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This is a new old stock cadmium sulfide photocell. Part Number CDS-911. Manufactured by JEM. It is a large CDS cell which will directly drive relays or other devices of appropriate resistance. It was manufactured in 1948. This cell has a sealed, very thick robust case with a thick glass window. It was probably manufactured for harsh environments. RCA also made cells with this same case size in that era. ON resistance is 150 Ohms (approx.) with 100W incandescent at 3 ft. OFF resistance falls quickly to over 20M Ohms, in 15 sec. falls to over 1G Ohm, and then finally to over 3G dark resistance. There is a small quantity available. This item will be packed well.Fast shipping! Clickhereto check out our other salesforaudio equipment & related items.
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