Free 555 timer calculator with 3 astable modes and monostable mode. Astable modes include duty cycle less than 50%, duty cycle equals 50% and duty cycle greater than 50%. resistor and capacitor values can be tweaked.
License:Freeware, $0 to buy Size:1MB. Latest Update:2011-05-29
555 Timer PRO provides an array of design wizards, circuit blocks and information panels that facilitate the use of the 555 timer. Component value calculations for the 555 take into account the supply voltage and timer fabrication (CMOS or Bipolar).
License:Shareware, $16 to buy Size:4MB. Latest Update:2013-01-10