+---|>---o-- Output | | ----+ | | _|_ | _)_ C (Capacitor) R| | | | ----+----+ | GND
) of a Schmitt trigger relaxation oscillator depends on the time constant of the resistor ( ) and capacitor ( ) and the internal hysteresis thresholds of the chip. 74hc14 oscillator calculator full
: The capacitor slowly charges through the resistor. Once it hits the upper threshold, the gate's output flips to LOW . Now, the capacitor starts discharging back through that same resistor. When it hits the lower threshold, the gate flips to HIGH , and the cycle repeats forever. +---|>---o-- Output | | ----+ | | _|_