This is a diy kit based on the the NE555 chip, it can train your soldering skills in the assembling process. Once finished it can become a multivibrator output the saure wave support duty cycle adjusting.It is perfect for electronics teaching and experiment.
Working Principle: When power on, the VDD power supply will charge the capacitance C through R1 and R2. When Uc<1/3VDDï¼Œthe module output Vo=1, the discharge tube close. When the capacitance C' voltage Ucâ‰¥2/3VDD, The oscillator output Vo=0, while the discharge tube will turn on,enable the discharge end(DIS) connect the GND, capacitance C dicharge the ground through R2, then the capacitance c's voltage will decrease, when Ucâ‰¤1/3VDD, the oscillator output Vo=1, the discharge tube will close again, enable the discharge end(DIS) do not connect to the GND, the VDD power supply will charge the capacitance C again, enable its voltage Uc increase from 1/3VDD to 2/3VDD, then the the oscillator output Vo=0, just repeat this processs, so enable the output port Vo get the continuously changing Oscillation pulse waveform. The pulse width TLâ‰ˆ0.7R2C is depended on the capacitance C discharging time. TH=0.7(R1+R2)C is depended on the capacitance C charging time, the pulse cycle Tâ‰ˆTH+TL.
Square wave signal generator with LED indicator
The input voltage: DC 5 ~ 12 V Input Current: â‰¥ 100mA, Amplitude Voltage Generator Voltage: 4.2 V to 11.4 V
Frequency: 0.07HZ-2KHZ (also cycle in about 0.45 milliseconds to 15 seconds)
PCB Size: 3.5X4.6cm/1.38X1.81inch(L*W)
Ship out by E-packet with 7-14 business days delivery time usually
Product Information Specifications for Icstation NE555 Adjustable Duty Cycle Frequency Square Wave Pulse Generator Module Board Kits Below:
-DIN(48X48mm) Digital counter
-Range 1 - 999900 with UP/DOWN mode
-EEPROM store data for 10 years
-NPN and PNP input switchable
-Coded switch for set value easily
-Power: AC 110-240V
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