2N datasheet, 2N pdf, 2N data sheet, datasheet, data sheet, pdf, Motorola, SILICON CONTROLLED RECTIFIERS. High Surge Current Rating — ITSM = 80 Amps. 2N thru. 2N SCRs NJ Semi-Conductors encourages customers to verify that datasheets are current . 2N Datasheet PDF Download – SILICON CONTROLLED RECTIFIERS, 2N data sheet.
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2N Datasheet pdf – SILICON CONTROLLED RECTIFIERS – Motorola
I’ve got 2nn4441 API console power supply here which has a failed 2N ‘crowbar’ thyristor. I thought that the ever-wonderful Skycraft would have one, but they’ve let me down Is there a more common SCR which I might use in its place to effect a repair? I’m afraid I don’t know any part numbers to be 2nn4441 to come up with a sub Harpo Member Rahden, Germany Posts: A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
I’ll have a look and see if Datasheer has 2N Slim pickings in terms of choice The only thing I can find is a ” CD ” click for datasheet. Anyone see a reason why this shouldn’t work replacing a 2N click for datasheet? If 8A is enough until the fuse blows – why did the SCR break? Any caps changes causing higher surge currents?
A more complete datasheet no mention of crowbar use “C”.
Some reading on crowbars http: PDFstarting at pg. SSLtech on August 13, August 14, Well I popped it in and it seems to be okay. Amek power supplies designs from years ago used to destroy their crowbars Also, this crowbar location is far from ideal Datwsheet for the thoughts.
I’ll tell him to bag some original parts off of eBay I don’t like the power supply design either mechanically or datashewt terms of the protection circuit implementation, but the console itself is a thing of sonic beauty.
I got the session up and running in time anyhow, so he’s all good for now.
(PDF) 2N Datasheet PDF Download – SILICON CONTROLLED RECTIFIERS
Generally these aren’t expected to cycle often, and since they will fail as a short circuit they can be undersized for the reservoir capacity and still be functional. I would expect a dead short on the output to take out the primary fuse. Internal fuses are generally added to prevent fire hazard or shock hazard from some other internal dtaasheet failure.
An open internal fuse is as much of a PIA to the customer as any other failure. I once had a hassle with UL about a sticker for an internal fuse SSLtech on August 14, JohnRoberts on August 14, JohnRoberts on August 15, JohnRoberts on August 16, August 18, I’ve always thought crowbars were a bad idea because they assume the unit has a fuse of the correct rating installed.
(PDF) 2N4441 Datasheet download
If a higher value fuse was installed for whatever reason then you have a guaranteed short circuit with inadequate or no overcurrent protection.
Following that reasoning, I think it’s best to replace the fuse with a 22 caliber rifle shell. Then, when the crowbar trips, the rifle shell fires, hopefully killing either the unit itself or the person who designed the circuit, before the power supply catches on fire.
August 19, Datashet I have money I buy gear. If there’s any left I buy food. What’s in your “drawer of shame”? The GAP in my slow coming knowledge October 20, May 08, June 24, June 14, ,