The most common type of power supply today is the switching supply. These units use pulse-width modulation (PWM) to regulate output. Supplies today employ several different PWM circuit configurations.

A novel full-wave rectifier turns an audio power amplifier into a simple modulator, that is then used to modulate an ...

In some power-supply applications, the pulse-width-modulator (PWM) controller is powered up from an auxiliary winding tapped off the power stages transformer (Fig. 1).

Supply Modulator (SM): A circuit that regulates the voltage provided to a power amplifier, optimising its performance in line with the varying envelope of the transmitted signal.

Capacitors C1 and C2 are power-supply bypass capacitors to help isolate the 555 timer (U1) from noise on the power line. Likewise, C3 and C4 bypass op-amp U2.

For one-off projects or prototyping, it’s not too hard to find a wall wart or power supply to send a few joules of energy from the wall outlet to your circuit. Most of these power supplies us… ...

When reaching for a power supply design it’s normal here in 2022 to reach for a switching design. They’re lightweight, very efficient, and often available off-the-shelf at reasonable pr… ...

Microchip announces the MCP1631 2.0 MHz, high-speed Pulse Width Modulator (PWM). The MCP1631 PWM provides a means to close the feedback loop in Switch-Mode Power Supplies (SMPSs) that use ...

Toshiba’s new 100V N-ch power MOSFET with low On-resistance and an expanded safe operating area supports miniaturization of power supply circuits.