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ampage archive
Vintage threads from the first ten years
Delay chip for Small Stone
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 1/21/2000 7:59 PM |
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Rob |
Delay chip for Small Stone Where can I get a replacement for the BBD chip in a Small Stone, J issue? I've heard you can make do with two different chips that when used together, function well. However, I'd rather just pop in an exact replacement. |
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| 1/21/2000 9:23 PM |
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| R.G. |
The Small Stone doesn't use delay chips, it uses operational transconductance amplifiers (OTAs). The issue J uses the CA3094, which is an OTA and a darlington in a single 8 pin package. CA 3904's are not as common as they used to be, but I have a couple of hundred in my workbench stock. You can replace the 3094 with a CA3080 and a discrete darlington like the MPS A13. You can also use the LM13600 or LM13700 from National. Neither of these will drop into the same PCB holes as the 3094. |
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| 1/22/2000 2:24 PM |
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| AMZ | Later issue Small Stones use the EH1048 chip which is a private numbered version of the CA3094. -Jack |
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| 1/22/2000 2:49 PM |
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| Bill K | I have ordered the CA3094 from MCM electronics. If memory serves, it was around $4.00 so you'll have to get at least seven of them, or order additional items to satisfy the $25.00 min. order. However, *I* am interested in a source for the Reticon SAD 1024. I thought that RG was selling them at one time, but I can't find them on his site. Can anyone suggest a source for this part. What about the MN3007? Thanks, Bill |
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| 1/22/2000 4:31 PM |
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| R.G. |
If you're in need of SAD1024's send me email. I can hand a one-time deal. |
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| 1/22/2000 4:42 PM |
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| Mark Hammer | The MN3007 is relatively easy to find. NTE/ECG make a replacement (as well as one for the MN3101 clock driver). Digikey and Dalbani both sell the Matsushita version. Expect to pay about $4-6 US. I bought mine at Active Surplus in Toronto for $3 (Cdn) a pop. |
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| 1/22/2000 9:23 PM |
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| Bill K | Thanks guys! I'll be shooting you a message, R.G.! Please let me know details concerning a purchase. I'd rather "drop-in" a Reticon over modding for the eight-pin Panasonic. Does anyone remember what life was like without the 'net? I remember waiting days and/ or weeks to even get documentation and schematics. It's AMAZING at how fast it is to access information! Thanks again, Bill |
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