For not using a scope, this method is pretty accurate, and only uses two discrete circuit components (the resistor and the speaker). If you’re ever in a pinch with PWM, this is sure to help ...

The main simplification was using a constant PWM signal ... your favorite vendor and copy the design from their data sheet. You’ll spend hours building a circuit as complex as the one you ...

The LM317 regulator melds with HC4053 CMOS switch to make a 16-W PWM power DAC, charting a less traveled by path to power.

Figure 1’s version of a symmetrical 0 V to 10 V, 1.5 A lab supply implements an extra handy trick: computer programming via a single PWM output. Figure 1 LM337, LM317, and CD4053 join forces in a ...

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This is a boost DC/DC switching controller that adopts PWM (Pulse-Width-Modulation) control scheme. It accepts input voltage (Vin) from 0.95V to 1.8V, and outputs duty cycle from 0~85%. With two ...