Depending on the value of C1, this oscillator can produce signals of up to 1 MHz. For a capacitor of 10 nF, we will have something around 100 kHz and for 100 uF we will have a frequency of approximately 10 Hz, this maintaining the charge and discharge resistor. in 4709. The 7414 must be powered with 5 V between pins 14 (+) and 7 (-). The signal obtained at the output is rectangular with an active cycle of 50%.
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