This article will teach you how to check measure a diode. This is a basic knowledge for students and electronic hobbysts. If your project is failed or your electronic device is broken, then you need to check the components. And before you check the components, you need to learn how to check and measure the components. Here is the explanation about how to check the diode:
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Being able to determine the polarity (cathode versus anode) and basic functionality of a diode is a very important skill for the electronics hobbyist or technician to have. Since we know that a diode is essentially nothing more than a one-way valve for electricity, it makes sense we should be able to verify its one-way nature using a DC (battery-powered) ohmmeter as in Figure below. Connected one way across the diode, the meter should show a very low resistance at (a). Connected the other way across the diode, it should show a very high resistance at (b) (“OL†on some digital meter models).
This is simpe explanation on how to read the most types of capacitors. Before you read a capacitor, you should know about capacitor’s capacitance value (farad, microfarad, nanofarad, picofarad).
This image explanation is very easy to understand, just click the image to enlarge and then save the image for future reference. Or download the picture here. You should be understand about how to read capacitors after looking the picture.
Regulated power supplies employ engineering techniques drawn from the latest advances in many disciplines such as: low-level, high-power, and wideband amplification techniques; operational amplifier and feedback principles; pulse circuit techniques; and the constantly expanding frontiers of solid state component development.
The full benefits of the engineering that has gone into the modern regulated power supply cannot be realized unless the user first recognizes the inherent versatility and high performance capabilities, and second, understands how to apply these features. This handbook is designed to aid that understanding by providing complete information on the operation, performance, and connection of regulated power supplies.
Figure 1 above shows proper soldering technique. The diagram shows the tip of the soldering iron being inserted into the joint such that it touches both the lead being soldered and the surface of the PC board.
Then, solder is applied into the joint, not to the iron directly. This way, the solder is melted by the joint, and both metal surfaces of the joint (the lead and the PC pad) are heated to the necessary temperature to bond chemically with the solder.
