teardownit

How does one determine the direction and strength of the current of the probing signal? What does the information about the current of probing and induced signals provide? Which techniques allow the most accurate determination of the cable's depth? How does one take the influence that induced signals have on neighboring cables into account? Complex locator models don't necessarily just have receivers with different types of sensors, but can also have receivers with several sensors of the same type. For example, two horizontally-oriented inductive sensors (two coils) provide a great deal of extremely useful information with the help of signal processing, which considerably facilitates the tracing process. In this case, the information refers to the power of the probing signal current, its direction in the cable being traced, and the depth of the cable. Also, all these additional functions are only used for tracing in active mode, or when the line signal is fed from the signal ge

Do you want dynamic LED turn signals for your bicycle? Do you also want a dynamic brake light? Or maybe you want an emergency signal? And all that WITHOUT a microcontroller? (only logic circuits) Part one. Basic functionality If you drive a car, it's very likely that you've come across an uncomfortable situation involving a cyclist at least once or twice in your life. Bikes can be quite unpredictable on the road and you often have to guess what maneuver they'll pull next. Electrically-powered bicycles and scooters are especially erratic when it comes to sharing the road. And once it gets dark out, the situation worsens twofold. Recently, I started dabbling in electric biking myself. However, I would say that factory reflectors on it aren't the best way to make your electric steed easily noticeable on a bike path. Therefore, it's time to unholster my trusty soldering iron and make this world brighter put together some LED turn signals. I really like the dynamic LED

 Lenkeng LKV714PRO Opening speech Previously, we’ve reviewed several options for twisted-pair network cable HDMI extenders. We’ve also taken a look at their various functions. This time, we would like to focus on an interesting type of device: an HDMI splitter/extender via a twisted-pair network cable. To do this, we will be using the Lenkeng LKV714PRO as an example. Main features and characteristics What is the purpose of this type of device? There are cases when it is necessary to multiply the signal from one video source (TV-tuner, PC, video recorder) to several displays. If these displays are so close to the source that you can reach them with a regular HDMI cable, then it would be best to use some kind of special HDMI splitter. There are so many of them available on the market right now. You have the option of going from 1 to 2, or 1 to 8, or even 1 to 16. That is, one HDMI input is multiplied to 2, 4, etc. outputs. However, it’s a different story when all the displays are far awa

 What makes up a cable locator receiver? Which sensors are used in receivers? What is the purpose of the different types of sensors and various combinations of sensors used? How does one correctly orient the receiver to the cable being traced? There are generally two types of sensors used in cable locator receivers: a whip antenna, also called a pole antenna (capacitive sensor), or a coil (inductive sensor). The design of a single receiver may include one or two different types of sensors. However, there are many kinds of sensors and they can be used in various combinations. The receiver filters, amplifies, and processes the signal from the sensors and outputs it to the operator so that a decision can be made. The simplest receivers only generate an audio signal the volume of which is proportional to the level of the received electromagnetic signal. In some simple receivers, the audio signal is also supplemented by a light indicator, which further helps establish the level of the recei

How quickly does the illumination reduce when the supply voltage decreases? How does the illumination decrease due to voltage self-loss in a long LED strip? I want to measure the effect of changing the supply voltage on the illumination change from the LED strip. This experiment will indirectly continue another investigation: “Why is a 24-volt LED strip better than a 12-volt power supply”. Test bench I took a few LED strips of different types and different power to compare the change dynamics: sample 1 = 2216 chips; 7.01W/foot sample 2 = 2216 chips; 3.66W/foot sample 3 = COB; 1.83W/foot sample 4 = 2835 chips; 4.39W/foot (Learn more about samples) The LED strip is mounted on a vertical heat sink and emits light sideways. The detector/sensor is 1 foot away from the strip. The strip is connected to the RIDEN RD6024 regulated high-precision power supply. I measure the voltage directly at the strip input to level out the voltage drop on the wires from the power supply (Greenlee DM-65 multim

Although plenty of people buy a twisted pair network cable HDMI extender kit, few think about how to mount it properly. In one of our articles (link to compact extenders) we talked about the hidden pitfalls of compact HDMI extenders. Now we would like to talk in detail about the "regular" kits. For the most part, they have a standard form: a metal case with a minimum set of inputs and outputs (HDMI, RJ45, power). Of the new users of such kits, few understand the importance of its external appearance and configuration in terms of how it will be further installed in the room. When choosing a kit, it is important to consider the following question. How are you planning to position this device? Are you planning to hide this device on a table behind an NVR, TV, monitor, etc.? Or will the transmitter and receiver be placed in plain sight, e.g. on a wall, under a tabletop, or on a surface in some other way? That is why it is important to pay attention to its form factor and the kit

How does a generator's signal frequency affect the range of the cable location signal? What cable identification frequency is more efficiently? Why can cable identification at low frequency be more reliable? And when is passive location used? Cable tracing devices consist of a generator and a receiver. Some generator types have the option to choose a frequency (usually in the range of 200 Hz - 130 kHz). Moreover, choosing the correct frequency is incredibly important. The value of the frequency affects the working distance of the cable location signal. This is the distance at which the receiver "picks up" the signal from the generator. The impedance of a long cable is predominantly capacitive. As the frequency increases, the signal leakage from the traced cable into the ground also increases. The power of the current also decreases faster along the length of the cable. Consequently, the distance where the cable location signal can be detected also decreases. By the way, t