---
title: "Power Supply Circuit"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:POWER_SUPPLY_CIRCUIT"
  data_integrity_hash: "ca7452bddc98e2772d2f99b9a5ccce29"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:POWER_SUPPLY_CIRCUIT"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/power-supply-circuit.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/power-supply-circuit"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "4.75-5.25 VDC at 2.0 A maximum continuous load"
    unit: "V"
engineering_limits:
  max_safe_operating_point:
    value: 30
    unit: "VDC"
    consequence: "Semiconductor junction breakdown at 30 V reverse bias voltage, causing thermal runaway in voltage regulator ICs"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Input voltage transient exceeding 30 VDC for &gt;1 μs"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "TVS diode clamping at 28 V with 600 W peak pulse power rating"
  - node_2:
      trigger: "Ambient temperature exceeding 85°C with &gt;1.5 A load current"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Copper heat sink with 15°C/W thermal resistance and forced air cooling at 2 m/s"
bom_nodes:
  voltage-regulator-ic:
    type: "part"
    urn: "URN:CNFX:ME:VOLTAGE_REGULATOR_IC"
    interface_type: "physical-logic-coupled"
  filter-capacitors:
    type: "component"
    urn: "URN:CNFX:ME:FILTER_CAPACITORS"
    interface_type: "physical-logic-coupled"
  rectifier-diodes:
    type: "component"
    urn: "URN:CNFX:ME:RECTIFIER_DIODES"
    interface_type: "physical-logic-coupled"
  pcb-traces:
    type: "component"
    urn: "URN:CNFX:ME:PCB_TRACES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - EU LOW VOLTAGE DIRECTIVE 2014/35/EU"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/power-supply-circuit.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "2f99066dde90e14110f83242157b6e50dbd2eabeb103d2aa06570999b342793b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Power Supply Circuit

## 1. Technical Definition
Electronic circuit that provides regulated power to components within a Data Acquisition Module

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **4.75-5.25 VDC at 2.0 A maximum continuous load**. Failure boundary: **Input voltage exceeds 30 VDC or output voltage drops below 4.5 VDC for &gt;10 ms**, Mechanism: **Semiconductor junction breakdown at 30 V reverse bias voltage, causing thermal runaway in voltage regulator ICs**.

### 2.1 Analytical Physics Model
Governed by the **Joule Heating & Thermal Resistance**:

> **Primary Equation**: $P = I^2 R = \frac{V^2}{R}$  
> **Engineering Impact**: Governs heating element sizing for shrink tunnels/sealers.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| I | Current | Engineering Constant |
| R | Resistance | Engineering Constant |
| V | Voltage | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Input voltage transient exceeding 30 VDC for &gt;1 μs | 8 | Voltage regulator MOSFET avalanche breakdown | TVS diode clamping at 28 V with 600 W peak pulse power rating |
| Ambient temperature exceeding 85°C with &gt;1.5 A load current | 8 | Thermal shutdown activation at 150°C junction temperature | Copper heat sink with 15°C/W thermal resistance and forced air cooling at 2 m/s |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | V | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Voltage Regulator IC](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/voltage-regulator-ic.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pick-and-Place Machine**, **Reflow Oven**, **Automated Optical Inspection System**  
**Downstream Applications**: Data Acquisition Module, Industrial Control System, Test and Measurement Equipment  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What are the key components in a power supply circuit for data acquisition modules?
**A**: The essential components include voltage regulator ICs for stable output, filter capacitors for noise reduction, rectifier diodes for AC to DC conversion, and PCB traces designed for minimal voltage drop and EMI protection.

### Q: How do filter capacitors improve power supply circuit performance?
**A**: Filter capacitors smooth voltage fluctuations, reduce ripple noise, and provide transient response to load changes, ensuring clean power delivery to sensitive data acquisition components for accurate signal measurement.

### Q: What specifications should I consider when selecting a voltage regulator IC?
**A**: Key specifications include input voltage range, output voltage accuracy, current rating, thermal characteristics, efficiency, and protection features like overcurrent and overtemperature shutdown for reliable operation in industrial environments.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - EU LOW VOLTAGE DIRECTIVE 2014/35/EU

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Power Supply Circuit](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/power-supply-circuit)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: POWER_SUPPLY_CIRCUIT | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 88aed460
