JVC RX-D Series Training Book page 19

Bootstrap Voltage
Bootstrap Voltage
The additional
higher positive
voltage added to
the low DC voltage
INPUT
AVERAGE
DC 30V
Averag
e
+30v
USE THE DC CLAMPER
1. Capacitor coupling block out the input DC level.
OUTPUT
AVERAGE
2. The DC clamper recovers the DC level at output. *
*
In fact it is about +29.3v due to diode forward bias drop.
3. The DC clamper adds DC level to the output.
+
12v
12v
-
DC
Averag
e
0V
+0v
Averag
e
+30v
29.3V
Averag
e
42V
+42v