150
WhitakerAudio
Characteristics curves for the 6BQ7 are diagrammed in Figure 10.8.
10.5 6C4
The 6C4 is a 7-pin miniature triode used as high frequency amplifier or oscillator The pin layout
is shown in Figure 10.9.
Plate voltage
250 V
1
Cathode current
20 mA
Plate dissipation
2 W
Characteristics
Plate supply voltage
150 V
Cathode bias resistor
220
Ω
Amplification factor
38
Plate resistance (approx.)
5900
Ω
Transconductance
6400
μ
mhos
Plate current
9 mA
Grid voltage (approx.)
For plate current of 100
μ
A
–6.5 V
For plate current of 10
μ
A
–
Maximum grid circuit resistance
500 k
Ω
Notes:
1 This rating may be as high as 300 V under cutoff conditions when the tube is used as a cascode ampli-
fier, the two units are connected in series, and the heater is negative with respect to the cathode.
2 With the external shield connected to the internal shield.
Table 10.4
Key Parameters of the 6BQ7
Figure 10.8
Characteristics curves for the 6BQ7.
Figure 10.9
Terminal pinout of the 6C4.
Summary of Contents for AM/FM Stereo Tuner 2012
Page 1: ...WhitakerAudio AM FM StereoTuner User and Assembly Manual...
Page 11: ...11 AM FM Stereo Tuner Figure 1 1 Schematic diagram of the AM tuner section...
Page 17: ...17 AM FM Stereo Tuner Figure 1 2 Schematic diagram of the FM tuner section...
Page 34: ...34 WhitakerAudio Figure 3 1 Component layout for the AM tuner PWB...
Page 36: ...36 WhitakerAudio Figure 3 3 Component layout for the FM tuner PWB...
Page 69: ...69 AM FM Stereo Tuner Set the FM tuner board aside it will be used later b...
Page 101: ...101 AM FM Stereo Tuner Figure 5 11 Chassis view of the AM FM Stereo Tuner...
Page 159: ...159 AM FM Stereo Tuner...
Page 160: ...WhitakerAudio AM FM StereoTuner...
