This is a followup video on the 300W pure sine wave inverter I reviewed a couple of weeks ago. A couple of people we’re curious how the output mosfets are switched in order to obtain that nice looking sine wave on the output.
In this video I am doing a teardown of the S-993A desoldering gun to check if there are any problems with the wiring inside.
Today we are taking a look at this SilverCrest USB charger that LIDL had on offer the past week here in Romania. I think it was sold for approximately 3.5 EUR which is not bad value for money if this turns out to be a safe to use charger.
This USB charger is sold very cheap on GearBest.com and a viewer suggested I should get one and do a teardown to check the safety aspects. So I got one, and it looks decent inside, however clearly built down to a cost.
Here is a list with the items shown in this video:
- USB Drive Spy Camera
- 35W Radar Motion Sensor Switch
- 4 Channel Wireless Remote Control Switch
- 64 LED 20W 2835 Horizontal Led Light
- 64 LED 60W E27 5730 Light Bulb
- 21 LED 15W E27 Globe Light Bulb
- 21 LED 15W E27 Energy Saving Light Bulb
Links for all of these will be in the video description on youtube.
Got this cheap power socket with usb charging ports from ebay. I don’t plan to use it, I was only curious about the quality of the power supply inside.
This is the new 2016 revision of the Gopher CPS-3205C. Gopher has addressed some of the issues I found in the old revision and sent me their latest for review. You will see a teardown as well as various tests performed on this power supply.
In this video I’m opening the Fluke 77 I scored at a recent auction to show and repair a small issue it has. One of the MOV (metal oxide varistor) in the input protection circuit had suffered damage probably while protecting the rest of the circuit when a HV signal was applied to it’s input, so I decided to replace the MOV.
The original MOV part number is V910LSX1399 specs: 910V 10% 1mA
The replacement MOV part number is Panasonic ERZV10D911 specs 910V 1mA