Hello,
Has anyone had any issues with a 555 timer output dropping in cold temperatures?
I am using an IR emitter/detector circuit with the IR LED's tied to the output of the 555 timer.
Under normal operating temperature (70 deg F or 21 deg C), the output signal is around 38Khz with enough power to light up the IR LED's.
However, I've noticed that when I store my robot in my garage, where the temps are around 50 deg F (10 deg C), the output of the 555 timer drops completely (around 0.1V). When I bring it back inside, it works perfectly when it warms back up to room temperature.
Here's a short summary of the circuit:
5V -> 555 Timer
R1 = 22K 1/4W resistor
R2 = 10K trimpot (103)
C1 = 0.001 uF (102)
Any help is appreciated!
Thanks,
Erik
Has anyone had any issues with a 555 timer output dropping in cold temperatures?
I am using an IR emitter/detector circuit with the IR LED's tied to the output of the 555 timer.
Under normal operating temperature (70 deg F or 21 deg C), the output signal is around 38Khz with enough power to light up the IR LED's.
However, I've noticed that when I store my robot in my garage, where the temps are around 50 deg F (10 deg C), the output of the 555 timer drops completely (around 0.1V). When I bring it back inside, it works perfectly when it warms back up to room temperature.
Here's a short summary of the circuit:
5V -> 555 Timer
R1 = 22K 1/4W resistor
R2 = 10K trimpot (103)
C1 = 0.001 uF (102)
Any help is appreciated!
Thanks,
Erik