CV2453 low noise RF triode
amplifier
 |
This valve measures 54x19mm
overall and has a B9A base. |
The EVS data states this valve
was replaced by CV4105
| Heater voltage |
6.3V |
| Heater current |
370mA |
| Max anode voltage |
250V |
| Max anode dissipation |
2.5W |
| Max cathode current |
20mA |
| Max heater cathode voltage |
100V |
| Mutual conductance * |
15mA/V |
| Capacitances
(in close fitting metal screen) |
| Cge nom |
3.55pF |
| Cae nom |
0.055pF |
| Cag nom |
1.6pF |
| Typical operating
conditions: Class A UHF grounded grid amplifier |
| Anode voltage |
130V |
| Grid voltage |
-1V |
| Anode current |
16mA |
| Power gain |
10db |
| Bandwidth |
50MHz |
| Noise factor |
|
| 900MHz |
11.5db |
| 800MHz |
10.9db |
| 700MHz |
10.2db |
| 600MHz |
9.4db |
| 500MHz |
8.4db |
*: Mutual conductance measured
at Va=180V, RL=3.3k ohms, Rk=68 ohms, in a mutual conductance bridge max
frequency 1kHz, max input signal to grid 100mV RMS.
Power gain and bandwidth may
be adjusted by altering the coupling between the anode line and the output
loop. Under the typical conditions shown above the relationship between
power gain and bandwidth at 900MHz is:
| Power gain |
Bandwidth |
| 6db |
100Mhz |
| 8db |
70MHz |
| 10db |
50MHz |
| 12db |
37MHz |
| 14db |
30MHz |
| 16db |
25MHz |
|
| Pin |
Function |
| 1 |
Grid |
| 2 |
Cathode |
| 3 |
Grid |
| 4 |
Grid |
| 5 |
Anode |
| 6 |
Grid |
| 7 |
Heater |
| 8 |
Heater |
| 9 |
Grid |
|
