Circuits & Schematics Nexperia

1. Current mirror drives multiple LEDs from a low supply voltage
   Rex Niven
   Circuits Supply Light Nexperia BC817
   Driving LEDs at a regulated current from low supply voltages can be difficult because minimal overhead voltage is available for control circuits. A current-mirror architecture is suitable but usually works only with ICs with well-matched ...
   Jan 6, 2025
2. One microcontroller pin drives two LEDs with low quiescent current
   Antonio Muñoz Arturo Mediano
   Circuits Microcontrollers Usage Nexperia BZX84
   The basis for this Design Idea is a circuit that uses three resistors and a microcontroller-I/O pin to work as input high impedance or output to independently drive two LEDs ( Reference 1 ). The idea sounded good for this design, mainly because of ...
   Jun 11, 2024

3. Momentary switch controls mains with latch-on and remote shutdown
   Peter Demchenko
   Circuits Supply Nexperia 1N4448
   The purpose of this Design Idea was to improve reliability, add new features, and replace a latching power switch with a momentary one. The features are: The switch has foolproof protection against too frequent switching, which can be harmful for ...
   Oct 25, 2023
4. Inverters form three-phase VCO
   Circuits Oscillators Nexperia 74HCU04 74AHCU04
   You sometimes need an inexpensive VCO that can produce evenly spaced three-phase outputs over a wide frequency range. You could use tracking all-phase filters with only one oscillator, but this technique is difficult to implement and offers limited ...
   Jun 2, 2021
5. Use two PicoGate devices for bidirectional level-shifting
   Circuits Digital Nexperia 74LVC2G241 74LVC2G07
   Bob Marshall EDN In new mixed-voltage systems, it is often necessary to level-shift a control signal from a high level to a low level. An open-drain device, such as the 74LVC2G07 , easily performs this shift. However, when a bidirectional signal ...
   Feb 8, 2018

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