Archive for September, 2005

Caps'n'Fets

Wednesday, September 28th, 2005

Spent some time braking apart old and not very old computer mainboards. Collected few kilos of capacitors and MOSFETS for future experiments.

Nice set. Press on image for big (600k) photo.
So if you need to repair some mainboard’s capacitors, you have lots of spares.

Strange FETs

Wednesday, September 21st, 2005

Today I spent some time breaking apart some TV transmitters. I was looking for power transistors. Opened one very strange module with heavy heat-sinks. This is the photo of transistors I found inside:

It is Russian made Gallium Arsenide power FET transistor mounted on heat-sink. Also some filters made on ceramics. Very nice and useless stuff […]

TL494 - magic chip, Part 7

Wednesday, September 14th, 2005

Alternative output connection.
In other post I used classic output connection- collector load. Browsing in the internet I found Russian schematics of electric shock gun. It is based on the TL494 chip. But the output was connected in different way- using emitters while collectors were connected to Vcc. Here is the part of the schematics:

On the […]


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