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Rechargeable AA cells are very popular for a large variety of portable applications. The number of brands is also high, and the cell quality can differ considerably. Cell capacity is sometimes different from that specified, and the capacity often deteriorates dramatically after a limited number of discharge cycles. ....
See Maxim Application Note - Simple Characterization Circuit for Rechargeable AA Cells
PDF Copy - Simple Characterization Circuit for Rechargeable AA Cells
Resources
The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application.
The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.
View Application Notes for PWM Power Supply Controllers
TL494 Related Links
The ICL8038 waveform generator is a monolithic integrated circuit capable of producing high accuracy sine, square, triangular, sawtooth and pulse waveforms with a minimum of external components. The frequency (or repetition rate) can be selected externally from 0.001Hz to more than 300kHz using either resistors or capacitors, and frequency modulation and sweeping can be accomplished with an external voltage....
Everything You Always Wanted to Know About the ICL8038
(This is another chip of intersil i used for many things - delabs)
SPICE Analog Simulation Program TINA TI
TINA is an easy-to-use, but powerful, circuit simulation program based on a SPICE engine. TINA-TI is a fully functional version of TINA, loaded with a library of TI macromodels plus passive and active models.
TINA-TI's new version 7.0 has changes from Version 6.0 in the following areas:
Users operating TINA-TI version 6.0 must download the application schematic files separately. Access the Application Schematics here.
TINA's quick start guide, video tutorials, and other documentation.
Application Schematic categories include:
Electronics Circuits, Schematics, PCB, Product Design and Projects Search Engine.
