S0740 800 196/E101019/P76
- 21 -
ca41_15_1
15AP1:4
Charging circuit
When the mains power supply is turned on, smoothing capacitors 15C1 and
15C2 charge up via resistors R15 and R16.
When there are gate pulses present at pulse transformer TR2, transistor Q19
pulls the 'shutdown' signal to 0VA.
PWM circuit IC2 generates gate pulses to the thyristor in IGBT module IC8, the
thyristor short-circuits resistors R15 and R16.
Resistors R17 and R18 are potential dividers and discharge resistors for 15C1
and 15C2.
The PWM circuit generates a reference v5.1 V, this is used by the
over/under voltage and temperature monitoring circuits.
Содержание Aristo Mig 3001i
Страница 10: ...S0740 800 196 E101019 P76 Mig 3001i 10 ca41_00 ...
Страница 11: ...S0740 800 196 E101019 P76 Placement of the circuit boards Mig 3001i 11 ca41_00 ...
Страница 12: ...S0740 800 196 E101019 P76 Tig 3001i Placement of the circuit boards Tig 3001i 12 ca41_00 ...
Страница 13: ...S0740 800 196 E101019 P76 13 ca41_00 ...
Страница 23: ...S0740 800 196 E101019 P76 15AP1 Component positions 23 ca41_15_1 ...
Страница 35: ...S0740 800 196 E101019 P76 20AP1 Component positions version 1 35 ca41_20_1 ...
Страница 36: ...S0740 800 196 E101019 P76 20AP1 Component positions version 2 36 ca41_20_1 ...
Страница 47: ...S0740 800 196 E101019 P76 Power board 15AP1 measuring points 47 ca41f2pwr ...
Страница 49: ...S0740 800 196 E101019 P76 49 ca41f2pwr Secondary board 15AP2 measuring points ...
Страница 53: ...S0740 800 196 E101019 P76 Soft starting measuring points power board 15AP1 53 ca41f2soft ...
Страница 75: ...S0740 800 196 E101019 P76 75 emptypage ...