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Articles from alec_t

  1. alec_t

    Simple PWM control

    Here's a simple PWM control circuit using inexpensive readily-available components. [ATTACH=CONFI
    0/5, 0 votes
    Updated:
    Apr 24, 2015
  2. alec_t

    PWM pulse generator

    This is the base design (not a full working drawing with pin-numbering etc) for a simple PWM pulse
    0/5, 0 votes
    Updated:
    Sep 3, 2013
  3. alec_t

    Brushless DC Motor Speed Controller

    A simple, cheap, BLDC motor controller using readily-available components is described. Most previ
    5/5, 2 votes
    Updated:
    Feb 14, 2013
  4. alec_t

    Skinflint's Anti-static Wrist-strap

    When working on static-sensitive circuits, e.g. involving CMOS ICs, it is advisable first to discha
    5/5, 1 vote
    Updated:
    Jan 17, 2013
  5. alec_t

    The versatile CD4093B Schmitt NAND IC

    Schmitt logic gates such as in the CD4093 quad NAND gate IC are useful buiding blocks for various f
    0/5, 0 votes
    Updated:
    Jan 17, 2013
  6. alec_t

    Mains-powered LED night-light

    I'm probably re-inventing the wheel, but here are a few variations of a mains-powered night-light f
    0/5, 0 votes
    Updated:
    Nov 9, 2012
  7. alec_t

    Simple, cheap, Square/Triangle/Sine-wave generator

    A test signal generator is invaluable when making or repairing electronic equipment. Although a ful
    4/5, 1 vote
    Updated:
    May 25, 2012
  8. alec_t

    Dual-Mode Microphone Pre-Amplifier

    This is a microphone pre-amp which I designed for use with a SoundBlaster(TM) AWE 64 Value sound c
    0/5, 0 votes
    Updated:
    Dec 17, 2011
  9. alec_t

    Simple 3-Transistor Voltage Regulator (with current limiting)

    This article describes a simple 3-transistor voltage regulator with current limiting. It is based
    0/5, 0 votes
    Updated:
    Dec 17, 2011
  10. alec_t

    Auto Switch-Off Torch

    An elderly acquaintance who couldn't cope with battery recharging was getting through dry cells rap
    0/5, 0 votes
    Updated:
    Dec 17, 2011