This PWM Controller circuit is ideal for controlling small motors with 2A maximum current consumption. For higher currents you need additional cooling for T2 and increase C2 value. This pwm motor ...

To manage and regulate power with both efficiency and finesse, electronics designers turn to Pulse Width Modulation (PWM).

The circuits presented here use ananalog switch—such as a DG419or one-third of a CD4053—to combinean analog signal with a standard PWMsignal. Most microcontrollers can easilygenerate the PWM signal.

The circuit uses the ubiquitous LM431 shunt regulator to implement a second-order Sallen-Key low pass filter together with a level shifter.

Hello,After reading a few post from stickmewithneedles and Unobtanium, I'm planning on making a thermal fan control circuit employing PWM. I've no EE degree, but I love electronics. Details(pdf ...

When the analog signal's magnitude exceeds that of the carrier, the PWM circuit produces high output. Conversely, when the analog signal is less than the carrier signal magnitude, PWM circuits ...

The two-transistor circuit gives the pale blue trace, which seems reasonably well behaved aside from some small wibbles. To look at the constant current circuits with different pwm voltages at 10kHz ...