Thursday, March 20, 2008

ibrt Engineering Solutions

ibrt Engineering Solutions

Ing.Büro R.Tschaggelar offers a wide range of consulting services including

  • hardware and software - design and development
  • PC based or embedded
  • control and communication applications
  • simulations and measurements

german pages - ein eher kleiner Teil auf deutsch

Area - broad combined background from electronics, software engineering and physics, many complex problems become more solvable.

Atlantic Quality Design Product Design Services

Atlantic Quality Design Product Design Services

Electronics development services to industry from offices in Virginia. From small gadgets to nationwide systems and factory floor instrumentation.

Area- Embedded system design, that is, microprocessor based products. This includes all the real world analog, digital, and communications interfaces demanded of today's applications.

Electronic product design and see the Interesting Publications too.

Colorado Electronic Product Design

Colorado Electronic Product Design

Electronic Design

o System design
o Hardware
o Software
o Regulatory Approvals
o Patent Documentation
o Product Feasibility Study
o Product Cost reduction
o Transfer to Manufacturing

Monday, March 17, 2008

MAX8881and DS2490 Characterization for Cells

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

Sunday, March 16, 2008

PWM Control Circuit - TL494

PWM Control Circuit - TL494

  • Complete PWM Power-Control Circuitry
  • Uncommitted Outputs for 200-mA Sink or Source Current
  • Output Control Selects Single-Ended or Push-Pull Operation
  • Internal Circuitry Prohibits Double Pulse at Either Output
  • Variable Dead Time Provides Control Over Total Range
  • Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance
  • Circuit Architecture Allows Easy Synchronization

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