Labels:text | diagram | plan | technical drawing OCR: Basic Monostable Circuit Brought to you by: TOM CAT Voc (+5 to 15v) DOMAIN BBS 208-375-6571 R1 8 Make reset and trigger 7 Reset momentarily low to reset 4 6 timing cycle. Otherwise keep reset at Vcc. 555 IN Output 2 3 Triggerpulse in <- T -> 4 1 Monostable pulse out + C2 C1 .+ T = R1 x C1 T is independent of Vcc T = Time in seconds R = Resistance in Ohms A negative trigger pulse at Pin 2 turns off a transistor that C = Capacitance in Farads otherwise shorts C1 to ground, the output then goes high as C1 charges through R1. When the charge on C1 is 2/3 Vcc the 555 discharges C1 to ground. The output then goes low.