The average hobbyist should not rely on this tester because of the deficiencies listed below. Instead he or she should buy a transistor tester that can analyze the device and tell what the pin out is and polarity, N-channel or P-channel. Also it can tell if the device is a MOSFET or a regular power
(Read More…)
Here’s a 17 min. video describing the above in the title. It’s technical and somewhat complicated but calculates the power dissopated during switching. There are a lot of important details, such as the value of the gate resistor. I think I need to do a lot more studying about this topic.
Gallium nitride power electronics will replace silicon and will make laptop power adapters smaller than a golf ball and will save major amounts of electricity. GaN devices will waste a lot less power, which will enable power electronics equipment to be made smaller and more efficient. Quote: “”GaN-based power electronics, on the other hand, could
(Read More…)
This is a simple charge controller that includes a dump load to dissipate excess power from the PV panel. D1 is the reference voltage that feed the 393 comparators, and its forward voltage changes with temperature. It would be better to use a low power LM317 to give a stable 1.25 volts. Instead of a
(Read More…)
The gate driver circuit shown in the screenshot uses BC547s, which are limited to less than 200 mA current. Instead, if the two transistors were BC337 or PN2222A which can easily handle over 500 mA, they could charge and discharge the gate faster, and thus reduce the dissipation in the MOSFET.
