Schaltungsbeschreibung / Circuit Desription; Signal Path - Grundig M 37-DC Bedienungsanleitung

Schaltungsbeschreibung / Circuit Desription

1008
17
1 4,5V
16
*
15
2
10,5V
14
3
6,5V
13
6,5V
4
12
10,5V
11
5
10
38V
6
9
7
8

Signal path

pos. halfwave
neg. halfwave
1008
17
1 4,5V
16
*
15
2
10,5V
14
3
6,5V
13
6,5V
4
12
10,5V
11
5
10
38V
6
9
7
8
Signal path
pos. halfwave
neg. halfwave
Conventional power stage
+A
output signal
%
Output power
Power
dissipation
Voltage drop on power stage IC
Voltage drop on switching transistor(s)
Benefit - voltage drop on switching transistor(s) reduces total power dissipation
2 - 4
1205
6202
1N5392
6203
1203
1N5392
6204
1204
1N5392
6205
1N5392
2206
100n
D5SBA20
6201
100n
2211
Fig. 1
1205
6202
1N5392
6203
1203
1N5392
6204
1204
1N5392
6205
1N5392
2206
100n
D5SBA20
6201
100n
2211
Fig. 2
Class G amplifier
+C
output signal
activating point +A
%
Output power
+A
Power
dissipation
t
Fig. 4
18V
+C
25V
+B2
25V
+B1
36V
+A
6201
15 D5SBA20
17V
13
17V
11
6201
18V
+C
25V
+B2
25V
+B1
36V
+A
Super class G amplifier
+B
+C
output signal
activating point +A
activating point +B
%
Output power
+A
+C
Power
dissipation
t
M 37-DC
18V
1205
+C
Fig. 3
+A
+B
+C
+A
+B
+C
t
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