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Description
Introduced in 1938, the RX21A is a half-wave mercury vapor rectifier incorporating features which enable it to withstand high peak inverse voltages and to conduct at relatively low applied voltages. The shielded ribbon filament, edgewise-wound, provides a large emission reserve and long life. White ceramic base with five pins.
Type
image
Identifier
F6D9D38B-6AAB-44AD-8597-662201554115 2003-1-480
Subject
Nineteen forties Eitel-McCullough, Inc Nineteen fifties Electric current rectifiers Vacuum-tubes
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