 |
... |
|
 |
Sound-Activated Switch |
|
 |
... |
|
| ... | ||
| The audio from Mic is amplified by Q1. Peaks of signal (adjust by R1) greater than about 0.7 volts trigger the SCR and light lamp I1. | ||
| ... | ||
 |
||
|
... |
|
|
Sound-Activated Switch |
|
|
... |
|
| ... | ||
| The audio from Mic is amplified by Q1. Peaks of signal (adjust by R1) greater than about 0.7 volts trigger the SCR and light lamp I1. | ||
| ... | ||
|
||
