Re: Callins capacitor?
Amazing how 40 year old capacitors continue to measure good.
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Callins capacitor?
Why do Callins capacitors command such a high premium?
[url]https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b[/url]
What's so special about them?
What's a good substitute?https://Why do Callins capacitors co...od substitute?Why do Callins capacitors command such a high premium?
[url]https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b[/url]
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Re: DPSN-125CP schematic?
ebay only seems to offer used supplies. And a used supply may fail the day after it's installed. That's no good, for my purposes. A genuinely refurbished supply ought to last longer.
In the end it's not about the money. It's about the reliability.
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Re: DPSN-125CP schematic?
ASTEC model AA23280 is yet another OEM supply used by Cisco. It's older and easier to understand. Apparently Cisco replaced it with a Delta sometime around 2008. The AA23280 uses an AS3842 controller chip, which is pin compatible with the TI UC3842. As expected, there's a lot of quality, public, Unitrode documentation available on TI's website:
[URL="http://www.ti.com/lit/an/slua143/slua143.pdf"]http://www.ti.com/lit/an/slua143/slua143.pdf[/URL]
Here's the AS3842 datasheet:
[URL="http://pdf1.alldatasheet.com/datasheet-pdf/view/86496/ETC/AS3842.html"]http://pdf1.alldatasheet.com/datasheet-pdf/view/86496/ETC/AS3842.html[/URL]...
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DPSN-125CP schematic?
This particular Delta power supply is one of at least two different OEM supplies used by Cisco. The DPSN-125CP version of the Cisco supply is shown at the ebay link below:
[URL="https://www.ebay.com/itm/Cisco-341-0098-02-Power-Supply-for-WS-C2960G-Switch-DPSN-125CP/253474622613"]https://www.ebay.com/itm/Cisco-341-0098-02-Power-Supply-for-WS-C2960G-Switch-DPSN-125CP/253474622613[/URL]This particular Delta power supply is one of at least two different OEM supplies used by Cisco. The DPSN-125CP version of the Cisco supply is shown at the ebay link below:
[URL=
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Re: New Members - please post your introductions here
Greetings. My older than normal father first used computing machinery during WWII. Near the end of his career he used PDPs. I started where he left off and have now worked in the electronic/computer industry for decades.
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