i am actually trying to achieve probe lighting of an aircraft. so as a start i wanted to have a probe blinking at 75 every 60s. so i used a 555 timer with resistors and capacitor to achieve it. my problem right now is that the pulse rate is not being constant, around about 20-40s the probe starts to link even more faster i don't understand why this is happening. hope you all could help me with this. Thanks.
i have actually attached the circuit diagram as could not upload the whole multisim.
i have actually attached the circuit diagram as could not upload the whole multisim.
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