LEDs may be flashed by a variety of circuit configurations. The circuit in Figure 105 uses a 3909 IC, which has been specifically designed for aquot;LED flasheraquot; applications. The flash rate is 1 Hz (60 times per second), and D cells can continuouslyanbsp;...
|Title||:||Electronic circuits cookbook|
|Author||:||Harry L. Helms|
|Publisher||:||Prentice Hall - 1988|