555 CALCULATORS

The trusty 555 Timer has so many uses in for model aircraft it is amazing. This little utility will help when trying to determine the required parameters for the key components for your project.

MONOSTABLE TIMEOUT CALCULATOR

Type in the
Capacitor
Value

Farads

Type in the
Resistor
Value

Ohms

This is
the
TIME OUT

SECONDS

Remember that the capacitor value is in farads and not microfarads. A 10uF cap would be .00001, a 1uF cap would be .000001, etc. Resistor values are in Ohms (IE: 1K is 1000, 1M is 1,000,000).

ASTABLE SQUARE WAVE CALCULATOR

Type in the
Capacitor
Value

Farads

Type in the
Resistor1
Value

Ohms

Type in the
Resistor2
Value

Ohms

This is
the
TIME HIGH

SECONDS

This is
the
TIME LOW

SECONDS

This is
the
FREQUENCY

HERTZ

This is
the
DUTY CYCLE

Percentage

Suggestions? Corrections? Remarks? e- - Craig Tarlington.
As I get quite a number of messages, it might take some time until you receive an answer and in some cases I get lost in the flood and you may even receive no answer at all. I apologize for this, and if you have not lost patience, you might want to send me a copy of your e-mail after a month or so.
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