Toshiba 1997 G Series Troubleshooting Manual page 10

CT terminal voltage
OSC output signal
ON
Low side
gate voltage
V
G(L)
OFF
High side
gate voltage
V
G(H)
(Pin14)
Push-pull
output voltage
(Pin 14)
Push-pull
output current
Voltages On IC801
Using a 100 W light bulb as a Losd
Pin Voltage Pin
1 150 Vdc
2 0 Vdc 10
3 5.8 Vdc 11
4 2.3 Vdc 12
5 5.8 Vdc 13
6 5.8 Vdc 14
7 3.6 Vdc 15
8 0.4 Vdc
Fig. 8 DC voltages on IC801
Dead time
OFF
ON
Figure 7 Terminal waveforms
8
Voltage
9 17.7 Vdc
7.8 Vdc
0.9 Vdc
0 Vdc
NC
75 Vdc
83 Vdc
=4V
=2.5V
=V
IN
terminal voltage (Pin 1)
OV
OA