Hello,
I need some help with this oscillator, the one you connect the output to the input through a resistor and a capacitor from ground to input. I decided i would try it out since it looked pretty simple, however, im having some problems with the output.
I'm using a 74HC14, 20kΩ resistor and 100µF capacitor and instead of measuring the output i just connected it to a 10k resistor and an NPN transistor (C4367) with a LED on the emitter.
Now, using a stable 5v supply i thought i would get about 0.5Hz, which i did for just a moment, it started oscillating faster, then slower again, and so on.
I thought there could be some noise or something on the output, maybe the capacitor messing with it, so i connected a second inverter but i still got the same problem.
Can anyone help me with this?
As you might have already guessed i'm new to electronics, so i don't know much about this.
Thanks.
I need some help with this oscillator, the one you connect the output to the input through a resistor and a capacitor from ground to input. I decided i would try it out since it looked pretty simple, however, im having some problems with the output.
I'm using a 74HC14, 20kΩ resistor and 100µF capacitor and instead of measuring the output i just connected it to a 10k resistor and an NPN transistor (C4367) with a LED on the emitter.
Now, using a stable 5v supply i thought i would get about 0.5Hz, which i did for just a moment, it started oscillating faster, then slower again, and so on.
I thought there could be some noise or something on the output, maybe the capacitor messing with it, so i connected a second inverter but i still got the same problem.
Can anyone help me with this?
As you might have already guessed i'm new to electronics, so i don't know much about this.
Thanks.