STK4142II

No. 2665—2/8

Notes.

For power supply at the time of test, use a constant-voltage power supply

unless otherwise specified.

For measurement of the available time for load short-circuit and output

noise voltage, use the specified transformer power supply shown right.

The output noise voltage is represented by the peak value on rms scale

(VTVM) of average value indicating type. For AC power supply, use an

AC stabilized power supply (50Hz) to eliminate the effect of flicker noise

in AC primary line.

°C, V

Parameter

Symbol

Conditions

min

typ

max

Unit

Quiescent current

Icco

20

40

100

mA

Output power

Po (1)

THD = 0.4%,

f = 20Hz to 20kHz

25

W

Po (2)

25

W

Total harmonic distortion

THD

Po = 1.0W, f = 1kHz

0.3

%

Frequency response

Po = 1.0W,

dB

20 to 50k

Hz

Input impedance

Po = 1.0W, f = 1kHz

55

k

Ω

Output noise voltage

1.2

mVrms

Neutral voltage

–70

0

+70

mV

Muting voltage

–2

–5

–10

V

+0

–3

Specified Transformer Power Supply

(Equivalent to RP-22)

Equivalent Circuit