This is a simple Audio Booster Circuit Diagram Project. The amplifier's gain is nominally 20 dB. Its frequency response is determined primarily by the value of just a few components-primarily C1 and R1. The values of the schematic diagram provide a response of ±3.0 dB from about 120 Hz to better than 20,000 Hz.Actually, the frequency response is ruler flat from about 170 Hz to well over 20,000 Hz; it's the low end that deviates from a flat frequency response.
The low end's roll-off is primarily a function of capacitor C1(since RI's resistive value is fixed). If C1's value is changed to 0.1 pF, the low end's comer frequency-the frequency at which the low-end roll-off starts-is reduced to about 70 Hz. If you need an even deeper low-end roll-off, change C1 to a 1.0 pF capacitor; if it's an electrolytic type, make certain that it's installed into the circuit with the correct polarity, with the positive terminal connected to Q1's base terminal.
Audio Booster Circuit Diagram
Audio Booster Circuit Diagram
| Parts | Description |
| P1 | 100K |
| R1 | 47K |
| R2 | 470K |
| R3 | 10K |
| R4 | 560R |
| R5 | 270R |
| C1 | 0.1uF-25v |
| C2 | 3.3uF-25v |
| C3 | 470uF-25V |
| D1 | 5mm. Red Led |
| B1 | 9v Battery |
| J1 | RCA Audio Input Socket |
| J2 | RCA Audio Output Socket |
| S1 | On-Off Switch |
0 comments:
Post a Comment