M mhention New Member May 10, 2013 #1 Is there a way to set the pulse interval of the 555 timer output into 1 minute? If there is, what amount of Resistors and Capacitors is needed?
Is there a way to set the pulse interval of the 555 timer output into 1 minute? If there is, what amount of Resistors and Capacitors is needed?
MikeMl Well-Known Member Most Helpful Member May 10, 2013 #2 The bipolar version of the 555 will tolerate timing resistors of up to 10megΩ, more for the CMOS version. If you can find a low-leakage timing capacitors, you can generate delays of up to several hours. Right from the TI 555 data sheet: Attachments RC.jpg 40.4 KB · Views: 152 Last edited: May 10, 2013
The bipolar version of the 555 will tolerate timing resistors of up to 10megΩ, more for the CMOS version. If you can find a low-leakage timing capacitors, you can generate delays of up to several hours. Right from the TI 555 data sheet:
alec_t Well-Known Member Most Helpful Member May 11, 2013 #3 How accurate does your 1min need to be? 10sec, 1 sec, 1microsec......?