To begin, let us provide some background on MOSFETs for those who do not know what MOSFETs are. MOSFET stands for Metal Oxide Semiconductor Field Effect Transistor. The first part of this just refers to the type of material the transistor is made of (highly simplified as there are implicatio...
The same applies with the MOSFETs. When the input is at mid-rail, a voltage between gate and source will be produced for both MOSFETs. Since a MOSFET can handle many amps, this will put a short-circuit across the power rail and will cause a lot of damage. Transistors and MOSFETs will ...
MOSFETs are multi-use transistors that can act both as amplifiers and switches. MOSFETs can be used as gates that change the conductivity of the device based on the value of an input voltage at one of the device's terminals. Next, power is stored in the power supply in the two large el...
In many cases MOSFETs are used to switch dynamically – for example in power converter applications (Switched Mode Power Supplies, SMPS). In these applications the performance of a MOSFET depends on several other parameters as well. SMPS switching frequencies are commonly in the range of below ...
At this point, both MOSFETs are off (open), so the SW pin is in a state of high impedance. The inductor and parasitic switching time (phase #1), the average input current over capacitances on that pin ring until it reaches its DC value, which equals the input voltage. this time must...
In this post I have explained how to safely connect multiple transistors in parallel, these can be BJTs or mosfets, I will elucidate both. Why Parallel Transistor become Necessary While making power electronic circuits, configuring the power output stage correctly becomes very crucial. This involves...
Today we use switching MOSFETs instead of bipolar transis-tors, allowing for much faster switching transitions. This in turn gives us lower switching losses, allowing for switching frequencies of up to 5 MHz. Such high switching frequencies enable the use of very small inductors and capacitors ...
Another big advantage of a MOSFET against the BJT is it's high input resistance, which makes it possible to be integrated with any logic IC directly, no matter how big the load may be that's being switched by the device. This advantage also allows us to connect many MOSFETs in parallel...
When power is applied to the circuit, current begins to flow through L1 and into the MOSFETs’ drains via the center tapped load coil. Simultaneously, this voltage appears on both gates and begins to turn the MOSFETs on. Since no two FETs are alike, one turns on faster than the other an...
No. Celestron themselves attempted using heatsinks for the L293DD chip on many of the Rev.F mainboards, but the impression I get(another term for guessing)is that it made the issue worse, and later revisions discarded that idea.