The Hitachi RAC-10SH1 is an advanced cooling system that ensures optimal comfort in any space. To maximize your experience with this remarkable product, be sure to obtain the free Instruction Manual by visiting manualshive.com. Downloading this comprehensive manual is quick and hassle-free, guiding you to unleash the full potential of your Hitachi RAC-10SH1.
– 51 –
4. IPM (Intelligent Power Module)
•
Fig.4-1 shows the intelligent power module and its peripheral circuit.
The three transistors on the positive E side are called the upper arm, and the three transistors on the
negative D side, the lower arm.
Fig. 4-1 Intelligent power module circuit (U
+
-
is ON, V is ON)
IP limitter
E
E
E
Microcomputer
