Ups 5Volt Circuit


Rating: 0.00 / 5 
AC-DC & DC-DC Circuits / Power Supply Circuits
A 9-V wall adapter supplies Vm. IC2 contains a low-battery detector circuit that senses l7IN by means of R6 and R7. The detector output Cpin 7) drives an inverter (Ql), which in turn drives the shut-down inputs Ic of 1C1 and SHDN of IC2. These inputs have opposite-polarity active levels. The common feedback resistors, R2 and R3 enable both regulators to sense the output voltage, V0VT. When IC2 shuts down, its output turns off.
Ups 5Volt Circuit - schematic

However, when IC1 shuts down, the whole chip assumes a low-power state and draws under 1 . LI, D2, Gl, C2, R2, and R3 are part of the 250-mW switching regulator. Diodes D3 and D4 wire-OR the power connection to IC2, and 03 improves the linear regulator`s load regulation.

Recommended videos

  • How to design a dc power supply
    Duration: 5:31.
  • Switch mode power supply tutorial: DC-DC buck converters
    Duration: 10:05.
  • DC-DC USB 5V Step-up Boost Power Converter Circuit Module Tests
    Duration: 9:34.


  • Business Wire (press release)
    Business Wire (press release) The PA441xNL series is comprised of two THT common mode chokes (PA4415NL and PA4416NL) that are ideally suited for customers designing their own EMI filter for or DC/AC . Notable features and benefits include ve
     26 August 2016
    AC/DC and DC/DC Technology capabilities: A high voltage stand-off, “dial-a-voltage1” Twin System on a Chip (with internal powering of the MPU), the TRONIUM PSSoC is a multichip module that can be set to output from 1.8V t
     26 July 2016
  • Uninterruptible Power Solutions for the Airforce Industry
    Airforce Technology
    Airforce Technology Sinepower's static frequency converter units (SINE33I-SFC) guarantee high-quality, clean, efficient and secure electrical by transforming the grid electricity to the suitable load frequency. Our converters guarantee a ...
     21 January 2016
    converters boost efficiency in In the power electronics industry, companies celeate when gaining a fraction of a percent efficiency in their product. In today's energy market, efficiency is the “Holy Grail” of specifications. Re
     1 April 2015
  • (subscription)
    Bel's product groups include Magnetic Solutions (discrete components, power transformers and MagJack® connectors with integrated magnetics), Power Solutions and Protection (AC DC , DC DC converters, custom designs, miniature, micro
     13 January 2015
  • PR Newswire (press release)
    PR Newswire (press release) TI's award-winning floating switch architecture achieves low LED current ripple performance which is comparable to switch mode (SMPS) designs. The TPS92410 and TPS92411 require no inductive components for power tr
     30 September 2014
  • (blog)
    Nearly all regulators - whether AC/AC, , or DC/AC - use some sort of closed-loop feedback topology to maintain the desired output despite line, load, and other changes. Smart (or experienced) system designers know that a solid ...
     22 November 2013
  • Business Wire (press release)
    Business Wire (press release) Comments Andrew Smith, product marketing manager for Power Integrations: “ are often the weak link in LED lamps. This is especially true for industrial and infrastructure lighting applications where difficu
     19 December 2012
  • Semiconductor Today
    ... CA, USA (which supplies high-voltage integrated circuits for compact, energy-efficient power conversion in electronic products for and LED lighting applications) made a $30m strategic investment in SemiSouth (including an equity
     24 October 2012