Equivalent of Thyristor T122-25-3

http://www.bing.com/search?q=Thyristor+T122-25-3&src=IE-Address

There is absolutely no such thing as a unique, irreplaceable thyristor. But, then again knowing what you really need definitely helps with replacement.

And that even depends on the circuit you are using it in.

A good place to start if you don't have the experience to select a Thyristor based on what you need it to do in the circuit is to find the data sheet for the old Thyristor and then use this information to chose a similar replacement Thyristor from the Thyristors available from a local wholesaler or supplier.

If you get really desperate you may be able to buy them from an off-shore trading house that holds stock of obsolete electronic parts (although this will likely be expensive).

reetesh.saxena, Evita says this is a Thyristor T122-25-10 (1000V 25A Igt<60mA), does that make sense? It appears to be a phase-control SCR. There's a nine-page ÒÈÐÈÑÒÎÐÛ THPHCTOPbI datasheet. It comes in an old-style bolt-type housing, but you can find a modern equivalent in a modern package.

For example, a Teccor / Littlefuse SK040R can handle 1kV and 40A and has Igt 40mA max, and comes in an easy-to-use TO-220 package. It costs $3.95 at DigiKey and Mouser.

Be careful with those power-line voltages. One hand behind your back whenever taking measurements on a live circuit.

DEAR Mr. WINFIELD,

THIS POWER SAVER (MINIMIZATOR ENERGY ORIGINAL)CIRCUIT IS VERY OLD AND ITS MAXIMUM PARTS ARE NOT AVAILABLE IN THE MARKET,DO YOU SENT ME ANY NEW CIRCUIT DIAGRAM OF TRUE HOME ELECTRIC POWER SAVER.

THANKS & REGARDS

FOR REETESH SAXENA

Well, I don't know what a "true home electric power saver" is, but if you email me or post the schematic you have, I'd be glad to look it over and see if I can update it for you. Maybe we can figure out what your power saver does by looking at the drawing. But it's likely that we'll be disappointed.

RESPECTED Mr. WINFIELD,

PLEASE SEND ANY ALTERNATE LATEST CIRCUIT DIAGRAM LIKE ABOVE DIAGRAM.

THANKS, REETESH

Aaaakkkk!

This was actually the BETTER looking of the circuits available on the same site.

This one...............less so.

I wondered what all the motor circuitry was for in the original design, apparently just to cool the Thyristors.

All that generated heat and associated cooling AND still able to save 30% energy savings. We Engineers don't get enough credit for what we know and what we really do.

<sigh>

_{Jack - Going back to work to keep the lights on in NZ.}

This circuit does not work as intended and saves you NO energy or money (I think it is also based on an energy saving scam).

Do NOT bother trying to build it as it could damage sensitive electrical equipment, electrocute someone or start a fire.

A quick check of the internet appears to have located the source of the diagram - a Pseudoscience free energy website.

Link

Words alone cannot describe how wrong and unworkable this is.

Oh well, another hope dashed.

And i thought, it was a simple case of thyristor replacement.

And you guys squashed the path, him showing the way to eternal energy!!!

Shame on you!!!