Here’s a small flyback / Line Output Transformer from a portable colour TV set. Usually these transformers are vacuum potted in hard epoxy resin & are impossible to disassemble without anything short of explosives. (There are chemical means of digesting cured epoxies, but none of them are pleasant). This one
Continue readingCRT Flyback / Line Output Transformer Destructive Teardown
Here’s another Sony Flat CRT TV, the FD0280. This one was apparently the last to use CRT technology, later devices were LCD based. This one certainly doesn’t feel as well made as the last one, with no metal parts at all in the frame, just moulded plastic. Being a later
Description and Schematic SG-HM2 is a modular He-Ne laser power supply based on IC-HI1 with some minor enhancements. The first version is for laser tubes up to approximately 1 mW (2 mW with trivial modifications) but it should be straightforward to go to 5 mW or even higher power tubes
Going through eBay recently looking for parts for a couple of CRT-based projects, I came across these DC-DC converters. Apparently rated from 45-390v DC output at 200mA, these should be ideal for driving some of the electrodes (focus, screen, grid) in a CRT. Above is the top of the board,
Here is a simple 555 timer based flyback transformer driver, with the PCB designed by myself for some HV experiments. Above is the Eagle CAD board layout. The 555 timer is in astable mode, generating a frequency from about 22kHz to 55kHz, depending on the position of the potentiometer. The
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