Here’s a useful tool for testing both power supplies & batteries, a dummy load. This unit is rated up to 60W, at voltages from 1v to 25v, current from 200mA to 9.99A. This device requires a 12v DC power source separate from the load itself, to power the logic circuitry.
Here’s a cheap PSU from the treasure trove of junk that is eBay, rated at a rather beefy 400W of output at 12v – 33A! These industrial-type PSUs from name brands like TDK-Lambda or Puls are usually rather expensive, so I was interested to find out how much of a
Continue readingeBay Chinese Chassis Power Supply S-400-12 400W 12v 33A
Here is a cheap no frills microwave oven, which died after a few weeks of normal use. Cover removed, showing the internals. Front of the microwave is on the left. Closeup of the timer unit. Cheap & nasty. Magnetron removed from the oven. Antenna is on the top, cooling fins
Here is a Bosch 14.4v Professional cordless drill/driver, recovered from a skip! It was thrown away due to a gearbox fault, which was easy to rectify. Here is the drill with the side cover removed, showing it’s internal parts. The speed controller is below the motor & gearbox here. The