Electronic

Behavior of the Gate-Source voltage when the low-side switch is on

“One countermeasure is to separate RG_EXT during turn-on and turn-off, and reduce only RG_EXT at turn-off. The conventional method is to use a diode, as shown in the figure to the right. Using this method, in the ON state the only resistor that works is RG_ON, while in the OFF state the diode conducts and […]

Electronic

Why use 4-20mA current to transmit analog quantity?

“You may be very familiar with RS232, RS485, CAN and other commonly used industrial buses, which are all ways of transmitting digital signals. So, how do we transmit analog signals? The industry generally needs to measure various non-electrical physical quantities, such as temperature, pressure, speed, angle, etc., which all need to be converted into analog […]

Electronic

Buck Converters – From Discrete Circuits to Fully Integrated Modules

【Introduction】Overspec Overspecifying AC/DC or DC/DC converters to handle transient peak loads as if they were a continuous state not only reduces efficiency but can also cause the power supply to exceed the necessary range. By understanding the average, worst-case and peak load conditions of the application, the most appropriate solution can be selected to ensure […]