This is the extension of the simple battery charger to different battery capacities. The software and the controller are largely identical.
MAX846A Cost-Saving, Multichemistry, Battery Charge Chip
In its simplest application, the MAX846A is a stand-alone, current-limited float voltage source that charges Li-Ion cells. It can also be paired up with a low-cost microcontroller (µC) to build a universal charger capable of charging Li-Ion, NiMH, and NiCd cells.
Rechargeable Batteries and Chargers
There are three types of rechargeable batteries. They are Nickel-Cadmium (NiCd), which are the oldest type; Nickel-Metal Hydride (NiMH), which were developed around the same time that low-cost digital cameras were invented.
Monday, January 07, 2013
True Power Research - Robert W. Stowe
DC to DC, AC to DC, and DC to AC conversion methods. Switch mode as well as linear power supplies. Specialized in high voltage power supplies and low noise and low ripple power supplies.
The Isolated Power Supply — A Tutorial
"Electronic power supplies commonly process dangerous voltages with low impedances. Isolation is often required to prevent operator contact with dangerous voltages. Transformers used within power supplies function as a safety isolation transformer."
True Power Research
Robert W. Stowe (Bob) - Power Supply Design Consultant
850 10th St., Berthoud, CO 80513, USA
Monday, May 16, 2011
Develops and Manufactures products to improve power conversion efficiency. Integrated circuits and RF power devices. ASICs, Pulsed Power Systems and Laser Diode Drivers also in their product portfolio. RF
They have HVIC chips for medical, telecommunication and power management applications including off AC line LED drivers. They also Zilog family of MCU's after Zilog Corporation became an IXYS Company.
They have under their Umbrella ...
MicroWave Technology, Inc. is a leading manufacturer of RF & Microwave Discrete Semiconductor Products.
Clare, Inc., A leader in the design and manufacture of solid state relays and high voltage integrated circuits. Shown on right is the IXDN609 a 9 Amp Low-Side Ultrafast MOSFET Driver.
Founded 1983, Corporate headquarters in Milpitas, California. - IXYS
Address -1590 Buckeye Drive Milpitas, CA 95035-7418 United States. - IXYS Map
Tuesday, December 08, 2009
Hendon Semiconductors - Microelectronics Design
History -"The Hendon business site in Adelaide, South Australia has been a long established integrated circuit design and wafer fabrication facility in Australia, from its Philips semiconductor background up to 1997..."
Thick Film Hybrid Technology
The advantage of ceramic hybrids over fiberglass printed circuit is their high reliability due to their inherent rugged construction with the following advantages:
Hendon Semiconductors Pty. Ltd
ABN: 17 080 879 616, 1 Butler Drive, Hendon, South Australia 5014, Australia.
Monday, January 12, 2009
Interactive Power Electronics Seminar
Power Electronics Circuit Simulation
Applets to See - are the simple Buck-converter and the Rotating Three-Dimensional Field
More pages of Compulsory Reading for Students
- Part I - An Overview of AC/AC-Converter Topologies
- iPES-Circuits - DC/DC converters, thyristor converter, AC/DC inverter.
- iPES-Circuits+ - Power electronic systems of higher complexity in industry.
- iPES-Thermal - Dimensioning and operation of power electronic converters
- iPES-EMFields - Electrostatic, magnetic fields, permeability, inductor design.
- iPES-AET - Operational Amplifier - Applications.
Power Electronics Simulation -Specialized Software to meet demands of Power Electronics Engineers. Gecko-Research is engaged in numerical simulations of circuits, control, 3D-thermal, electromagnetics, reliability issues and system optimization.
WEBENCH Power Designer and Architect
Power Designer - Expert Tips and Techniques for Power Supply Design. Examples - Simple Switcher, Power Supply, Voltage References, Lighting, Battery Management, Voltage Regulators, DC-DC Voltage Converters.
WEBENCH Power Architect lets engineers quickly design and simulate a complete power supply system for any number of supplies and outputs. System designers can optimize the entire power supply system for small footprint, high efficiency, and cost in minutes.
- Quickly design and simulate your entire power supply system
- Easily configure the power supply load requirements for voltage and current
- Optimize the overall footprint, efficiency, and BOM cost for the entire system
- Get the schematic and BOM for the complete power supply system
- Perform electrical simulation and thermal simulation
Thursday, April 17, 2008
International Rectifier - Power Semiconductors
- Reference Designs
- HEXFET Power MOSFETs
- High Voltage Gate Drivers
- Integrated Circuits
The IRADK-S10UP60 is an Evaluation kit for the 6A and 10A IRAM Integrated Power Modules in SIP1 packages. These modules are optimized for electronic control of 3- phase motors in a variety of industrial and appliance applications in the 400W to 750W power range.
101 N Sepulveda Blvd. El Segundo, CA 90245 USA
Updated Aug 2013
Monday, May 07, 2007
Lazar's power electronics corner, smps switching power supply design, circuits, schematics, pcbs, electrical engineering reference, software, and other free web resources.
SMPS design, Tutorial, PCB design, Generators, Computer PSU, UPS, Magnetics, EE Reference, Inverters, Thermal