Description

RARE USED AMPEREX 217C HIGH POWER AUDIO RECTIFIER RARE LOOKS UNUSED BRASS BASED AMPEREX MODEL JAN CEP-217C SPECIAL HALF WAVE RECTIFIERS FOR AUDIO APPLICATIONS - GRIDLESS VERSION OF 211 OR 805 TRIODE - LARGE T-18 BULB AND JUMBO 4 PIN BASE Manufactured March 1946. Perfect for your high power amplifier. Photos are the actual AMPEREX 217C The 217C is a directly heated rectifier with a thoriated tungsten filament. It is a half wave rectifier so only contains a single diode. It is a transmitting tube on a Jumbo 4 pin base, the same size as that of the 211. It has a top cap for the plate connection. The pinout is shown on the left. At first look the 217C looks like a transmitting triode with a plate cap, for example the 805. Construction wise it is probably just like a 805 without grid. The filament has the same specs of 10V at 3.25A like a 805 or 211 . It was advertised for applications which are sensitive to RF hash which can be present when the usual mercury vapour rectifiers are used. To my knowledge not many rectifiers with a thoriated tungsten filament existed, which makes this tube rather unique. Buyer to add $12. shipping (USA). QUESTIONS? please ask them before bidding. PAYMENT INFORMATION: You can either use the "PAY NOW" button at the end of the auction, or I'll send you an invoice. I try to ship most items within 2 business days of payment. eBay NOW REQUIRES A SIGNATURE UPON DELIVERY FOR ALL SHIPMENTS OVER $750.. INTERNATIONAL BIDDERS: I accept payments from International Bidders for amounts up to $250. For larger amounts, contact me. SELLING INFORMATION: I try to inspect most of the equipment I list for auction, and to describe each completely & carefully. However, since some of the items can be over 60 years old, all items are sold "as is". Almost every older electronic item will benefit from a careful alignment and cleaning or other restoration. Images may not be unique. Shipping charge may not include AK or HI Powered by SixBit's eCommerce Solution