Description: Voltage converter for battery operated tube radio receivers / transceivers. Solution to the problem of mobile use. Allows for mobile operation of vintage DC operated radios from a single 12V battery. This is a battery consolidator providing multiple voltages from a single DC source. It also becomes a battery eliminator when powered by an AC/DC adapter (also available). Converts 11 - 30VDC (Vin) to necessarily filament, plate, and grid voltages. “A” (filament) supply : “Ax”: 1.25V to 10V / 3 amp, “B” (plate) supplies: 135V/ 80mA, 90V/ 60mA, 67.5V /45mA, 45 and 22.5V/ 5mA, (sum of all “B” supplies < 80mA, “C” (grid bias) supplies: -4.5V, -9V and -22.5V /2mA (grid voltages easily user modified). B-, A- and Vin(-) are common in this converter. It CAN NOT BE USED to power farm radios using 1.5 and 90V batteries. Radios requiring B- to be connected to A+ will operate with B-connected to A- but with slightly reduced plate voltages. DC input can be supplied by battery (see photo, battery not included) or appropriately sized linear AC / DC adapter (see photo, adapter not included). 32W linear adapter can be provided for an additional $20.00 (contact seller). Two indicators: one indicates battery is connected and voltage converter is ON, the other indicates radio is also ON and drawing current. Standby power < 2.5W (converter ON and radio OFF). For use on the bench OR for mobile operation. Small size (4.7 x 4.7 x 4” height) with cover on (3” height with cover off). Light weight (18 oz. without battery or adapter). DC in: 11 - 30V. Operating temperature 0-35 deg C. Contains input and output EMI filters. Overload, short circuit and reverse polarity protected. User Manual. 90 day guarantee. Free domestic shipping. Converters can be connected in series to provide higher “B+” voltages: 157.5, 180, 202.5, 225 or 270V (247.5V can also be provided with series connection and simple adjustment). Series connection requires two converters and two batteries or AC/DC adapters.
Price: 135 USD
Location: Carlsbad, California
End Time: 2024-09-25T20:53:47.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Unbranded
Input Battery Size: Rechargeable
Manufacturer Warranty: 90 days
