# 231006802 PCB DESIGN ## Description Adjustable Voltage Regulator Circuit using LM324 IC with Over Current Protection ## Project Details - **Owner:** aleen53rd - **Created:** 9/9/2025 - **Last Updated:** 9/22/2025 - **Visibility:** Public ## Key Components ### D1 — [1N4148-1](https://www.flux.ai/gaby27/1n4148-1.md) - Part Type: Diode - Manufacturer Name: Microchip - Datasheet URL: https://www.mouser.com/datasheet/2/308/1N914_D-1801484.pdf - Manufacturer Part Number: 1N4148-1 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### D2 — [1N4148-1](https://www.flux.ai/gaby27/1n4148-1.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Manufacturer Name: Microchip - Manufacturer Part Number: 1N4148-1 - Datasheet URL: https://www.mouser.com/datasheet/2/308/1N914_D-1801484.pdf **Pins:** - A [pin 2] - K [pin 1] ### D3 — [1N4148-1](https://www.flux.ai/gaby27/1n4148-1.md) - Manufacturer Name: Microchip - Datasheet URL: https://www.mouser.com/datasheet/2/308/1N914_D-1801484.pdf - Manufacturer Part Number: 1N4148-1 - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### D4 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Forward Voltage: 1.70 - Emission Coefficient: 3.73 - Breakdown Voltage: 0V - Series Resistance: 0.42Ω - Saturation Current: 93.2e-12A **Pins:** - A [pin 2] - K [pin 1] ### D7 — [1N4733A](https://www.flux.ai/lcsc/1n4733a.md) - Product Info Url: https://lcsc.com/product-detail/Zener-Diodes_ON_1N4733A_1N4733A_C140851.html - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010303_onsemi-1N4733A_C140851.pdf - Manufacturer Part Number: 1N4733A - Package or Case Code: DO-41_BD2.4-L4.7-P8.70-D0.9-RD - LCSC Part Number: C140851 - Part Type: Zener Diodes - Manufacturer Name: onsemi(安森美) **Pins:** - A [pin 2] - C [pin 1] ### J1 — [TerminalBlock-01x02P-5.00mm](https://www.flux.ai/vasy_skral/terminalblock-01x02p-500mm.md) - Part Type: Connector **Pins:** - P1 [pin 2] - P2 [pin 1] ### J2 — [TerminalBlock-01x02P-5.00mm](https://www.flux.ai/vasy_skral/terminalblock-01x02p-500mm.md) - Part Type: Connector **Pins:** - P1 [pin 2] - P2 [pin 1] ### Q1 — [2N4401TA](https://www.flux.ai/jecstronic/2n4401ta.md) - Manufacturer Name: onsemi - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://rocelec.widen.net/view/pdf/izahwonzju/ONSM-S-A0003587700-1.pdf - Manufacturer Part Number: 2N4401TA - Part Type: Transistor **Pins:** - B [pin 2] - C [pin 3] - E [pin 1] ### Q2 — [TIP29AG](https://www.flux.ai/adrian95/tip29ag.md) - Manufacturer Part Number: TIP29AG - Part Type: Transistor - Datasheet URL: https://www.onsemi.com/pdf/datasheet/tip29b-d.pdf - Manufacturer Name: onsemi - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin 1] - C [pin 2] - E [pin 3] ### U1 — [LM324N](https://www.flux.ai/adrian95/lm324n.md) - Manufacturer Name: Texas Instruments - Part Type: Operational Amplifier (OP-AMP) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LM324N - Datasheet URL: https://www.ti.com/lit/ds/symlink/lm224.pdf **Pins:** - INPUT1- [pin 2] - INPUT1+ [pin 3] - INPUT2- [pin 6] - INPUT2+ [pin 5] - INPUT3- [pin 9] - INPUT3+ [pin 10] - INPUT4+_1 [pin 12] - INPUT4+_2 [pin 13] - OUT1 [pin 1] - OUT2 [pin 7] - OUT3 [pin 8] - OUT4 [pin 14] - VCC [pin 4] - VEE/GND [pin 11] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/aleen53rd/231006802-pcb-design](https://www.flux.ai/aleen53rd/231006802-pcb-design).* --- *Generated from [https://www.flux.ai/aleen53rd/231006802-pcb-design](https://www.flux.ai/aleen53rd/231006802-pcb-design)*