A Vector Network Analyzer (VNA) is an extremely useful tool for radio hobbyists as it allows you to measure and tune antennas and filters, as well as measure cables. The most affordable such instrument for some time has been NanoVNA. NanoVNA V2 Vector Network Analyzer can be viewed as next updated version of NanoVNA. The →
Saw in Facebook discussionhttps://www.facebook.com/groups/electronichobycircuits/permalink/3657982357559780/ https://www.facebook.com/438304376511718/posts/1304575383217942/ Another meter is fried again today!!! I have six meters blown in 2 years, while reading high voltage AC. I guess I will find a better alternative for such reading. Is there a way of fixing spoilt meters!?. We are talking about this kind of DT830 type multimeters: My answer: →
I saw one day an interesting looking multi-meter MUSTOOL MT77 Large Screen Smart Digital Multimeter Voltage Tester 3-Line Display Fully Auto-Range True RMS 6000 Counts DMM with Analog Bargraph.It is advertised as phone size design: 12 mm thin body and pocket size design make it looks like a smartphone. The meter has unibody design so →
Crimp connectors are typically used to terminate stranded wire. A well-engineered and well-executed crimp is designed to be gas-tight, which prevents oxygen and moisture from reaching the metals (which are often different metals) and causing corrosion. Wire crimping is typically a three step process that needs suitable connector and suitable crimping tool: In the first →
A decade box is a type of test equipment that can be used to substitute the interchanging of different values of certain passive components when you need adjustable value in electronics laboratory. Decade boxes are made for resistance, capacitance, and inductance. Decade boxes are typically quite expensive devices (compared to other cheap electronics parts). I →
Here is a good collection videos on SMD soldering and replacing SMD components. Enjoy. Replacing SMD components without burning neighboring connectors without hot tweezers Desoldering Techniques One Hit Desoldering Desoldering without hot air How to Solder properly || Through-hole (THT) & Surface-mount (SMD) Sostituzione connettore alimentazione micro usb step by step How to repair bridge →
Sometimes you wish you had a very small basic oscilloscope that would be easy to carry around as tool for those situations where you need to more measuring that can be done with your multi-meter. One day I found an oscilloscope kit DSO150 while browsing the banggood.com site. This model was originally only available as →
Many electronics devices have many screws in then. So opening them and closing (for repair or tear-down purposes) with normal screwdriver can feels sometimes as work. For bigger devices I use a small RYOBI cordless screwdriver with adjustable torque setting. It is suitable for medium size screws found in many electrical devices. But for those →
Hackaday posting article Performing A Chip Transplant To Resurrect A Dead Board describes a situation where the only option was to try to fix a device, which in the end involved a delicate chip transplant. The board was the Pixl.js, an LCD board with the nRF52832 SoC with its ARM Cortex M4, RAM, flash, and Bluetooth →
A time-domain reflectometer (TDR) is an electronic instrument that uses time-domain reflectometry to characterize and locate faults in metallic cables. I designed a TDR circuit many years ago for easy cable testing with oscilloscope: That circuit was also turned to an electronics kit that is sold by Far Circuits. When getting the original 74AC14 seemed →