NOTES: Price = 1 pair (2 pieces)
Features: It is a spherical glass bulb, four white-plated porcelain bases with gold-plated pins, a direct-heating oxide cathode, and a solid, mesh plate triode.
Uses: used in Class A amplifier, Class B amplifier, and Class C oscillator.
Standard working status and parameters:
Heating voltage * .............................................................................. 4.5V
Heating current ........................................................................ 1.2A
Plate voltage ……………………………………………………………… 300V
Gate voltage ** ........................................................................- 24V
Plate current ........................................................................ 15mA
Magnification ........................................................................... 7.3
Gate current ........................................................................ 0.05μA
Plate resistance ……………………………………………………………… 5.0kohms
* AC filament power supply or DC filament power supply
** The AC filament power supply grid or plate circuit is connected to the secondary center of the filament transformer, the DC filament power supply, the grid anode power supply circuit is connected to the filament negative terminal.
Limit working value:
Maximum plate voltage ………………………………………………………… 400V
Maximum plate power consumption ...................................................... 14W
Maximum plate current ……………………………………………………………… 50mA
For delivery time:
Generally, we will dispatch the items within 7 days upon order confirmation; some items may need 15~21 days to get ready for delivery, then we will try our best to dispatch as soon as possible, or we will contact you and offer advice.
For Bulk order:
If you would like to place a bulk order, please contact us for better price and better delivery cost.
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