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dpdt-relay-module

Simple relay module uses inexpensive 12V DC relays to control a 16VAC load.

Schematic and layout using KiCad 7.0

The PCB can ordered at https://www.jlcpcb.com reorder number Y1-6089045A.

Schematic:

Image

Assembly: Image

Bill of Materials:

Ref Digikey # Description
D2 1N4148A0GCT-ND 1N4148 A0G DIODE GEN PURP 100V 150MA DO35
K1 255-1733-ND JW2ASN-DC12V RELAY GEN PURPOSE DPST 5A 12V
C1 4191-EY1H221MP51012ECT-ND EY1H221MP51012E ALUMINUM ELECTROLYTIC CAPACITORS
J1 102-6149-ND TB002-500-06BE TERMINAL BLOCK, SCREW TYPE, 5.00
R1 13-CFR-50JB-52-270R-ND CFR-50JB-52-270R RES 270 OHM 5% 1/2W AXIAL
D1 641-1344-5-ND DF005S-G BRIDGE RECT 1PHASE 50V 1A DFS

For a complete description of how I used relay module for a video doorbell installation, see the following page:
https://community.home-assistant.io/t/doorbell-automation-project/611389

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