How to figure out what kind of diode gates certain circuits are - given just the circuit and input voltages. Lesson 3463.
Q. I am studying tuners in the TV lessons. In some of the schematic diagrams, there are heavy lines boxing in the components. What are these?
A CIE instructor answers a question about surface-mounted components on circuit boards.
A CIE instructor answers a student's question what happens when current flows through a resistance and produces heat.
Q. I have been in my course for 3 years and I have a question about troubleshooting. Are you supposed to use Kirchhoff's laws to make voltage checks first, or do you use ohmmeter checks first.
Learn the common pitfalls that cause mobile antennas to fail. This article was written by a person with several years of personal experience in repairs done to police cruisers, rescue squads and fire trucks.
A+ Certification - why it's important to consider this professional certification.
Learn how Digital ICs and the threshold values that represent HI and LO are separated to make noise immunity better.
Learn how a PNP and an NPN transistor in series work. How can it work push-pull? A CIE instructor answers a question covering the transistor lab lessons.
The designation "Q" stands for quality factor. This article will show you what the importance is "Q" in practical circuits. It was written by a CIE Instructor.