Tag: filter

Voltlog #226 – InTheMail

Welcome to a new InTheMail, the series that will touch both your passion for electronics and your bank account at the same time. We’re gonna start with this set of tweezers from Vetus. A few months ago I was considering buying some more expensive electronics tweezers but the good ones are really expensive when you include shipping as well so in the end I decided to give these a try. I’ve had Vetus tweezers in the past and some were good some were bad. This time I asked multiple sellers on Aliexpress if the tweezers are original Vetus or not, some responded and promised their goods are original. Coincidentally or not those who said their products are original also had higher prices. In my experience with suppliers, they never lie about the origins of a product if you directly ask them so I tend to believe that what I have here are genuine Vetus tweezers

 

 

Voltlog #189 – InTheMail

Hello everyone and welcome to a new InTheMail the series that will touch both your passion for electronics and your bank account at the same time.

We’re gonna start with this interesting looking controller type module. So we got what looks like a big switching device here that probably needs a heatsink. Well this is a beefy triac, it can do 100A and can also withstand 1000A non repetitive peaks. We’ve kinda started from the wrong side, from the output but that’s what stands out from this module. We have an opto-isolator which has a triac output driver, separating the two sides of the board. Let’s check the clearance on the back, they have something like 3mm clearance in this area. If I were to design this, I would have done it with at least 5mm, I don’t see the point of extending this ground poor so close to this track which is on the hot side.

Links for all of the items can be found in the video description on the youtube page.

Voltlog #112 – The nicest PCB ruler (with microwave components)

Just a short video showing you the nicest pcb ruler I’ve seen so far. It contains the most common microwave components that you will find in an RF design.

Link to this pcb ruler 

Voltlog #40 – InTheMail

Once again too many mail items to fit into a single video, so we have a two parts upload. In the first video I only had time to show two items the SONOFF from ITead and the SP mini from Broadlink but that is including teardowns and discussions on the internals.  Surprisingly the SP mini doesn’t use the ESP8266 as expected but instead it uses the MT7681 from MediaTek.