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555 Basic Monostable Circuit

Basic monostable oscilator circuit can be deginhed by fallowing circuit schema.

Circuit trigger in from pin number 2 and output from pin 3.

The period can be calculated  T= R1 x C1

T is, time in seconds
R is, resistence in Ohms
C is, capacitanse in Farads


555 Basic Monostable circuit
A negative trigger pulse at Pin 2 turns off a transistor that otherwise shorts C1 to ground, the output then goes high as C1 charges through R1. When the Vharge on C1 is 2/3 Vcc the 555 Discharges C1 to Ground. The output then goes low

Keywords : 555, Timer, Application, Schematic, Circuit
Writer : delon  |
24 Dec 2006 Mon   
|  26.253 Views
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