Pulse LED power saving indicator light
Source: InternetPublisher:武林萌主 Keywords: LED indicator light pulse power saving Updated: 2021/01/29
The circuit of pulsed light-emitting diode power- saving indicator
light is shown in Figure 18-3. This indicator light consumes very little electricity. Although the maximum pulse current is about 20mA, the average current is only
about 1mA. The oscillation frequency of the circuit (determined by resistor Ri, capacitor C and power supply voltage) is about 20Hz. At such a high frequency
, the light does not appear to flicker to the naked eye.
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