sigma

74hc595 cascade drive 6-way unconventional relay module

Overview

HC595 is used to drive 4 channels of photorelays + 2 channels of magnetic latching relays, which can be expanded in cascade.

But what I want to convey about this PCB is the advantages of other unconventional relays.

Advantages of optical solid state relays compared to ordinary relays:

Not easily affected by vibration,
Switching speed is slightly faster,
No mechanical action, higher reliability,
Smaller package

Advantages of magnetic latching relays compared to ordinary relays:

It relies on magnetic self-locking after one movement, which saves power when the status does not change frequently.

Production process

Use the wrong resistor package, regret it. Solder the patch and plug in the resistor. Then buy the components . Front, I forgot to order the magnetic latching relay. The ordinary relay is on top.

Design Files

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Update:2025-06-28 03:36:32

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