License

Public Domain

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Doorbell

1 year ago 158
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

Here is a simple and easy to build doorbell circuit using IC UM 66.The details of UM 66 is given in the older post “Melody Generator using UM 66″

Documents

Sheet_1

BOM

ID Name Designator Footprint Quantity Mounted
1 UM66 U1 TO-92(TO-92-3) 1 Yes C171445
2 BC548 Q1 TO-92(TO-92-3) 1 Yes C36611
3 BC548B Q2 TO-92(TO-92-3) 1 Yes C36611
4 10K R2 RES-ADJ_3386P 1 Yes C125022
5 100 R1 RES-ADJ_3386P 1 Yes C125022
6 220u, 10V C1 CAP-D3.0XF1.5 1 Yes
7 EVQ22705R SW1 KEY-6.0*6.0-4 1 Yes C79156
8 Header-Female-2.54_1x2 P1 HDR-1X2/2.54 1 Yes C49661
9 SIN(0 1 50) AC 1 0 V1 HDR1X2 1 Yes

Attachments

None

Members

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