Driving circuit diagram
Source: InternetPublisher:睡不醒的小壮 Keywords: Driver circuit microcontroller MDASH Updated: 2021/08/26
Driving circuit: The driving circuit is shown in Figure 18-12. The driving part is the bridge connecting the microcontroller and the air conditioner operating parts.
The digital signal level output by the P4.0-P4.3 port (@pin~12pin) and P7.1-P7.3 port (④pin~⑥pin) of the microcontroller is sent to the driver chip, which
can control the stepper motor. , and energize relays K4, K5, and Kl. This enables the control of the high speed, medium speed of fans and indoor fans and
the start and stop of the compressor .
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