555 timer is a highly stable integrated circuit capable of functioning as an accurate time-delay generator and as a free running multivibrator. When used as an oscillator the frequency and duty cycle are accurately controlled by only two external resistors and a capacitor. Some of its important features are timing from micro-seconds through hours, monostable and astable operation, trigger and reset inputs are logic compatible, and output compatible with CMOS, DTL and TTL (when used with 5V supply).

The set-up consists of 555 IC with facilities for convenient connection at the board, a power supply, built-in facilities for various type of triggers-variable frequency, variable voltage, and manual. The resistors and capacitors required are mounted on the board.

The following studies can be carried out

1. Operation as a free running multivibrator
2. Operation as a monostable multivibrator
3. Operation as a preset time delay

The above experimental set-up has been laid down on a decorated bakelite board with an aim of providing an easy understanding to the students. All components are well spread out for clarity and easy repairs and replacement. The set-up is provided with a booklet, which contains its detailed theory of operation, description, specifications, suggestions and discussion on the various experiments that may be performed with it

The set-up is complete in all respect, including patch chords
  

Top
  

  
452, ADARSH NAGAR, ROORKEE-247 667, U.K. (INDIA) Phone : +91-1332-272852, 277118, Fax: 277118, Email: info@sestechno.com
  
© 2003 SES. All rights reserved.