TUBE VOLTAGE DROP, lb = 350 MA. DC. 25. VOLTS. A. HEATER WARM-UP TIME IS DEFINED AS THE TIME REQUIRED FOR THE VOLTAGE ACROSS THE HEATER TO. REACH 80% OF ITS ...
Tube 12BE3 or Röhre 12BE3 ID5306, Half-Wave Vacuum Rectifier, Duodecar 12-pin, B12C Glass (USA 1961) and shown. Radio tubes are valves.