The board looks like phenolic resin, what it was used for I have no idea.
Can anyone take a shot identifying the micro in the attached pic? It's an 18-pin DIP package and reads:
LESTER 2409
01950 V1.0
9650 L1
The 9650 is likely a date code. This is in a Invacare Action "24 Volt Fully Automatic Battery Charger" manufactured in 1997. All the other parts are easy to ID but this is an oddball.
Most likely a re-branded microcontroller (guessing by the adjacent ceramic resonator). A PIC would be my guess by the power line (big fat line) position in the middle.
Lester 240901950 shows up in searches, but no datasheets that I could find.
Thank you, guys. I did quite a bit of searching and missed that Lester was the name of the company that manufactured the entire charge controller.
Most likely a re-branded microcontroller (guessing by the adjacent ceramic resonator). A PIC would be my guess by the power line (big fat line) position in the middle.
Position of the resonator doesn't fit with any PIC I know.
On the other hand, it does fit the
Zilog Z86.
I am relatively sure these are PCB fuses but I can't seem to find the rating. Does anyone know what the rating of these is?
Thanks,
One black band = 2A according to this:
No warranties whatsoever of course...
One black band = 2A according to this:
No warranties whatsoever of course...
Thanks, this helps!
I may sacrifice one for a test!
anybody recognise the manufacture logo of this microswitch looks like alps, but i can't find any datasheets about alps micro switchs
cheers AndersAnd i moding this agetec aracde stick to usb
I have this device that is made by WRE (Wide Range Electronics), model 642-115. Inside is what looks like a transformer, but there is no secondary output. It draws 9.5 amps when on, is very heavy, and when on with a steel nail on it it orients the nail from left to right.
My best guess is it's a degausser. Does anyone know this device?
I have this device that is made by WRE (Wide Range Electronics), model 642-115. Inside is what looks like a transformer, but there is no secondary output. It draws 9.5 amps when on, is very heavy, and when on with a steel nail on it it orients the nail from left to right.
My best guess is it's a degausser. Does anyone know this device?
Yes a degausser / magnetic eraser to delete magnetic tapes, floppy discs, hard drives or similar.
A "transformer" with no secondary is just a coil. In this case the coil is used to create a very strong magnetic field.
Don't put a mechanical watch or credit card anywhere near it.
Hee's a similar one with a magnetic tape on top of it.
the most expensive one I found for sale with a quick search on eBay is 779 USD, so you never know, it might still be worth something:
http://www.ebay.com/itm/400742606111
Many of the final-generation digital tape media were very-high-coercivity and required very strong magnetic fields to erase the tape. Thus the high prices for what would have otherwise simple commodity degaussers (half-a-transformer as AndersAnd said.)
Well how about that? I got it for free, figuring I could use the enclosure for something. It's not as big as the high dollar ones on ebay but still, might be worth more than I paid.
Thanks all
Bill
While cleaning up my parts bin I found this. Curious, I wanted to see what it was so I pulled out my Fluke and measured about 11 MOhms. I then checked it again and got 7M. So I pulled out another DMM, my Amprobe, 9M, again another Fluke, 15M. I then checked it with my Electrometer, 23M, I then used my LCR meter, 3.4K, 2nF capacitance and no inductance. But the curious problem, I get widely different measured values across all my test gear which has me curious as to what this is? If anything, just out of curiosity!
It is a diode............
Likely 1N745 200V zener diode.
What is it ,glass? Is there any text on it beside the C D I'm imagining to see?
What is it ,glass? Is there any text on it beside the C D I'm imagining to see?
It might be glass or an epoxy resin of sorts. It has CD printed twice on it. SeanB mentioned it may be a diode, but it does not have the properties of most diodes I worked with.
It is a diode............
Likely 1N745 200V zener diode.
Thanks, I'll take a look at the datasheet.
It is a diode............
Likely 1N745 200V zener diode.
Your right, it's a zener. Never even thought to check that, the coding on the part got me. Not sure I ever ran across banding like that with a zener diode. Thanks!
It is a diode............
Likely 1N745 200V zener diode.
Why 74
5?
As far as I can tell the color code is violet (7), yellow (4),
blue (6) and the 4th ring looks brown (A) but the picture isn't too well lit, so I'm not entirely sure from the picture if the 4th ring is brown (A) or red (B)? So shouldn't it be 1N74
6A or 1N74
6B?
The brown or red 4th ring indicates it's an 'A' or 'B' model respectively: 1N746
A or 1N746
B according to this Diode Color ID Chart :
http://www.crystalradio.net/cal/diodeid.shtmlYou can also entered the color code as an 1N color code in MiscEl [Miscellaneous electronics calculations]:
http://www.miscel.dk/MiscEl/miscel.html1N746A screenshot:
1N746B screenshot:
Easy enough to tell if it is a 3v or 200V zener then, use a resistor and a 10v supply. I got the diode part right, though I probably misread the colours on it.
5, 6 what is a simple one digit error in the LSB going to do anyway............