BlogHide Resteemsteardownit (31)in aroundcable • 6 months agoSearch for intermittent faults, and Pupin coils using a reflectometer.Intermittent faults ('floating' defects) are damages that manifest themselves periodically and are caused by poor-quality core connections or reduced insulation resistance. Customer complaints about…teardownit (31)in diyelectronics • 7 months agoHow does binary logic work? Shift registersSometimes, a microcontroller does not have enough pins to receive signals from buttons or display them on LED indicators, control relays, etc. Sometimes, one needs to interconnect two digital…teardownit (31)in hdmi • 7 months agoHDMI wiring and pinoutMuch like USB, HDMI has several different types of plugs and ports. Type A is the standard one. A trapezoidal port with two rows of pins, top and bottom, totals 19 pins. It can be found…teardownit (31)in aroundcable • 7 months agoFinding branches using a reflectometerAs you know, a data cabling system consists of different segments. To connect them all and bring the data connection to the end user, it is necessary to make a certain number of crossings. Often…teardownit (31)in powertesting • 7 months agoPower control unit for testingScheme Element functions: J1 - AC grid input J2 - oscilloscope connection, current monitoring J3 - output for power supply under test SW1 - circuit sensitivity switch for…teardownit (31)in diy • 8 months agoMarshall Guv`nor: a Pedal that sounds like a Tube StackTo be more accurate, it sounds like a valve stack; after all, it is a British pedal imitating British Marshall amplifiers. Don't tell anyone because it's a secret: when creating his JTM45, Jim…teardownit (31)in hdmi • 8 months agoHDMI standard and functionsHDMI stands for high-definition multimedia interface. Since it has HD in the name, it should be easy for anyone to guess when it was first introduced and implemented, raising 'HD' on the flag is so…teardownit (31)in pwm • 8 months agoPWM frequency in Shelly RGBW2 controllerI received an interesting email from a reader of my post: ===== After having some bloody eyes and reading your article I decided to change the firmware on shelly rgbw2 with ESPHome so I can…teardownit (31)in meanwell • 8 months agoFinding water damage in a cable using a reflectometerDespite all the hard efforts to keep IT cables dry, water remains the most likely cause of cable failure. Water introduction into the cable leads to various types of damage, often resulting in a…teardownit (31)in videocard • 8 months agoVGA videocard for microcontrollers. Part 2First of all, you should pay attention to the ROM used. The flash-ROM chip from an old computer motherboard has a finicky parallel interface where the address is written in two runs. This…teardownit (31)in microcontrollers • 8 months agoVGA videocard for microcontrollers. Part 1Sometimes, when making your own devices on microcontrollers, there is a need to display huge amounts of information on a display and to use a bigger screen for ease of perception. Unfortunately…teardownit (31)in electronics • 9 months agoPower supply characteristics. Turns the AC/DC power supply on and off. Low-cost parameter measurement.Power-on and parameters characterizing the behavior of the power supply when turned on Powering on the AC/DC source can be separated into the following phases: Connecting to the grid, charging…teardownit (31)in pi • 9 months agoPi Extension board "PiEBridge" adaptersProgrammable power supply for external/target devices The PiEBridge has a built-in programmable power supply for external/target devices. The user can set the voltage of 2.5-5V (accuracy not less…teardownit (31)in reflectometer • 9 months agoReflectometer applications: methods for finding significant cable damageThe primary and most common damage types are wire casing damages or cable installation errors. These typically are 'floating' defects and wire connection errors. Let's learn the technique of…teardownit (31)in diy • 9 months agoDIY single transistor reflex AM radio with regeneration and AGCThis is a piece of circuitry magic; it's a great pleasure to assemble and configure it! The receiver sounds pretty good if a medium-wave station is nearby or an AM transmitter is at home. In the…teardownit (31)in teardown • 9 months agoReview, teardown, and testing of LRS-150-24 Mean Well power supplyThe LRS-150-24 power supply can operate from a 100–120 volt or 200–240 volt AC network. The manufacturer states it provides an output current of up to 6.5 amperes at 24 volts. The supply measures 5¾…teardownit (31)in raspberrypi • 9 months agoPi Extension board "PiEBridge""PiEBridge" is an extension board for microcomputers similar to the Raspberry Pi (Pi), which is designed to be a helper for the DIY-maker in all his activities - Pi, together with PiEBridge, can…teardownit (31)in reflectometr • 10 months agoReflectometers' characteristics: additional capabilitiesThe accuracy of reflectograms, the reliability of the conclusions made, and the time spent on diagnostics largely depend on the set of additional functions of a particular device. A modern…teardownit (31)in diy • 10 months agoRegency TR-1 superheterodyne transistor radioI almost built a 1954 Regency TR-1 superheterodyne transistor radio. It was the very first commercially available radio receiver in the United States and globally, built entirely on…teardownit (31)in hdmi • 10 months agoWhen is the best case for HDMI over IP extenders?IntroductionWhy use HDMI over IP in some cases? The image quality is noticeably worse than a classic HDMI twisted-pair extender. Let's see a few examples and answer this together. When is the best…
