David Clark H3312 Headset Parts List and Electrical Schematic
Model: H3312
Manufacturer: David Clark Company
Parts List
| No. | Description | Part No. |
|---|---|---|
| 1 | Dome, Right | 11353P-24 |
| 2 | Earseal (pair) | 18316G-02 |
| 3 | Dome Filter | 25629P-03 |
| 4 | Screws (10/pk) | 13180P-03 |
| 5 | Earphone Assembly | 10376G-17 |
| 6 | Dome Filter | 26475P-02 |
| 7 | Retaining Ring (10/pk) | 00009M-03 |
| 8 | Headpad Assembly | 10133G-41 |
| 9 | Overhead Cord Kit | 22607G-01 |
| 10 | Dome, Left | 11353P-23 |
| 11 | Comm Cord Assembly Kit | 18028G-11 |
| 12 | Clamp (10/pk) | 24433P-10 |
| 13 | Microphone Bracket Assy Kit | 18317G-02 |
| 14 | Cushion, Mic Shield Assy | 18417G-02 |
| 15 | Mic Shield Filter (1 each) | 24653P-02 |
| 16 | Microphone DC-1A | 12948G-15 |
| 17 | Microphone Shield | 11389P-14 |
| 18 | Microphone Cord Assembly | 18315G-02 |
| 19 | Push-To-Talk Switch | 26619P-29 |
| 20 | Shield Assy with Microphone | 18226G-19 |
| 21 | Dome Stop | 15097P-01 |
| 22 | Headband Spring | 25630P-01 |
| 23 | Stirrup Assembly | 22378G-01 |
| 24 | PCB Assembly | 18289G-13 |
| 25 | Screen, Wind, Mic | 40062G-06 |
Electrical Schematic
The electrical schematic for the David Clark H3312 headset details the internal wiring. The headset features Right Ear, Left Ear, and a Microphone (MIC DC-1A) component, all connected to a main connector with pins labeled 1, 2, and 3.
Component Connections:
- Right Ear: Connected via a Black (BLK) wire to pin 3 and a Green (GRN) wire to pin 2 of the main connector.
- Left Ear: Connected via a Green (GRN) wire to pin 1 of the main connector.
- Microphone (MIC DC-1A): This component is connected using multiple wires: a Green (GRN) wire to pin 1, a Black (BLK) wire to pin 2, a Shield (SHLD) wire also to pin 2, and a Red (RED) wire to pin 3. A White (WHT) wire is also associated with the microphone circuit. The microphone circuit includes a Push-to-Talk switch and is associated with two 22µF capacitors and a 680Ω resistor, suggesting audio signal processing or filtering.
The schematic visually maps these connections, showing the signal paths for audio and control functions.
