Circuit Documentation
Summary
This document provides a detailed overview of a circuit that includes various audio components such as amplifiers, a Bluetooth module, a subwoofer pre-amp board, and speakers. The circuit is designed to amplify audio signals and drive speakers, with power regulation and control components to ensure proper operation.
Component List
Tpa 3110 30W+30W amplifier module
- Pins: Vcc, Gnd, R, L, R-, R+, L-, L+
- Description: 30W+30W stereo amplifier module.
- Purpose: Amplifies audio signals for stereo output.
SUBWOOFER PRE-AMP Board
- Pins: 12 +, 12 -, sub +, L, Gnd, R
- Description: Pre-amplifier board for subwoofer.
- Purpose: Pre-amplifies audio signals for the subwoofer.
Bluetooth module
- Pins: L out, gnd, R out, 5v in +, 5v -
- Description: Bluetooth audio receiver module.
- Purpose: Receives audio signals wirelessly via Bluetooth.
7805
- Pins: Vin, Gnd, Vout
- Description: 5V voltage regulator.
- Purpose: Regulates input voltage to a stable 5V output.
40 Fan 12v
- Pins: +12V, -12V
- Description: 12V cooling fan.
- Purpose: Provides cooling to the circuit components.
Loudspeaker
- Pins: pin1, pin2
- Description: General-purpose loudspeaker.
- Purpose: Outputs audio signals.
8 OHM 20W SPEAKER
- Pins: + speaker, - speaker
- Description: 8-ohm, 20W speaker.
- Purpose: Outputs amplified audio signals.
12v power supply
- Pins: +, -
- Description: 12V DC power supply.
- Purpose: Provides power to the circuit.
LED: Two Pin (red)
- Pins: cathode, anode
- Description: Red LED indicator.
- Purpose: Indicates power status.
Toggle Switch spst
- Pins: L1, COM
- Description: Single-pole single-throw toggle switch.
- Purpose: Controls power to the circuit.
Tpa 3118 60 w mono amplifier module
- Pins: Power +, power -, audio out -, audio out +, audio in -, audio in +, mute
- Description: 60W mono amplifier module.
- Purpose: Amplifies audio signals for mono output.
Wiring Details
Tpa 3110 30W+30W amplifier module
- Vcc: Connected to 12V power supply (+) and Toggle Switch spst (COM).
- Gnd: Connected to 12V power supply (-), SUBWOOFER PRE-AMP Board (12 -), 7805 (Gnd), Tpa 3118 60 w mono amplifier module (power -), Bluetooth module (5v in +), 40 Fan 12v (-12V), and LED: Two Pin (red) (cathode).
- R: Connected to SUBWOOFER PRE-AMP Board (R) and Bluetooth module (R out).
- L: Connected to SUBWOOFER PRE-AMP Board (L) and Bluetooth module (L out).
- R-: Connected to 8 OHM 20W SPEAKER (- speaker).
- R+: Connected to 8 OHM 20W SPEAKER (+ speaker).
- L-: Connected to 8 OHM 20W SPEAKER (- speaker).
- L+: Connected to 8 OHM 20W SPEAKER (+ speaker).
SUBWOOFER PRE-AMP Board
- 12 +: Connected to 12V power supply (+) and Toggle Switch spst (COM).
- 12 -: Connected to 12V power supply (-), 7805 (Gnd), Tpa 3118 60 w mono amplifier module (power -), Bluetooth module (5v in +), Tpa 3110 30W+30W amplifier module (Gnd), 40 Fan 12v (-12V), and LED: Two Pin (red) (cathode).
- sub +: Connected to Tpa 3118 60 w mono amplifier module (audio in -) and (audio in +).
- L: Connected to Bluetooth module (L out) and Tpa 3110 30W+30W amplifier module (L).
- Gnd: Connected to Bluetooth module (gnd) and Tpa 3110 30W+30W amplifier module (Gnd).
- R: Connected to Bluetooth module (R out) and Tpa 3110 30W+30W amplifier module (R).
Bluetooth module
- L out: Connected to SUBWOOFER PRE-AMP Board (L) and Tpa 3110 30W+30W amplifier module (L).
- gnd: Connected to SUBWOOFER PRE-AMP Board (Gnd) and Tpa 3110 30W+30W amplifier module (Gnd).
- R out: Connected to SUBWOOFER PRE-AMP Board (R) and Tpa 3110 30W+30W amplifier module (R).
- 5v in +: Connected to 12V power supply (-), SUBWOOFER PRE-AMP Board (12 -), 7805 (Gnd), Tpa 3118 60 w mono amplifier module (power -), Tpa 3110 30W+30W amplifier module (Gnd), 40 Fan 12v (-12V), and LED: Two Pin (red) (cathode).
- 5v -: Connected to 7805 (Vout), 40 Fan 12v (+12V), and LED: Two Pin (red) (anode).
7805
- Vin: Connected to 12V power supply (+) and Toggle Switch spst (COM).
- Gnd: Connected to 12V power supply (-), SUBWOOFER PRE-AMP Board (12 -), Tpa 3118 60 w mono amplifier module (power -), Bluetooth module (5v in +), Tpa 3110 30W+30W amplifier module (Gnd), 40 Fan 12v (-12V), and LED: Two Pin (red) (cathode).
- Vout: Connected to Bluetooth module (5v -), 40 Fan 12v (+12V), and LED: Two Pin (red) (anode).
40 Fan 12v
- +12V: Connected to 7805 (Vout), Bluetooth module (5v -), and LED: Two Pin (red) (anode).
- -12V: Connected to 12V power supply (-), SUBWOOFER PRE-AMP Board (12 -), 7805 (Gnd), Tpa 3118 60 w mono amplifier module (power -), Bluetooth module (5v in +), Tpa 3110 30W+30W amplifier module (Gnd), and LED: Two Pin (red) (cathode).
Loudspeaker
- pin1: Connected to Tpa 3118 60 w mono amplifier module (audio out -).
- pin2: Connected to Tpa 3118 60 w mono amplifier module (audio out +).
8 OHM 20W SPEAKER
- + speaker: Connected to Tpa 3110 30W+30W amplifier module (R+).
- - speaker: Connected to Tpa 3110 30W+30W amplifier module (R-).
8 OHM 20W SPEAKER
- + speaker: Connected to Tpa 3110 30W+30W amplifier module (L+).
- - speaker: Connected to Tpa 3110 30W+30W amplifier module (L-).
12v power supply
- +: Connected to Toggle Switch spst (COM), SUBWOOFER PRE-AMP Board (12 +), 7805 (Vin), and Tpa 3110 30W+30W amplifier module (Vcc).
- -: Connected to SUBWOOFER PRE-AMP Board (12 -), 7805 (Gnd), Tpa 3118 60 w mono amplifier module (power -), Bluetooth module (5v in +), Tpa 3110 30W+30W amplifier module (Gnd), 40 Fan 12v (-12V), and LED: Two Pin (red) (cathode).
LED: Two Pin (red)
- cathode: Connected to 12V power supply (-), SUBWOOFER PRE-AMP Board (12 -), 7805 (Gnd), Tpa 3118 60 w mono amplifier module (power -), Bluetooth module (5v in +), Tpa 3110 30W