Circuits: Supply

1. Voltage doubler uses inherent features of push-pull dc/dc converter
   Ajoy Raman EDN This Design Idea presents a minimal-parts-count, wide-range voltage doubler using the inherent voltage-doubling characteristics of a one-transformer push-pull dc/dc converter. The implementation uses a high-voltage Darlington-array ...
   Circuits » Supply » Allegro » ULN2023A
   04-09-2018
2. Switcher regulates HV in novel way
   Gheorghe Plasoianu EDN Designing a high-voltage regulator can pose difficulties associated with component stress, reliability, and costs. This Design Idea offers a solution: a simple unregulated high-voltage supply in series with a low-voltage ...
   Circuits » High Voltage · Supply » Linear Technology » LTC1625
   21-08-2018
3. Reset an SOC only when power is ready
   Goh Ban Hok EDN An SOC (system on chip) normally requires two power supplies one for the core supply and the other for the I/O. To properly power up the chip, you need to get one of the power supplies ready before the other, according to the ...
   Circuits » Supply » Texas Instruments » LM311N, SN74LS08
   08-08-2018
4. Servo loop improves linear-regulator efficiency
   Aurel Gontean EDN Linear regulators are easy to implement and have better noise and drift characteristics than switching approaches. Their largest disadvantage is inefficiency: excess energy dissipated as heat. Several well-known techniques are ...
   Circuits » Supply » Linear Technology » LM2576T, NE5534
   02-08-2018
5. "Unstable" Power Supply Simulates Solar Panel Behavior
   Giovanni Romeo and Giuseppe Urbinilogia Electronic Design This power supply may seem a bit strange, since it’s not stable in voltage or in current. However, it simulates the behavior of a solar panel and can be very useful if you’re ...
   Circuits » Supply · Solar » Analog Devices » ADM660
   23-07-2018
6. Improve efficiency of low-cost switcher
   Peter Demchenko EDN Low-current switching regulator ICs often use a Darlington as the output switch. The power conversion efficiency in this case can be improved with the help of only two cheap components. To make this possible, the chip should ...
   Circuits » Supply » ON Semiconductor » MC34063
   04-07-2018
7. Transistors drive LEDs to light the path
   Eliot Johnston EDN Keeping low-voltage outdoor lights illuminated takes some effort. Bulbs burn out, and connections corrode. HB LEDs (high-brightness light-emitting diodes) seem like acceptable replacements, but most are available only in ...
   Circuits » Supply · Light » Cree » C535A-WJN
   20-06-2018
8. Use an optocoupler to make a simple low-dropout regulator
   Marc Ysebaert EDN Although a monolithic low-dropout regulator has superior dynamic characteristics, the discrete regulator in this Design Idea is so simple that you can adapt it to many purposes. Using a common transistor, it has a dropout voltage ...
   Circuits » Supply » Vishay » SFH617A
   14-06-2018
9. Active Rectifier Controller with Ultrafast Transient Response and Low Power Dissipation
   Bin Wu, Analog Devices Design Note 572 Introduction The LT8672 is an active rectifier controller that (along with a MOSFET) provides reverse current protection and rectification for power supplies in automotive environments. This job is ...
   Circuits » Supply » Analog Devices » LT8650S, LT8672
   14-06-2018
10. Power an LED driver using off-the-shelf components
    T A Babu EDN High-power LEDs challenge electronics engineers to design accurate and efficient, yet simple, driver circuits. Conventionally, driving high-power strings with accurate current requires dedicated switching regulators. Choosing a ...
    Circuits » Supply · Light » Texas Instruments » NE555
    07-06-2018