Amplifier Board
AssemblyThe electronics that amplify the microphone signal to 10–45 W and generate the siren and whistle tones. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Amplifier Board
6 top-level lines as of r104756| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Amplifier IC | megaphone-amp-ic | 1× | 1 | · | part |
| 2 | Volume Potentiometer | megaphone-volume-pot | 1× | 1 | · | part |
| 3 | Siren Circuit | megaphone-siren-circuit | 1× | 1 | · | part |
| 4 | AGC Limiter | megaphone-agc-limiter | 1× | 1 | · | part |
| 5 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 6 | SMD Passive (R/C/L) | smd-passives | 1× | 1 | · | part |