- on Audio/Video/Photography
- Published in issue 7/2002 on page 0
Waking to Music
Inexpensive clock radios do not have separate slumber and wake-up volume settings. However, with a small, easily fitted circuit you can go to sleep with quiet music and still be sure of waking up on time. This is achieved without the cumbersome fitting of a second potentiometer. Instead, the circuit boosts the volume level somewhat relative to the set level. For this purpose, the ground lead of the volume pot is opened and a trimpot is inserted.