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Question: what is 555 timer

Answer: 555 timer is used to generate time delay and also used as counter



Category Electronics Interview Questions & Answers - Exam Mode / Learning Mode
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Question: what is 555 timer
Answer:

555 timer is used to generate time delay and also used as counter Source: CoolInterview.com

Answered by: jayashankar | Date: 6/5/2010 | Contact jayashankar Contact jayashankar

The 555 Timer IC is an integrated circuit (chip) implementing a variety of timer and multivibrator applications.The 555 has three operating modes:MONOSTABLE,ASTABLAE,BISTABLE
In the monostable mode, the 555 timer acts as a ?one-shot? pulse generator. In bistable mode, the 555 timer acts as a basic flip-flop.In astable mode, the '555 timer ' puts out a continuous stream of rectangular pulses having a specified frequency
Source: CoolInterview.com

Answered by: SARANYA | Date: 6/22/2010 | Contact SARANYA Contact SARANYA

It is a 8 pin IC that has been out there for about 30 years. It was known as a National LM555 IC. It required about 4 or 5 resistors and caps.
It once setup would toogle HI or LO for a given period of time. Common use for for a one shot or switch debounce circuit Source: CoolInterview.com

Answered by: Donn Washburn aka n5xwb | Date: 9/2/2010 | Contact Donn Washburn aka n5xwb Contact Donn Washburn aka n5xwb


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