KT88
- Maker
- Cetron
- Brand
- National Electronics
Tube-number record
KT88
11 archive entries
BrandGenalex
ClassBeam Pentode
BaseOctal
Filament6.3 V @ 1.6 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeTubular
Base MaterialMetal shell wafer octal
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage600 V
Plate Dissipation35 W
Grid 2 Voltage600 V
Cathode Current175 mA
H-C Voltage150 V
Audio Performance
Typical THD1%
Power Output100 W
Key Features
- Beam Pentode
- Metal shell wafer octal base
- Indirectly heated
- Up to 100W output for a pair
- 150W intermittent Class B operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Connection | 250 V | 11000 | 12000 | 8 | 140 mA |
| Triode Connection | 250 V | 12000 | 670 | 8 | 160 mA |
| Push-Pull Ultra-Linear (Cathode Bias) | 500 V | — | — | — | 174 mA |
Application Notes
The KT88 is primarily designed for the output stage of an a.f. amplifier for which two valves will provide up to 100W output. It is also suitable for use as a series valve in a stabilised power supply.
Datasheets
Datasheet: KT88.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
