555 Timer PWM Square wave signal generator 5-15VDC 100 mA
A small compact device that you use to create square waves. Change the frequency of the square wave with potentiometer next to the capacitors and change the duty cycle with the potentiometer next to the red led. You can also change the value of the capacitor with the Yellow jumper pin array, the marking L indicates the highest capacitance of 100uF, the second is 1uF, the third is 0.1uF and the last one with the marking H is 0.001uF or 1nF. Supply voltage to VCC and GND to GND from 5v to 15VDC, the Output pin can go to your device allow with common ground pin GND.
Great little device for testing with oscilloscope and understanding the fundamentals of frequency, duty cycle and calibration.
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