Teardown of a Vivitar Rapid Battery Charger
I just picked up a charger along with a couple of NP-FW50 spare batteries for my new Sony Alpha A6000 […]
Bertan/Spellman 225-20R HV Power Supply Teardown
I just picked up another high voltage power supply, this time it is a working Bertan/Spellman 225-20R 20kV one. Unlike […]
Bertan/Spellman 205A-05R High Voltage Power Supply Teardown
I got a non-working Bertan 205A-05R 5kV high voltage power supply and did an attempted repair video a while ago […]
How does Vacuum Cleaner Clean/Dirty Indicator Work?
I have always wondered how the clean/dirty indicator on my Hoover vacuum cleaner works. So when it was time to […]
Linear MOSFET and Its Use in Electronic Load – Update
In my previous post, I discussed why it is beneficial to use linear MOSFETs in electronic load and performed a […]
Linear MOSFET and Its Use in Electronic Load
Power MOSFETs are widely used in switch mode applications such as pulse width modulated electrical motor controllers and switching mode […]
A Dual Sensor Fan Controller Build
A while back, I added a fan controller to my Topward 6603A power supply. Later on, when I bought a […]
Teardown of a Static Fieldmeter
Static fieldmeters (or electrostatic fieldmeters) are typically used for non-contact measurements of the electrostatic field strength (usually in kV) of […]
A Super Bright Light Source
I did a teardown of a SMART UF-55 DLP Projector a while ago, and later I showed how to hack […]
Adding Strain Relief to an Existing cable
Not all cables have proper strain relief built to the connector ends. This is particularity true for some of the […]
Epson PowerLite 84 Multimedia Projector Teardown and Repair
I recently was given a broken Epson PowerLite 84 projector. The projector would not turn on when plugged in and […]
Wavetek 395 Arbitrary Waveform Generator Teardown
I picked up a Wavetek 395 arbitrary waveform generator on eBay a few weeks ago. Wavetek 395 is a single […]
Hacking an OSRAM P-VIP Projector Lamp Driver Board
After taking the SMART UF-55 projector apart, I decided to take a look at the salvaged circuit boards to see […]
Teardown of a SMART UF-55 Projector
My workplace was throwing away an old SMART UF-55 DLP projector. The projector had many stuck mirrors and the lamp […]
Lambda LQ-521 Power Supply Teardown and Repair
I bought a non-working Lambda LQ-521 linear power supply on eBay a couple of weeks ago. Usually I avoid knowingly […]