Monthly Archives: June 2005

RF FM power amplifier

As I mentioned in previous post, the power of my FM generator is too weak. At first I decided to build power amp from scratch, but I remembered, that I had old power amp from some ancient car mobile phone. … Continue reading

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Plasma TV 2 – details

As mentioned in other post, one of possible defects of plasma TV is black line of death. The cause of black line is that the one chip glued to display panel is defective. If only contact of the PCB is … Continue reading

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Plasma TV

From few not working LG plasma TV I made one half working. Just for fun and to test plasma technology. So here is small review of plasma display panel or plasma TV from LG. Very old (21 years) Panasonic CRT … Continue reading

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Selfmade double sided PCB at home!

To make double sided PCB at home you need: double sided photoresist coated PCB material, some NaOH solution (in mine case- simple drain cleaner), some PCB etching solution (HNO3 in my case), some PCB software, good printer, some transparency foil, … Continue reading

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Soviet radio FM Transmitter

In other post I mentioned, that my FM generator is too weak to jam radio stations. And I remembered, that I have quite powerful radio transmitter. 16P22B-1 (16Р22Ð’-1, 16R22V-1). It is 146 – 174 MHz FM radio station – transmitter. … Continue reading

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Jamming FM radio stations

For small amount of money I acquired very old high frequency generator. It is very old, it is made in ~1960. But still working. I opened the case and discovered few radio tubes. Most interesting, that some of the tubes … Continue reading

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Cable TV devices

From local factory received some bad, not working, cable TV distribution, amplifying, filtering, coding and mixing modules. It take few photos of this devices. I think, these devices have too much connectors. Especially that smaller one. It is made only … Continue reading

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Very Big capacitors, few words

There are capacitors and there are very big capacitors. The last ones are with heavy duty terminal connectors for high current connections, and the capacity of them are quite big. Something like 47000mkf x 80V or 100000mkf (0.1F)x 16V. Such … Continue reading

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Calculating windings of pulse power transformer

In old magazine (Radio – Радио) I found small article about calculating PWM power transformers. The formulas are for toroid core transformers, but I think, they are usable in standard E core transformers too. 1. Calculate the power of transformer: … Continue reading

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Place to visit in your Windows.

There are lots of antispyware – addware software. Some of them are free, some commercial and some contains addware and spyware… So every windows user must know few place in their system to check and remove malicious software. 1. Start … Continue reading

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