Linear Technology Corporation announces the LT3007, the latest member in a family of high voltage, micropower, robust PNP-based LDOs, featuring an ultralow 3µA quiescent current. The LT3007’s high input voltage capability, spanning 2.0V to 45V with an adjustable output voltage ranging from 0.6V to 44.5V, enables operation in a wide variety of application spaces. The LT3007’s … [Read more...]

Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: Skin depth concept seems to mean that currents of same direction in conductor will repel each other to the surface of conductor which seems to contradict to the concept of currents of same direction will attract each … [Read more...]

Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: How to configure the return path of a dipole antenna? Answer: Well, when we are making a dipole antenna, we use two conductors the same length and put them in a line. At the point where they touch in the middle we … [Read more...]

Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: How can we separate CM and DM noise by oscilloscope? Answer: Another question that is not associated with the subject of my webinar! The only two ways I know, whether using oscilloscopes or spectrum analyzers, … [Read more...]

Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: Grounding strategy of circuits can improve EMC. But you mentioned that connecting to safety ground has no effect on EMI. Please explain it more? Answer: I think I covered this well enough in my webinar, when I said that … [Read more...]

A U.K. radar company has been given funding by the government’s Technology Strategy Board to investigate the possibility of replacing radar in air traffic control systems with television signals to track aircraft in flight. According to the company, the large number of TV transmitters located throughout the country could provide “a more reliable infrastructure” than the … [Read more...]

Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: What is the purpose of a bonding terminal on a 19 inch metal chassis if unwanted signals don't flow to ground? Answer: Bonding terminals are provided on racks, frames and cabinets so that wires or braid straps can be … [Read more...]

Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: Is there a simple method to choose a filter for a given purpose? Answer: No. Sorry! But we can use appropriate design techniques based on the CM and DM impedances of both the source and load circuits, and the CM and DM … [Read more...]