Block Diagrams - Yamaha MX-D1 Bedienungsanleitung

BLOCK DIAGRAMS

The MX-D1 is a high-power, high-performance PWM (Pulse Width Modulation) digital stereo power amplifier, utilizing
Yamaha's latest digital power amplifier and switching power supply technologies.
The following block diagrams show the amplifier and power supply circuits.
Amplifier Block Diagram
Input amp
IN
Analog
feedback
Power Supply Block Diagram
Inrush
protection
circuit
Line filter
AC IN
6
2.8 MHz
clock input
YDA133
Cross
feedback
100V(on)
200V(off)
Choke
Sub-
transformer
YDA134
Real-time
protection
YDA134
Real-time
protection
Isolator
88kHz
Protection circuit OSC
88kHz
Right-channel power supply
Protection
/mute
L
SP OUT
C
+
For op-amps
0V
and LSI
-
+B
OV
-B
Magnetically
-coupled
Driver
rectifier circuit
2.8MHz
(amp)
Microcomputer
External interface
2.8MHz
(amp)
+B
0V
-B