USB Powered, Stereo PC Multimedia Speaker Circuit Electronic
This circuit is powered by 5V DC source obtainable from the USB port of the Computer. When electrical power switch S1 is turned to “on” position, 5V power supply is extended towards the circuit and power indicator red LED1 illuminates immediately. Resistor R1 is actually a current surge limiter and capacitors C1 and C4 work as buffers.
Are 1/4 W resistors OK?
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