generated from nickdante8/hw-heater-on-oil
23 lines
511 B
Markdown
23 lines
511 B
Markdown
# hw-stroy-master-domofon
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HW for intercom from stroy master domofon.
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## CMD-7
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```mermaid
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stateDiagram-v2
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[*] --> Idle: High Impedance (>10kΩ)
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Idle --> Ringing: Panel applies AC/Pulsed DC
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Ringing --> OffHook: Line load drops to ~300Ω–600Ω (Answer Call)
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OffHook --> DoorRelease: Line shorted to <50Ω (Press Button)
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DoorRelease --> Idle: Panel unlocks door & resets
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```
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| state | Resistance | Voltage |
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| -- | -- | -- |
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| idle | 56 kOhm | 0V |
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| ring | | |
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| peak | | |
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| open | | |
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