Hi guys first post and newbie to this stuff...
I build my first astable 555 timer circuit, using a TLC555CP chip. Unfortunately, it seems to have a problem. Sometimes, the output of the timer simply stops oscillating, with no apparent cause. Stranger yet, the problem often occurs at the precise time anyone moves their hand within a few inches of the circuit board (without actually touching anything!).
What am I doing wrong in assembling this circuit to cause such a problem?
I found this online elsewhere but I honestly don't know what is going on.
"the TLC555CP integrated circuit (“chip”) uses CMOS technology. Every year it seems I have at least one student who experiences this particular problem, usually as a result of hasty circuit assembly (not making all necessary connections to pins on the chip). This is a good question to brainstorm with your class on, exploring possible causes and methods of diagnosis."
I also did make sure to search this issue before posting!!!
Thanks guys.
I build my first astable 555 timer circuit, using a TLC555CP chip. Unfortunately, it seems to have a problem. Sometimes, the output of the timer simply stops oscillating, with no apparent cause. Stranger yet, the problem often occurs at the precise time anyone moves their hand within a few inches of the circuit board (without actually touching anything!).
What am I doing wrong in assembling this circuit to cause such a problem?
I found this online elsewhere but I honestly don't know what is going on.
"the TLC555CP integrated circuit (“chip”) uses CMOS technology. Every year it seems I have at least one student who experiences this particular problem, usually as a result of hasty circuit assembly (not making all necessary connections to pins on the chip). This is a good question to brainstorm with your class on, exploring possible causes and methods of diagnosis."
I also did make sure to search this issue before posting!!!
Thanks guys.
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