Desoldering iron

In electronics, desoldering is the removal of solder and components from a circuit board for troubleshooting, repair, replacement, and salvage. There are many techniques how to desolder. Check out videos How to Desolder Through-Hole Parts, Why Some Joints are Difficult and Desoldering Components – Tips and Tricks. Desoldering tools and materials include the following: Solder

Calibration of multi-meters

I saw this question posted to ELECTRONICS HOBBY CIRCUITS IN FACEBOOK group: “can you tell me what is the meaning of calibration date of a multimeter and does it effect the work of a multimeter if it expires the calibration date?” The answer to this is: As all circuits will drift with time, the DMM

S-A-A-2 NanoVNA V2

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

DT830 multimeters

Saw in Facebook discussion 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:

Mustool MT77 multimeter

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

Crimped connectors

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

Step adjustable resistor box

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

SMD soldering and repair

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

Mini Electric Screwdriver

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