Electronics Articles

Among the many hot ideas in electronics has been the development of electronic temperature sensors. Learn the story behind electronic temperature control.
Various levels of government have become involved in a new arena over the last decade - the regulation of electromagnetic emissions.
See how biological organisms can mimic the work done by transistors and semiconductors.
How to check diodes with a multimeter -Tuesday, May 13, 2014
Q. In my diode lab lesson it says to use the multimeter to check the diodes. It says that the IN4149 diode should measure 16 ohms when it is forward biased and when it is reverse biased. It also says the IN34 diode should read 80 ohms and the 1N4002 should read 15 ohms when they are forward biased. I read infinity both ways for all the diodes. Are all my diodes bad?
Q. I am studying Lesson 6720, Semiconductor Memory Interfacing. The lesson describes the signals going to the different pins of the memory IC. I would like to know if there is a way I can view these signals on my oscilloscope.
Q. I have a seven-segment display with nothing to tell me what the pins are connected to. I’m not even sure if it is common-anode or common-cathode. Is there any way I can identify the pins?
In this edition of The Ham Shack, we cover what to consider when installing a tower for amateur radio operators.
The movement to environmentally protect the earth has a faithful ally in electronics. Electronic devices are monitoring the air, water and soils around us.
The magic of radio -Monday, April 28, 2014
I have a portable AM/FM radio. It has a telescoping antenna for FM, but it doesn't have for AM. It picks up AM stations very well, though. How can it do this without an AM Antenna?
In my lessons, the op amps are shown with both a positive and a negative power supply. What do you do if you only have a single power supply available, such as a single battery?