555 Applications and Examples


Schematics - 555 Usage

A collection of drawings of different 555 applications. Note that some of these were drawn as an exercise in understanding 555 performance, some are re-drawings of schematics found on the web and in books, and some are drawings of gear that I own or have constructed. I think I have managed to attribute any revamps to their respective originators, but if I missed one, I will be more than happy to correct it. Thanks to you all.

Astable and Monostable Values for Period and Frequency

apps1

10% and 50% Duty Cycle Adjustments

apps2

Astable/Monostable Example Circuits and Math

apps3

Linear Ramp and Delayed Pulse Generators

apps4

Lamp Dimmer, Wiper Delay, Tachometer Circuits

apps5

Plant Watering Timer - Hours of Delay

apps6

Servo Drivers and 100 kHz Clock

apps7

Bedroom Lamp Timer - 15 sec Delayed Switchoff

apps8

Audio Applications

apps9

SR F/F, Line Driver, Inverted Monostable

app68

One-Shot Examples

app86

Delayed Pulse Generator

app87

Timer Control Board Schematic

app-cmp

555 Period Calculations

expr1

555 Internal Schematic

schem


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