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555 Timer - Frequency
and Time Interval Calculator - Calculates positive and negative time intervals for the
555 timer based on R and C values. Also contains descriptions and operation of each input
and output of the timer and schematics for the two basic modes of operation (monostable or
"one-shot" and astable or "rectangular wave oscillator"). Also contains a pictorial diagram
of the timer connected as a LED flasher and a table of connections for the 556 timer (dual
555 timer).
E2CALC - An Electronics Engineers Calculator Program - E˛CALC,
or the Electronic Engineers Calculator is an engineering calculator and formula solver
program with some other handy utilities thrown in. It was
reviewed in the May 1992 edition of Electronics Australia.
Electronics Calculator Website - Several calculators for Ohm's
law, capacitor or inductor impedance, tuned circuits and RC time constants.
L or C Reactance
Calculator - Java Script to calculate capacitive or inductive reactance and resonant
frequency. For ideal devices only, resistance not included.
Resistor Color
Code Calculator - This one uses check boxes instead of pulldown menus and also
calculates the equivalent value of two resistors in parallel. My own creation.
NEW Voltage Calculator
which includes both US Standard, and Metric calculations. In addition it has power
calculations, and a battery power calculation.
Voltage Divider
Calculator - Solves voltage, current, and power dissipation problems for two element
resistive voltage dividers.
