SLFS043I September 1983 – July 2019 TLC555
As shown in Figure 22, any of these timers can be used as a pulse-position modulator. This application modulates the threshold voltage and thereby the time delay of a free-running oscillator. Figure 23 and Figure 24 shows the output frequency and duty cycle versus control voltage.
|RA = 3 kΩ||RB = 309 kΩ||C = 1 nF|