Moderators: Dave Moll, Steve Anderson
Steve Anderson wrote:Here's the LM338 datasheet, this should confirm (or otherwise) the pin-out connections...
They should be a drop-in replacement (electrically) for the LM317, I haven't checked the pin-out though.
If they still refuse to work, you've either got fakes (as per the video) and/or duds.
No idea what the 'P+' means...
It's a reminder of the old adage, "If it seems too good to be true, it probably is."..and at US$16.99 for 100 it seems too good to be true to me...
In the UK these devices are around US$3.00 each in 100-off quantities (Farnell/Element 14)...i.e. US300.00 for 100. Compare is the byword,
Harry Dalek wrote:Yes true but a dangerous game to play in China if caught out ?
Harry Dalek wrote:Thanks Andrew and Steve for your interest here ...Now i know Andrew thanks to your keen eyes ..i don't like the position of the +P very confusing ..more confusing it should of been tested before being sold bit of a fib here .
Steve Anderson wrote:Whoo, wait a moment there! The LM337 has no heatsink! It will go into thermal shutdown when the chip temperature gets near 125 Celcius. The regulator appears to be working OK at first. You do the math, with no heatsink the thermal shutdown will cut in. This is an example of 'Fake News."...and someone not knowing what they are doing...
I wonder how embarrassed he was when he bought a 'genuine' item and got the same result?
This is a case of RTFM (Read The F****** Manual), or in this case, the datasheet.
Steve A.
Harry Dalek wrote:...i forgot about your dislike for Chinese parts...
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