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Smart Photoresistor Timer Needs FeW Components - 09/03/09 EDN Design Idea mart photoresistor senses darkness and then turns off. . . [by
Abel Raynus, Armatron International Inc, Malden, MA]
Solar Power System
Guard - The common home solar power system, in principle
consists of a roof-mounted solar panel, a charge controller and a storage battery bank plus direct or electronic
inverter powered electric lighting units. In some situations, the solar panel is mounted on a mast extended from
ground and this may become an obstacle during night. . . [Circuit Posted by T.K. Hareendran]
Solution for PC100 CompliAnt Modules - Application Brief # 017. . . [Pericom Semiconductor]
Solutions to Current High-Speed Board
Design - Application Note # 022. . . [Pericom
Semiconductor]
Special Function Timer Circuits LM555 - The following are LM555 timer circuits that have unusual functions. Circuit for model
railroad trains. . . . [from Rob Paisley's Model Train web site]
Speed Acces to µP's
Real-Time Clock - 06/05/98 EDN Design Idea (Scroll to
find this circuit) The DS5000T (Dallas Semiconductors, www. dalsemi. com) is an 8051-compatible processor that
integrates nonvolatile memory and a real-time clock. This module has an impressive set of functional extensio. .
. [by Jerzy hrzaszcz, Warsaw University of Technology, Warsaw, Poland]
Speed test times by utilizing the built-in features of your frequency counter - Application Note. . . [Aglient]
Square Wave Oscillator - It has adjustable (and settable) frequencies from 1Hz to 100kHz and is an ideal piece of
Test Equipment. . . . [No designer name given]
Square wave
oscillator with fixed frequency steps using 555 timer chip
- . . . [Collin Mitchell's web site]
Square Wave to
Sine Converter - . . .
Stable 40kHz Clock (Rodney Radford) - ASCII format-A circuit that I have used before is based on the CD4060 (14stage binary
counter) and a 640Khz ceramic resonator. The CD4060 is basically an oscillator and a ripple counter to divide the
640khz down to something more usable. . . .
Stable Multivibrator Transistor - I will introduce the a-stable multivibrator circuit which used two transistors. The a-stable
multivibrator is the circuit which repeats the high level (H) condition and the low level (L) condition
alternately. ‚hIn case of the transistor type, the voltage (Vcc) of the power supply. . . [Seiichi Inoue's Web
Site]
Stall-Motor-Switch Machine Drivers (LM556) - The circuits on
this page are Switch Machine drivers that can be used to operate slow motion Stall-Motor type switch machine
motors. The circuits use LM556 dual timer chips to provide a PUSH-PULL output to reverse the polarity of the
voltage to the switch machine motors. The output of the drivers is equivalent to a DPDT toggle switch. . . [from
Rob Paisley's Model Train web site]
State & Timing Modules for
Agilent Technologies Logic Analysis Systems - Application
Note. . . [Aligent]
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