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New Universal Interstage Transformer, 20,000 ohm CT primary with 80,000 ohm quad split secondary. The quad split secondary arrangement (each secondary section is 1/2 the turns of the whole primary) means that as many as 4 tubes can be driven, each independently biased (if wired for 1:1 ratio). May be wired for 1:1 or 1:2 primary to secondary ratio.
Maximum recommended primary DC unbalanced current is 10 ma, however, note that as with other transformers of this type, best performance will be had by having no DC unbalance (operating either parallel fed or push-pull) and with as little driving power required by the tubes being driven as possible (if the driven/output tubes are being run Class A1 or AB1, there will be no driving power required except when the tubes are driven into clipping).
Typically this type of transformer is used with a low-gain tube such as 12AU7, 12BH7, 6CG7, 6SN7 or 6J5 to drive output tubes such as 6L6, 6550, 2A3, 45 or 6B4G. The advantage of using this type of transformer in certain applications is that it gives a different type of clipping behavior, the output tube grids can be driven somewhat into the positive range (because of the low DC resistance in the grid circuit), if a low impedance bias supply is used.
This transformer could also be used as a "bridging" (high-Z instead of 600 ohms) balanced input transformer for a line amplifier, compressor or power amplifier.
Nice hefty unit, dimensions are 2 5/8 inch wide by 2 1/4 inch tall on 3 1/8 inch mounting centers, weight 1 1/2 pounds (approx 700g).
Transformers are warranteed by the manufacturer against defects of materials & workmanship for 6 months from date of purchase.
Approximate shipping weight: 2 lbs from zip 60634, Please see shipping caluculator below . Illinois Residents must pay 9.00% sales tax.
Buyer must respond within 5 days of auction ending. Transactions not completed in 30 days will be resold. Ask any questions before you bid, once you bid you agree to all terms of the auction. Please check our other auctions Triode Electronics, for more electronic and vintage goodies. For Tubes and Parts - Check Us Out! Triode Electronics 5633 W. Irving Park Rd. Chicago, IL 60634 Thanks for Looking... Ph 773-871-7459 fax 773-327-5652
You are bidding on a single transformer.
Export sales outside the USA only to countries where postal insurance is available. (yes, that includes Canada) We will only ship these outside the USA by air shipping, if you are outside the USA please see shipping caluculator below or contact us for a shipping quote before bidding.
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On Oct-20-08 at 17:06:54 PDT, seller added the following information:
Backorderd till end of month. Sorry.
On Aug-31-09 at 20:19:11 PDT, seller added the following information:If you are unhappy with the shipping calculators price, or want a combined shipping quote? Send us a message. Thanks
Seller charges sales tax for items shipped to: IL(10.25%) .
Return policy
Item must be returned within
Refund will be given as
Return policy details
30 days after the buyer receives it
Money Back
Item may be returned for credit within 30 days if UNUSED and UNINSTALLED and returned in identical condition to which it was recieved, and returned in identical or equivalent packaging (meaning corrogated cardboard box, not paper or bubble bags). The manufacturer warrants this item against defects of materials and workmanship for EXCHANGE ONLY for 6 months after purchase. Return shipping is at customers' expense.
The buyer is responsible for return shipping costs.
We accept major credit cards, and ship ground with UPS, & USPS (USPS only for overseas, POBox). Have your Item description, Ebay number, and shipping/payment/email info when you call to: Triode Electronics 5633 W. Irving Park Rd, Chicago IL 60634. Ph 773-871-7459 10AM-5PM Central Time Mon-tue-thur-Fri. Thanks.
Seller assumes all responsibility for this listing.
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