Datasheet

L78S00 SERIES
20/24
Figure 30 : Power AM Modulator (unity voltage gain, I
O
≤ 1A)
NOTE: The circuit performs well up to 100 KHz.
Figure 31 : Adjustable Output Voltage with Temperature Compensation
NOTE: Q
2
is connected as a diode in order to compensate the variation of the Q
1
V
BE
withthetemperature.CallowsaslowrisetimeoftheV
O
.
Figure 32 : Light Controllers (V
Omin
=V
XX
+V
BE
)
R
2
V
O
=V
XX
(1+ ) +V
BE
R
1
V
O
rises when the light goes up
V
O
falls when the light goes up