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Old 08-07-2018, 04:46 PM
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Electronic M Electronic M is offline
M is for Memory
 
Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 14,762
I guess Encompass it is. After ~20 hours off it still does not power up. I even tried running it off the variac, and the only thing it did differently is continuously try and fail to power it's self on when fed around 70VAC...Above that it failed as it was yesterday and below that it is stone dead.
https://encompass.com/item/5932375/S...1/Ic_Mcz3001db
Two pairs of those chips at $25 a chip is a stupid steep investment for a BPC set, but I like it enough to want to keep it going long-term (meaning I should grab a spare set of OEM chips to have on hand while I can).


I have half a mind to also buy a pair of these cheaper non-OEM chips to test out. https://encompass.com/item/7894629/J...i_s/MCZ3001DB/

I wish there was a detailed datasheet explaining the function and design of the chip and outboard circuit better (all I can find is the pinout and block diagram). Part of me wonders if I could put two of those chips in parallel with each other to reduce strain.
Also, it seems to merely be a feedback controlled combined osc./gate driver for a switch mode power supply there are a lot of such ICs on the market so I wonder if a more rugged equivalent exists that could be built in with no or minor circuit modifications...Hard to evaluate with limited info on the original.
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