bunghole
New Member
i dunno how many times I've tried, using the programs I've found, even sitting at a desk with a calculator for half an hour, but i still need help!
I am trying to make a timer that oscillates at 1Hz, 1 second for high and low time. This is used a a headlight hazard timer on the following train: https://en.wikipedia.org/wiki/VLocity
where the left and right headlights alternate every second. i know because i had a job testing them at the factory. they use a telemecanique timer.
I have a Dick Smith catalogue and this is what it says:
Output HIGH is:
t1 = 0.693(R1+R2)C1
Output LOW is:
t2 = 0.693(R2)C1
Total Period:
T = t1+t2 = 0.693(R1=2R2)C1
The frequency of oscillation is:
f = 1/T = 1.44/(R1+2R2)C1
The Duty Cycle is:
D = R2/R1=2R2
can someone PLEASE help me???
I am trying to make a timer that oscillates at 1Hz, 1 second for high and low time. This is used a a headlight hazard timer on the following train: https://en.wikipedia.org/wiki/VLocity
where the left and right headlights alternate every second. i know because i had a job testing them at the factory. they use a telemecanique timer.
I have a Dick Smith catalogue and this is what it says:
Output HIGH is:
t1 = 0.693(R1+R2)C1
Output LOW is:
t2 = 0.693(R2)C1
Total Period:
T = t1+t2 = 0.693(R1=2R2)C1
The frequency of oscillation is:
f = 1/T = 1.44/(R1+2R2)C1
The Duty Cycle is:
D = R2/R1=2R2
can someone PLEASE help me???