Same standard as CA5U4G
Direct replacement for historical 5U4G or 5Z3
Applies to 5Z3-Mesh and 5U4G-Mesh, which are electrically identical except for the socket.5U4G-Mesh is used as an Octal Socket socket and only 5 pins of it are used (one of them is not electrically connected).5Z3-Mesh uses a 4-pin UX4 socket.
Note that EML tubing is slightly larger in size than conventional tubing.Like most NOS rectifiers, the EML rectifier is a slow-start tube, which provides some protection for the power supply and the overall amplifier.The delay time for the first function is 2 seconds and the maximum current delay is 7 seconds.
A special element for stabilizing the heater voltage is included inside the tube glass.These elements increase resistance at higher currents and help protect the heater from accidental overvoltages.
- Special elements are included inside the tube glass to stabilize the heater voltage. These elements increase resistance at higher currents and help protect the heater from accidental overvoltages.
- Slow Start (2 to 7 seconds)
- For optimal symmetry of the two diodes inside, the filaments are connected in series.
- Each tube is numbered and has a metal tag inside the bulb.
- Two oversized getters flush the entire bottom of the tube.
- Tubes printed with real gold (metal) and red color burned into the glass.
|Filament voltage||5 volts (AC or DC)|
|Filament voltage tolerance||5%|
Maximum Rating(Not available at the same time)
|AC input voltage||550V|
|DC Output Current||
225mA Capacitor mounted
265mA Choke on board
|First capacitor connected to anode||40uF|
|Total copper resistance of complete HV winding||
Not less than 170 ohms in curves 1 to 6
Not less than 230 ohms for curves 7-8