# Low-Cost RCD Demonstrator ## Description Safe low-voltage educational residual-current device demonstrator for wet-area protection concepts ## Project Details - **Owner:** vivekkailash - **Created:** 6/22/2026 - **Last Updated:** 6/22/2026 - **Visibility:** Public - **Operating Voltage:** 5V - **Human Interface:** LEDs - **Domain:** Safety - **Implementation Details:** Educational low-voltage residual-current sensing demonstrator; not certified mains protection hardware ## Key Components ### D1 — [SM0805HCL](https://www.flux.ai/adrian95/sm0805hcl~2dj.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SM0805HCL - Datasheet URL: https://www.bivar.com/parts_content/Datasheets/SM0805HCL.pdf - Manufacturer Name: Bivar Inc. - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### D2 — [SM0805HCL](https://www.flux.ai/adrian95/sm0805hcl~2dj.md) - Manufacturer Part Number: SM0805HCL - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.bivar.com/parts_content/Datasheets/SM0805HCL.pdf - Manufacturer Name: Bivar Inc. - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### D3 — [1N4007](https://www.flux.ai/jecstronic/1n4007~7vb.md) - Manufacturer Part Number: 1N4007 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://www.nteinc.com/specs/original/1N4001_07.pdf - Manufacturer Name: NTE Electronics, Inc **Pins:** - anode [pin 2] - cathode [pin 1] ### J1 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md) - Part Type: Connector - Manufacturer Name: Ningbo Kangnex - Manufacturer Part Number: WJ500V-5.08-2P - Connector Type: Terminal Blocks - Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md) - Manufacturer Part Number: WJ500V-5.08-2P - Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf - Connector Type: Terminal Blocks - Part Type: Connector - Manufacturer Name: Ningbo Kangnex **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md) - Manufacturer Part Number: WJ500V-5.08-2P - Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf - Connector Type: Terminal Blocks - Part Type: Connector - Manufacturer Name: Ningbo Kangnex **Pins:** - 1 [pin 1] - 2 [pin 2] ### K1 — [9001-05-01](https://www.flux.ai/adrian95/9001-05-01~dp8.md) - Manufacturer Name: Coto Technology - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.cotorelay.com/wp-content/uploads/2014/09/9000_series_reed_relay_datasheet.pdf - Manufacturer Part Number: 9001-05-01 - Part Type: Relay - Package or Case Code: 90010501 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### Q1 — [2N2222A](https://www.flux.ai/lcsc/2n2222a~00rk.md) - Transistor Type: NPN - Compliance: RoHS - Frequency: 250MHz - Part Type: Transistors/Thyristors/Bipolar (BJT) - Manufacturer Part Number: 2N2222A - Manufacturer Name: ST(先科) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1809200018_ST-Semtech-2N2222A_C118536.pdf - LCSC Part Number: C118536 - JLCPCB Part Class: Extended Part - Package or Case Code: TO-92-3_L4.9-W3.7-P1.27-L - Product Info Url: https://lcsc.com/product-detail/Transistors-NPN-PNP_2N2222_C118536.html **Pins:** - B [pin 2] - C [pin 3] - E [pin 1] ### SW1 — [B3F-1000](https://www.flux.ai/adrian95/b3f-1000~hh8.md) - Manufacturer Part Number: B3F-1000 - Manufacturer Name: Omron Electronics Inc-EMC Div - Part Type: Switch - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3f.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### SW2 — [B3F-1000](https://www.flux.ai/adrian95/b3f-1000~hh8.md) - Manufacturer Part Number: B3F-1000 - Part Type: Switch - Manufacturer Name: Omron Electronics Inc-EMC Div - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3f.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U1 — [LM393DR2G](https://www.flux.ai/adrian95/lm393dr2g~98s.md) - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LM393DR2G - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/lm393-d.pdf **Pins:** - GND [pin 4] - INPUTSA_1 [pin 2] - INPUTSA_2 [pin 3] - INPUTSB_1 [pin 5] - INPUTSB_2 [pin 6] - OUTPUTA [pin 1] - OUTPUTB [pin 7] - VCC [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vivekkailash/low-cost-rcd-demonstrator~vt](https://www.flux.ai/vivekkailash/low-cost-rcd-demonstrator~vt).* --- *Generated from [https://www.flux.ai/vivekkailash/low-cost-rcd-demonstrator~vt](https://www.flux.ai/vivekkailash/low-cost-rcd-demonstrator~vt)*