The LS844 monolithic dual N-channel JFET from Linear Systems provides low input capacitance, substantially reducing intermodulation distortion. Targeting precision instrumentation and sensor applications, the LS844 offers a combination of high transconductance, low noise of 2.5 nV/√Hz typical at 1 kHz, and low input capacitance of just 3 pF typical and 8 pF maximum. Constructed by … Read more
With their low on-resistance, Nexperia’s 12-V and 30-V N-channel trench MOSFETs minimize energy losses and increase efficiency. The 30-V PMCB60XN and PMCB60XNE come in ultra-compact wafer-level DSN1006 (SOT8026) packages, while the 12-V PMCA14UN is housed in a DSN1010 (SOT8007) package. Nexperia reports that the MOSFETs’ RDS(on) is up to 25% better than competing devices. Simplified … Read more
It’s the mid 1990’s and I am a design engineer for a company that designs and manufactures custom measurement systems and high power electronics. Our customers range from experimental fusion reactor operators to electric utilities. One day my boss tells me to join him in the conference room to meet with some people from a … Read more
Junction temperature is directly related to system reliability. With TO packaged transistors, it was possible to add a thermocouple to the case and get a good idea of the junction temperature this doesn’t work for most SMD parts Directly measuring the junction of SMD components is almost impossible, for the following reasons. There is no … Read more
This article highlights MinDCet GaN power stages that requires implementing an optimized gate-driver for GaN transistors. GaN technology is a true enabler for power stages, today providing performance that was unthinkable in the previous decade. The maximum performance and benefits from GaN are obtained only when the gate driver matches the same degree of performance … Read more
In the late 1990s I was working for a company that manufactures sub-systems for tramways, subways and light rail car manufacturers. One day my boss tells me that one of our inverters, a 5 kW DC to three-phase AC unit, has too many service calls and asks me to see what I can do to … Read more
Sometimes, it is useful to transmit a low-power radio signal to create a beacon, to send a signal carrier to a near receiver, to transmit in QRP or QRPP mode, and so on. The circuit shown here is very easy to build and it works. It doesn’t use any inductor nor crystal, but its frequency … Read more
The 2015 International Technology Roadmap for Semiconductors (ITRS) report, officially released in early July 2016, predicted that after more than 50 years of miniaturization, the transistor could stop shrinking by 2021. In just five years, the miniaturization of the transistor could reach a halt. The 2015 International Technology Roadmap for Semiconductors (ITRS) report, officially released … Read more
A DC-DC converter allows elevation of an input dc voltage making it twice on its output. This is a useful innovation for devices that use DC power supply that is made twice as its input dc voltage. This circuit is a DC-DC Converter that converts 6 volt source into 12 volt DC source. Basically it … Read more
STMicroelectronics’ MasterGaN, a platform that integrates a half-bridge driver based on silicon technology, has just been further-optimized with the addition of a pair of gallium nitride power transistors. In an interview with Power Electronics News, ST highlighted how this new platform enables up to 80% smaller, lighter-weight systems with 3× faster recharge times, but above … Read more
