All Sections: Fairchild

1. +5V powered charge pump battery charger
   David A. Johnson
   Circuits Texas Instruments SN74HC14
   .. with a voltage doubler charge pump circuit. Materials on the topic Datasheet Texas Instruments SN74HC14 Datasheet Fairchild 1N5819 discovercircuits.com
   Jun 30, 2025

2. A two-way Wilson current mirror
   Stephen Woodward
   Circuits Texas Instruments LMC555
   .. current mirror that is. Chapter 11: The Current Mirror Materials on the topic Datasheet Texas Instruments LMC555 Datasheet Fairchild 2N3906 Datasheet Central Semiconductor 2N5087 Datasheet ON Semiconductor 2N5089
   Jun 12, 2025

3. Power amplifiers that oscillate - deliberately. Part 2 - A crafty conclusion
   Nick Cornford
   Circuits Microchip MCP6002 MCP6022
   .. Part 1: A simple start. Materials on the topic Datasheet Microchip MCP6002 Datasheet Microchip MCP6022 Datasheet Fairchild BC557B
   Jun 12, 2025
4. A simple circuit to let you characterize JFETs more accurately
   Cor van Rij
   Circuits Texas Instruments TL071A
   .. John. Simple circuit lets you characterize JFETs. Materials on the topic Datasheet Texas Instruments TL071A Datasheet Fairchild BC547B Datasheet Fairchild BC557B
   May 15, 2025
5. Fast response 1 Hz to 2.5 MHz V-F converter
   Jim Williams
   Circuits Analog Devices LT1004 LT319A LTC1052 LT1056
   .. Devices LT1004 Datasheet Analog Devices LT319A Datasheet Analog Devices LTC1052 Datasheet Analog Devices LT1056 Datasheet Fairchild MM74C00 Datasheet CDIL 2N2369
   May 14, 2025
6. LM4041 voltage regulator impersonates precision current source
   Stephen Woodward
   Circuits Analog Devices LM4041
   .. DAC ripple with analog subtraction. Materials on the topic Datasheet Analog Devices LM4041 Datasheet Diodes TL431 Datasheet Fairchild KSD1691 Datasheet Microchip TN0104
   Apr 27, 2025
7. Current monitor
   Peter Demchenko
   Circuits Fairchild BC560
   .. as well. As for Q1, Q2: any low-power PNP with a reasonably high B will do, e.g., BC560. Materials on the topic Datasheet Fairchild BC560
   Apr 24, 2025
8. KSD1691 — Datasheet Fairchild
   Datasheets Fairchild KSD1691
   NPN Epitaxial Silicon Transistor
   Apr 23, 2025
9. PWM-programmed LM317 constant current source
   Stephen Woodward
   Circuits Fairchild LM317
   .. tracking preregulator. Woodward, Stephen. Cancel PWM DAC ripple with analog subtraction. Materials on the topic Datasheet Fairchild LM317 Datasheet Diodes TL431 Datasheet Microchip TN0104
   Apr 16, 2025
10. Infrared (IR) receiver circuit minimizes power consumption
    David Lees Donald Schelle
    Circuits Fairchild FDN359AN FDS6679 QSE113
    .. according to your application. The maximum data rate (determined by Q1) exceeds 10 kbps. Materials on the topic Datasheet Fairchild FDN359AN Datasheet Fairchild FDS6679 Datasheet Fairchild QSE113 Datasheet Maxim MAX6848 Datasheet ...
    Apr 15, 2025

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