Crown Audio Principles of Operation, CE Series Power Amplifiers, page, Balanced, Variable

CE Series Power Amplifiers

5 Principles of Operation

Figure 5.1

CE Series

Amplifier Block

BALANCED

Diagram INPUTS (Shown with

Standard Input Module)

TO CLIP	COMPRESSOR
INDICATOR	CONTROL

BALANCE	VARIABLE	BUFFER
	GAIN STAGE
INPUT STAGE

TO SIGNAL

PRESENCE

INDICATOR

+HI-VOLTAGE BOOTSTRAP

						TURN-ON
						DELAY
		CURRENT
		SOURCE	TRIPLE-DEEP	HEATSINK
			DARLINGTON	TEMPERATURE
			NPN POSITIVE
			OUTPUT STAGE			+
			TDVI		OUTPUT
		BIAS			CONTROL
			LIMITER
						OUTPUT
			TRIPLE-DEEP
					DC
			DARLINGTON
	TRANSLATOR	LVA	NPN NEGATIVE		PROTECT
			OUTPUT STAGE
ERROR			HEATSINK
AMP	–VCC	–VCC		TRANSFORMER		TO FAULT
			TEMPERATURE
				TEMPERATURE		INDICATOR
			PROPORTIONAL		+ VCC
DC PROTECT			SPEED	POWER
					+ 15V
			FAN
	LOGIC
			CONTROL	SUPPLY	– 15V
					– VCC
	TO
	FAULT				BOOTSTRAP	+ HI-VOLTAGE
	CONNECTOR		FAN
					CIRCUIT	BOOTSTRAP

MUTE

page 20 Operation Manual