By Michael & George MarinisElectric and electronic enthusiasts love having every single tool that can make their lives easier. Today, we will be presenting a tool that does just that, a spot welder.What does a spot welder do?:A spot welder – as its name implies – is a device that can weld two metals at a single spot. These two pieces of metal should be “clean”, meaning that there must be no paint or any other coating, so that the current can pass through them. The most important characterist...
Anson Bao
Sep 06,2019
196 views
By Hesam Moshiri, Anson BaoSingle-Ended TransmissionSingle-ended signaling is a simple and common way of transmitting electrical signals from a sender to a receiver. The signal is ground referenced (0 Volt) and one conductor (wire) carries the signal and one conductor carries the common reference potential. The current associated with the signal travels from sender to receiver and returns to the power supply through the shared ground connection. If multiple signals are transmitted, the carrier r...
Anson Bao
Aug 20,2019
776 views
By Hesam Moshiri, Anson BaoAbstractSwitching power supplies are known for high efficiency. An adjustable voltage/current supply is an interesting tool, which can be used in many applications such as a Lithium-ion/Lead-acid/NiCD-NiMH battery charger or a standalone power supply. In this article, we will learn to build a variable step-down buck converter using the popular LM2576-Adj chip.FeaturesCheap and easy to build and useConstant current and constant voltage adjustment [CC, CV] capability1.2V...
Anson Bao
Aug 01,2019
2841 views
By Hesam Moshiri, Anson BaoDC motors are everywhere, from hobby applications to robotics and industrial areas. Therefore there is wide usage and request for suitable and powerful DC motor drivers. In this article, we will learn to build one. You can control it using a Microcontroller, an Arduino, a Raspberry Pi or even a standalone PWM generator chip. By using a proper heatsink and cooling methods, this circuit can handle currents up to 30A.[1]: Circuit AnalysisThe heart of the circuit is an IR2...
Anson Bao
Jul 16,2019
951 views
By Hesam Moshiri, Anson BaoDisclaimer: This circuit is connected directly to the mains voltage. You must care about all safety precautions before using the device. AC loads are everywhere around us because at least home appliances are supplied with the mains power. Therefore, we always face the situations that we want to have full control (dimming) over an AC load such as a lamp, a motor, vacuum cleaner … etc. We should know that controlling an AC load is not identical with a DC load. So we shou...
Anson Bao
Jun 04,2019
1665 views
By Hesam Moshiri, Anson BaoAn FM transmitter is one of the most popular devices between electronic hobbyist, professionals and even non-technical people. In this article, we gonna learn to how to build an easy, stable and digitally controllable FM transmitter.For this design, I have selected the VMR6512 module which truly is like a full RF block on a chip!. It eliminates all essential circuitry for a basic FM transmitter such as inductors and trimmers. According to the VMR6512 datasheet: “VMR651...
Anson Bao
May 13,2019
5705 views
By Hesam Moshiri, Anson BaoAn obstacle detection unit is an essential part of a variety of projects, such as robotics and security applications. The infrared sensors are widely used for these types of applications. The main drawback of some circuit designs is that the detection units are sensitive to the outside lights and react unstable or noisy.In this project, we selected a proper IR receiving component and designed the circuit in a way to act as stable as possible. Also, you can adjust the s...
Anson Bao
Apr 24,2019
4089 views
By Hesam Moshiri and Anson Bao.Almost in any circuit design, building at least one regulation stage is necessary. Two power supply design options are available, which are linear and switching. The linear regulators are easy to build but inefficient, especially when there is a high difference between the input voltage and the desired output voltage. Also, by increasing the regulator output current, the efficiency also decreases. Both of these problems are easily visible in terms of heat dissipati...
Anson Bao
Apr 19,2019
5257 views
| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Support | 3 |
| 2 | Engineer | 2 |
| 3 | Mike | 2 |
| 4 | sachin | 2 |
| 5 | Engineer | 1 |
